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Configuring the Cisco uBR10012 OC-48 DPT/POS Interface Module with PRE1 and PRE2 Performance Routing Engines

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Table Of Contents

Configuring the Cisco uBR10012 OC-48 DPT/POS Interface Module

Contents

Prerequisites for Configuring the Cisco uBR10012 OC-48 DPT/POS Interface Module

Restrictions for Configuring the Cisco uBR10012 OC-48 DPT/POS Interface Module

Information About the Cisco OC-48 DPT⁄POS Interface Module

Faceplate and LED Features

How to Configure the Cisco OC-48 DPT⁄POS Interface Module

Preconfiguring the Slots for the Cisco OC-48 DPT⁄POS Interface Module

Examples

Configuring POS Interfaces on the Cisco OC-48 DPT⁄POS Interface Module

Default Values in POS Mode for the Cisco OC-48 DPT⁄POS Interface Module

Configuring the Cisco OC-48 DPT⁄POS Interface Modules for POS

Examples

Configuring SRP Interfaces on the Cisco OC-48 DPT⁄POS Interface Module

Default Values in SRP Mode for the Cisco OC-48 DPT⁄POS Interface Module

Configuring the Cisco OC-48 DPT⁄POS Interface Modules for SRP

Configuring the Interface to Support SRP

Configuring the SRP IPS Command Options

Examples

Configuring SDCC Interfaces on the Cisco OC-48 DPT⁄POS Interface Module

Additional References

Related Documents

Standards

MIBs

RFCs

Technical Assistance

Command Reference

card

crc

hold-queue

hw-module slot pos

hw-module slot srp

loopback

mtu

pos flag

pos framing

pos report

pos scramble-atm

pos threshold

sdcc enable

show controllers cable

show controller pos

show controllers sdcc

show controllers srp

show diag

show interface pos

show interface sdcc

show interface srp

show protocols

show running-config

show srp

show srp ips

show srp rate-limit

show srp topology

show version

srp clock-source

srp flag

srp framing

srp ips request forced-switch

srp ips request manual-switch

srp ips timer

srp ips wts-timer

srp loopback

srp priority-map

srp shutdown

srp topology-timer

srp TX-traffic-rate

Cisco OC-48 DPT⁄POS Interface Module System Messages

C10KSDCC

C10K_APS

GRP_C10K_SRP

GRP_OC48SRPPOS

POS

PXF

RIM


Configuring the Cisco uBR10012 OC-48 DPT/POS Interface Module

OL-3551-03
Product Part Numbers: UBR10-SRP-OC48SMS, UBR10-SRP-OC48SML, ESR10C48/P/SRPSMS, ESR10C48/P/SRPSML
October, 2004

This document describes procedures and Cisco IOS commands for configuring and monitoring the Cisco OC-48 DPT⁄POS interface module on the Cisco uBR10012 router.

The Cisco OC-48 DPT⁄POS interface module is a dual-mode module, providing interface support for Packet over SONET (POS) or Spatial Reuse Protocol (SRP).

Note The Cisco OC-48 DPT⁄POS interface module supports SONET Section Data Communications Channel (SDCC) in either POS or SRP modes.

•Packet-over-SONET (POS) technology is ideally suited for Internet and IP networks, because it provides superior bandwidth utilization efficiency over other transport methods. POS can support a single connection or redundant connections to provide a robust, high-speed, high-throughput transport for IP traffic.

•Spatial Reuse Protocol (SRP) is the media-independent Media Access Control (MAC)-layer protocol that enables Cisco Dynamic Packet Transport (DPT) functionality in ring configurations. The SRP MAC protocol provides the base functionality for addressing, packet stripping, bandwidth control, and control message propagation on the packet ring.

Release
Modification

12.2(11)BC3

Support for the Cisco OC-48 DPT⁄POS interface module introduced on the Cisco uBR10012 universal broadband router with Performance Routing Engine (PRE1).

12.3(9a)BC

Support for the Cisco OC-48 DPT⁄POS interface module introduced on the Cisco uBR10012 universal broadband router with PRE2, the latest in Route Processor availability.


Feature History for Cisco OC-48 DPT⁄POS Interface Module

Finding Support Information for Platforms and Cisco IOS Software Images

Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image support. Access Cisco Feature Navigator at http://www.cisco.com/go/fn. You must have an account on Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear.

Contents

•Prerequisites for Configuring the Cisco uBR10012 OC-48 DPT/POS Interface Module

•Restrictions for Configuring the Cisco uBR10012 OC-48 DPT/POS Interface Module

•Information About the Cisco OC-48 DPT⁄POS Interface Module

•How to Configure the Cisco OC-48 DPT⁄POS Interface Module

•Additional References

•Command Reference

•Cisco OC-48 DPT⁄POS Interface Module System Messages

Note For additional release information, refer to the Cisco uBR10012 Universal Broadband Router Release Notes web page on CCO (or refer to the alternate Cisco IOS Release 12.2 BC web page on Cisco.com).

Prerequisites for Configuring the Cisco uBR10012 OC-48 DPT/POS Interface Module

The Cisco uBR10012 router should be operational before beginning the configuration procedures in this document. The configuration of the Cisco OC-48 DPT⁄POS interface module requires that the following conditions be met:

•The Cisco uBR10012 router must be running Cisco IOS release 12.2(11)BC3 or a later release to support the Cisco OC-48 DPT⁄POS interface module.

•The Cisco uBR10012 router must be using one or two PRE1 or PRE2 processor modules to support the Cisco OC-48 DPT⁄POS interface module. The original PRE module for the Cisco uBR10012 router is not supportedwith the Cisco OC-48 DPT⁄POS interface module.

•At least one Timing, Communication, and Control Plus (TCC+) card must be installed and operational in the Cisco uBR10012 router.

•Complete a basic configuration of the Cisco uBR10012 router; this includes, at a minimum, the following tasks:

–Configure a host name and password for the router.

–Configure the router to support Internet Protocol (IP) operations.

–Install and configure at least one WAN adapter to provide backbone connectivity.

–Install at least one Cisco OC-48 DPT⁄POS interface module in an appropriate slot of the Cisco uBR10012 chassis. This is described in the online document, Cisco uBR10012 OC-48 DPT/POS Interface Module:

http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr10k/ubr10012/frus/ub_oc48.htm

–Bring up the router as described in the "Configuring the Cable Modem Termination System for the First Time" chapter in the Cisco uBR10012 Universal Broadband Router Software Configuration Guide:

http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr10k/ubr10012/scg/u10k_cf.htm

•Determine a channel plan for your Cisco uBR10012 router and all of its cable interfaces.

•Verify that your headend site includes all necessary servers to support DOCSIS and Internet connectivity, including Dynamic Host Configuration Protocol (DHCP), Time-of-Day (ToD) and Trivial File Transfer Protocol (TFTP) servers.

Restrictions for Configuring the Cisco uBR10012 OC-48 DPT/POS Interface Module

The following operational considerations apply to the Cisco OC-48 DPT⁄POS interface module:

•Command-line interface (CLI) configuration commands are synchronized only with the standby Performance Routing Engine (PRE) module. Any configuration that is done with SNMP commands is not synchronized with the standby PRE module, and is not present after a switchover.

•In POS mode, the Cisco OC-48 DPT⁄POS interface module may be installed as a single- or dual- mode interface module. Only one card is required when operating in POS mode.

•In SRP mode, the Cisco OC-48 DPT⁄POS interface module cannot be installed as a single interface module. You must configure the OC-48 DPT⁄POS interface modules in pairs using adjacent slots (slots 1/0/0 and 2/0/0 together, or slots 3/0/0 and 4/0/0 together). You can also configure four interface modules as two pairs.

•For either POS or SRP mode, slot preconfiguration is required prior to configuring additional settings. Refer to the "Preconfiguring the Slots for the Cisco OC-48 DPT⁄POS Interface Module" section.

Information About the Cisco OC-48 DPT⁄POS Interface Module

•Faceplate and LED Features

Faceplate and LED Features

The Cisco OC-48 DPT⁄POS interface module has a pair of OC-48c, fiber-optic standard connector (SC) duplex ports that provide an SC connection for either the single-mode short-reach or single-mode long-reach version. Figure 1 shows the faceplate and LED features of the Cisco OC-48 DPT⁄POS interface module.

Figure 1 Cisco OC-48 DPT Interface Module Faceplate

Table 1 LED Status and Description

LED
Status
Description

FAIL

Yellow
Off

Line card is disabled.
Line card is operational.

ENABLE

Green
Off

Port is enabled.
Port is disabled.

POS

Green
Off

Operating in POS mode.
Not operating in POS mode.

SRP

Green
Off

Operating in SRP mode.
Not operating in SRP mode.

CD

Green
Off

Carrier detected.
No carrier detected.

TX

Green
Off

Packets transported
No packets transported

RX

Green
Off

Packets received.
No packets received.

SYNC

Green
Off

Card synchronized to mate card.
Card not synchronized.

WRAP

Yellow
Off

Interface is wrapped.
Interface not wrapped.

PASS THRU

Yellow
Off

DPT port line is in a pass-through state.
DPT port line not in pass-through state.


How to Configure the Cisco OC-48 DPT⁄POS Interface Module

This section contains the following procedures:

•Preconfiguring the Slots for the Cisco OC-48 DPT⁄POS Interface Module

•Configuring POS Interfaces on the Cisco OC-48 DPT⁄POS Interface Module

•Configuring SRP Interfaces on the Cisco OC-48 DPT⁄POS Interface Module

•Configuring SDCC Interfaces on the Cisco OC-48 DPT⁄POS Interface Module

Preconfiguring the Slots for the Cisco OC-48 DPT⁄POS Interface Module

This section includes the following required and optional subsections:

•SUMMARY STEPS

•DETAILED STEPS

•Examples

You must issue the hw-module slot x { pos | srp } and card commands to assign the supported mode to the interface module pairs and to preconfigure the slots to which the interface module pairs are assigned. Perform this preconfiguration prior to any additional POS or SRP mode configurations. Refer to the Cisco Broadband Cable Command Reference Guide for additional command syntax information that applies to additional field-replaceable units (FRUs).

Tip When a card has been preprovisioned and is not physically present in the chassis, the show interface command for the corresponding slot displays the message "Hardware is not present." Some show commands might also list the preprovisioned line card in their displays.

Perform the following steps to preconfigure the Cisco OC-48 DPT⁄POS interface module slots to support POS or SRP.

SUMMARY STEPS

1. enable

2. config t

3. hw-module slot x { pos | srp }

4. card slot/port {1oc48dpt-pos-1}

5. copy running-config startup-config

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable

Enables privileged EXEC mode.

•Enter your password if prompted.

Step 2 

configure terminal

Example:

Router# configure terminal

Enters global configuration mode and specifies that the console terminal will be the source of the configuration commands.

Step 3 

hw-module slot slot-number { pos | srp }

no hw-module slot x { pos | srp }

Example:

Router# hw-module slot 3 pos

Assigns the mode of operation to the interfaces. To change the mode of operation for the pairs of interface modules, first issue the no form of this command prior to setting it to the new mode.

Refer to the hw-module slot pos command topic for additional command reference information.

Note The hw-module slot x pos command must be issued for each interface module you want to set into POS mode. Dual-interface modules are not required for POS.

Note The hw-module slot x srp command need be issued only on the odd slot of the pair.

Step 4 

card slot/port {1oc48dpt-pos-1}

Example:

Router# card 3/0 1oc48dpt/pos-1

Preprovisions a slot in the Cisco uBR10012 router for a particular interface module. To remove the preprovisioning for a card, so that the physical slot reports being empty, use the no form of this command.

Note Two adjacent slots must be preprovisioned to support a pair of OC-48 DPT/POS interface modules.

Refer to the card command topic for additional command reference information.

Step 5 

copy running-config startup-config

Example: 
Router# copy running-config 
startup-config

[OK]

Router#

Writes the new configuration to nonvolatile random access memory (NVRAM).

The system displays an OK message when the configuration has been stored.

Note The card command allows system administrators to plan for future configurations, without having to wait for the physical hardware to first arrive. When the line card does arrive, the installer can bring the card online by inserting the card into the chassis and connecting the necessary cables, without having to do any further configuration using the command-line interface.

Note The type of card must be appropriate for the slot being specified. Note that 1choc12-1, 1oc12atm-1, and 6cht3-1 line cards are not supported on the Cisco uBR10012 router.

Examples

This section provides the following out put examples:

•POS Interface Preprovision Example with card Command

•POS Interface Preprovision Examples with show interface pos Command

•SRP Interface Preprovision Example with show interface srp Command

POS Interface Preprovision Example with card Command

The following example shows a list of supported card types for Cisco IOS 12.3(9a)BC, and then shows that slot 3/0/0 is being preprovisioned for a Cisco uBR-LCP2-MC28C cable interface line card. The POS interface for slot 3/0/0 can then be configured. 

Router(config)# card 3/0 ?


  1cable-mc14c       create a uBR10000 line card with MC14C

  1cable-mc16c       create a uBR10000 line card with MC16C

  1cable-mc16e       create a uBR10000 line card with MC16E

  1cable-mc16s       create a uBR10000 line card with MC16S

  1choc12-1          create a CHOC12_1_PORT cardtype

  1gigethernet-1     create a GE_1_PORT cardtype

  1oc12atm-1         create a OC12ATM_1_PORT cardtype

  1oc12pos-1         create a OC12POS_1_PORT cardtype

  1oc48dpt-pos-1     create a uBR10000 oc48 SRP/POS card

  2cable-mc26bnc     create a uBR10000 line card with MC26C, BNC connector

  2cable-mc26c       create a uBR10000 line card with MC26C

  2cable-mc28bnc     create a uBR10000 line card with MC28C, BNC connector

  2cable-mc28c       create a uBR10000 line card with MC28C

  2cable-tccplus     Utility Card

  2oc12srp-mm        create a uBR10000 oc12 SRP card with MM

  2oc12srp-sm-ir     create a uBR10000 oc12 SRP card with SM IR

  2oc12srp-sm-lr     create a uBR10000 oc12 SRP card with SM LR

  2oc12srp-sm-xr     create a uBR10000 oc12 SRP card with SM XR

  5cable-mc520s      create a uBR10000 line card with MC520S

  5cable-mc520s-bnc  create a uBR10000 line card with MC520S-BNC

  5cable-mc520s-d    create a uBR10000 line card with MC520S-D

  6cht3-1            create a CT3_6_PORT cardtype

  ubr10k-clc-5x20s   create a uBR10000 line card with MC520S


Router(config)# card 3/0 1oc48dpt-pos-1

POS Interface Preprovision Examples with show interface pos Command

The following example shows the output from the show interface command for a preprovisioned POS interface in slot 1. The second line of the output shows hardware status.

Note When using the show interface pos or show interface srp commands to display information about the interface, be aware that the byte counters used for these commands are 32-bit counters with a maximum size of approximately 4.3 billion. These counters could wrap back to 0 if the Cisco OC-48 DPT⁄POS interface module is passing large amounts of traffic. 

Router# show interface POS 1/0/0


POS1/0/0 is administratively down, line protocol is down

POS2/0/0 is reset, line protocol is down 

  Hardware is not present

  Hardware is Skystone 4402 Sonet Framer

  MTU 4470 bytes, BW 622000 Kbit, DLY 100 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation HDLC, crc 32, loopback not set

  Keepalive set (10 sec)

  Scramble disabled

  Last input never, output never, output hang never

  Last clearing of "show interface" counters 10:12:57

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue :0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     0 packets output, 0 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions

The following output displays system information when the OC-48 DPT⁄POS interface module has been inserted and configured in slot 4: 

Router# show interface pos 4/0/0


POS4/0/0 is up, line protocol is up

  Hardware is Skystone 4402 Sonet Framer

  Internet address is 20.0.0.2/8

  MTU 4470 bytes, BW 2488000 Kbit, DLY 100 usec,

     reliability 255/255, txload 23/255, rxload 23/255

  Encapsulation HDLC, crc 32, loopback not set

  Keepalive not set

  Scramble disabled

  Last input never, output never, output hang never

  Last clearing of "show interface" counters 10:08:58

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue :0/40 (size/max)

  10 minute input rate 233831000 bits/sec, 235702 packets/sec

  10 minute output rate 233831000 bits/sec, 235702 packets/sec

     4281192169 packets input, 2586851424 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     4281192797 packets output, 2587060701 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions

Router#

SRP Interface Preprovision Example with show interface srp Command

The following example shows the output from the show interface srp command for a preprovisioned SRP interface module in slot 1/0/0: 

Router# show interface s1/0/0


SRP1/0/0 is administratively down, line protocol is down 

  Hardware is SRP over SONET, address is 0000.0048.2222 (bia 0005.00e1.44c0)

  Internet address is 48.1.1.2/24

  MTU 4470 bytes, BW 2488000 Kbit, DLY 100 usec, 

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation SRP2,

  Side A: loopback not set

  Side B: loopback not set

     3 nodes on the ring   MAC passthrough set   <== Passthrough mode

     Side A: not wrapped   IPS local: IDLE       IPS remote: IDLE

     Side B: not wrapped   IPS local: IDLE       IPS remote: IDLE

  Last input 00:00:12, output 00:00:12, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue :0/40 (size/max)

  Side A: 30 seconds output rate 0 bits/sec, 0 packets/sec

          30 seconds input rate 0 bits/sec, 0 packets/sec

  Side B: 30 seconds output rate 0 bits/sec, 0 packets/sec

          30 seconds input rate 0 bits/sec, 0 packets/sec

     51469 packets input, 2182080 bytes, 0 no buffer

     Received 0 broadcasts, 2 runts, 0 giants, 0 throttles

     5 input errors, 0 CRC, 0 frame, 0 overrun, 3 ignored, 0 abort

     56834 packets output, 3981898 bytes, 0 underruns

     0 output errors, 0 collisions, 5 interface resets

     0 output buffer failures, 0 output buffers swapped out

     Side A received errors:

        4 input errors, 0 CRC, 3 ignored,

        1 framer runts, 0 framer giants, 0 framer aborts,

        0 mac runts, 0 mac giants, 0 mac aborts

     Side B received errors:

        1 input errors, 0 CRC, 0 ignored,

        1 framer runts, 0 framer giants, 0 framer aborts,

        0 mac runts, 0 mac giants, 0 mac aborts

Configuring POS Interfaces on the Cisco OC-48 DPT⁄POS Interface Module

This section provides procedures and configuration examples to configure the Cisco OC-48 DPT⁄POS interface module. The command-line interface (CLI) allows you to configure and display parameters for both the DPT and the SONET/SDH framer.

This section contains the following required and optional subsections:

•Default Values in POS Mode for the Cisco OC-48 DPT⁄POS Interface Module (optional)

•Configuring the Cisco OC-48 DPT⁄POS Interface Modules for POS (required)

•SUMMARY STEPS (required)

•DETAILED STEPS (required)

•Examples (optional)

Default Values in POS Mode for the Cisco OC-48 DPT⁄POS Interface Module

Table 2 lists default values for the Cisco OC-48 DPT⁄POS interface module in POS mode. The table includes the command used for modifying a default value and indicates whether a value needs to be the same (or opposite) on the remote end of the connection.

For additional command information, refer to additional POS topics in this document and to the Cisco Broadband Cable Command Reference Guide on CCO (or to the alternate location on Cisco.com).

Table 2 OC-48 POS Line Card SONET Defaults

Parameter
Configuration Command Syntax
Default Setting

flag

pos flag [ c2 | j0 | s1s0]

J0 -1, C2- 0xCF, s1s0- 0

framing

pos framing [sonet | sdh]

sonet

report

pos report [all | b1-tca | b2-tca | b3-tca | lais | lrdi | pais | plop | prdi | sd-ber | sf-ber | slof | slos ]

SF SLOS SLOF B1-TCA B2-TCA PLOP B3-TCA

threshold

pos threshold [b1-tca | b2-tca | b3-tca | sd-ber | sf-ber ]

b1-tca, b2-tca and b3-tca: 6
sd-ber: 6 sf-ber: 3

scramble-atm

[no] pos scramble-atm

No scrambling

crc

crc [16 | 32]

32

encapsulation

encapsulation [ hdlc | ppp]

hdlc

clock source

clock source [ line | internal ]

line

keepalive

keepalive period

10


Configuring the Cisco OC-48 DPT⁄POS Interface Modules for POS

The following procedure is for creating a basic configuration, enabling a POS interface, and specifying IP routing. You might also need to enter other configuration commands, depending on the requirements of your system configuration.

A Cisco uBR10012 router identifies a POS interface address by its line-card slot number and port number, in the format slot/subslot/port. For example, the slot/subslot/port address of an POS interface on a Cisco OC-48 DPT⁄POS interface module installed in line card slot 3, subslot 0 and port 0 is 3/0/0.

Perform the following steps to initially configure two Cisco OC-48 DPT⁄POS interface modules in slot 3 and slot 4 of a Cisco uBR10012 router.

SUMMARY STEPS

1. enable

2. configure terminal

3. hw-module slot number pos

4. ip routing

5. interface pos slot/subslot/port

6. ip address ip-address mask

7. clock source {internal | line}

8. no cdp enable

9. pos flag { c2 value | j0 value | s1s0 }

10. pos framing { sonet | sdh }

11. pos report option

12. pos scramble-atm

13. pos threshold options

14. Ctrl+Z

15. copy running-config startup-config

16. show interface pos slot/subslot/port

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable

Enables privileged EXEC mode.

•Enter your password if prompted.

Step 2 

configure terminal

Example:

Router# configure terminal

Enters global configuration mode and specifies that the console terminal will be the source of the configuration commands.

Step 3 

hw-module slot number pos

Example:

Router(config)# hw-module slot 3 pos

Router(config)# end

Brings up each Cisco OC-48 DPT⁄POS interface module.

Note The hw-module slot x pos command must be issued for each interface module you want to set into POS mode.

Note Dual interface modules are not required for POS.

Refer to the hw-module slot pos command reference topic for additional command syntax information.

Step 4 

ip routing

Example:

Router# ip routing

Enable IP routing by entering the ip routing command in global configuration mode.

Step 5 

interface pos slot/subslot/port

Example: 
Router(config)# interface pos 3/0/0

Router(config-if)#

At the prompt, specify the new interface to configure by entering the interface command, followed by the type (pos), and slot/subslot/port (slot number/subslot number/port number).

Step 6 

ip address ip-address mask

Example: 
Router(config-if)# ip address 10.0.0.1 
255.255.255.0

Router(config-if)#

Assigns an IP address and subnet mask to the POS interface.

Step 7 

clock source {internal | line}

Example: 
Router(config)# interface pos 1/0/0

Router(config-if)# clock source line

Verify that the default value for the clock source is correct. At the prompt, set the internal or line clock source by using the clock source command.

The default is clock source internal.

Step 8 

no cdp enable

Example: 
Router(config-if)# no cdp enable

Turns off the Cisco Discovery Protocol (CDP) in interface configuration mode.

Note Cisco uBR10012 routers do not require CDP.

Step 9 

pos flag { c2 value | j0 value | s1s0 }

Example:

Router(config)# interface pos 5/0/0

Router(config-if)# pos flag c2 0xCF


To select the POS flag, enter the pos flag options interface configuration command with the desired command options. This command is typically used to meet a standards requirement or to ensure interoperability with another vendor's equipment.

For additional command syntax information, refer to the pos flag command reference section.

Step 10 

pos framing { sonet | sdh }

Example: 
Router(config-if)# pos framing sonet

To select framing, enter the pos framing interface configuration command.

For additional command syntax information, refer to the pos framing command reference section.

Step 11 

pos report option

Example: 
Router1(config-if)# pos report all

To select a POS alarm report, enter the pos report option interface configuration command.

For additional command syntax information, refer to the
pos report command reference section.

Step 12 

pos scramble-atm

Example:

Router(config)# interface pos 5/0/0

Router(config-if)# pos scramble-atm


Set the line card to scramble the POS synchronous payload envelope (SPE) using the pos scramble-atm command. SONET payload scrambling applies a self-synchronous scrambler to the SPE of the interface to ensure sufficient bit transition density. The default is no POS SPE scrambling. Use the no form of the command to disable scrambling.

For additional command syntax information, refer to the
pos scramble-atm command reference section.

Step 13 

pos threshold options

Example: 
Router(config-if)# pos threshold b1-tca 
sf-ber 3

To select POS alarm thresholds, enter the pos threshold interface configuration command.

Note Default values follow:

•6 for b1-tca, b2-tca, b3-tca, and sd-ber

•3 for sf-ber

Step 14 

Ctrl-Z

Example: 
Router(config-if)# Ctrl-Z

When you have included all of the configuration commands to complete the configuration, press Ctrl-Z (press the Control key while you press Z) to exit configuration mode.

Step 15 

copy running-config startup-config

Example: 
Router# copy running-config startup-config

[OK]

Router#

Writes the new configuration to nonvolatile random access memory (NVRAM).

The system displays an OK message when the configuration has been stored.

Step 16 

show interface pos slot/subslot/port

Example: 
Router# show interface pos 3/0/0

POS3/0/0 is up, line protocol is up

.

.

.

Use the show interface pos slot/subslot/port command to monitor stages of the Cisco IOS download to the line cards.

For additional command information, refer to the
show interface pos command reference section.

Note When the Cisco IOS software is successfully downloaded, the LED status on the interface module faceplate is "IOS RUN."

Examples

This section provides the following output examples:

•Cisco OC-48 DPT⁄POS Interface Module POS Configuration Example

Cisco OC-48 DPT⁄POS Interface Module POS Configuration Example

Use the show interface pos slot/subslot/port command to display the status of the POS requests.

Note When using the show interface pos or show interface srp commands to display information about the interface, be aware that the byte counters used for these commands are 32-bit counters with a maximum size of approximately 4.3 billion. These counters could wrap back to 0 if the Cisco OC-48 DPT⁄POS interface module is passing large amounts of traffic. 

Router# show interface pos 3/0/0


POS3/0/0 is up, line protocol is up

  Hardware is Skystone 4402 Sonet Framer

  Internet address is 50.0.0.2/8

  MTU 4470 bytes, BW 2488000 Kbit, DLY 100 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation HDLC, crc 32, loopback not set

  Keepalive not set

  Scramble disabled

  Last input 00:00:32, output never, output hang never

  Last clearing of "show interface" counters 12:04:52

  Input queue: 0/0/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue :0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     725 packets input, 247950 bytes, 0 no buffer

     Received 725 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     733 packets output, 247717 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions

Configuring SRP Interfaces on the Cisco OC-48 DPT⁄POS Interface Module

This section provides procedures and configuration examples to configure the Cisco OC-48 DPT⁄POS interface module. The command-line interface (CLI) is provided to configure and display parameters for both the DPT and the SONET/SDH framer.

This section contains the following procedures:

•Default Values in SRP Mode for the Cisco OC-48 DPT⁄POS Interface Module

•Configuring the Cisco OC-48 DPT⁄POS Interface Modules for SRP

•Configuring the Interface to Support SRP

•Configuring the SRP IPS Command Options

•Examples

Default Values in SRP Mode for the Cisco OC-48 DPT⁄POS Interface Module

Table 3 lists default values for the Cisco OC-48 DPT⁄POS interface module in SRP mode. The table includes the command used for modifying a default value and indicates whether a value needs to be the same (or opposite) on the remote end of the connection.

For additional command information, refer to additional POS topics in this document and to the Cisco Broadband Cable Command Reference Guide on CCO (or to the alternate location on Cisco.com.

Table 3 Cisco OC-48 DPT⁄POS Interface Module Configuration Default Values for SRP Mode 

Parameter
Configuration Command
Default Value

Cisco Discovery Protocol (CDP)

[no] cdp enable

cdp enable

Framing

srp framing {sdh | sonet} [a | b]

SONET OC-48c

Bandwidth

[no] bandwidth Gbps

2.5 Gbps

SONET overhead

srp flag {c2 | j0 | s1s0} value [a | b]

c2 set to 0x16;
j0 set to 0xCC;
s1s0 set to 0

Clock source

srp clock-source {internal | line} [a | b]

Internal SRP clock source.


Configuring the Cisco OC-48 DPT⁄POS Interface Modules for SRP

The following procedure is for creating a basic configuration, enabling an SRP interface, and specifying IP routing. You might also need to enter other configuration commands depending on the requirements of your system configuration.

The Cisco uBR10012 router identifies an SRP interface address by its line-card slot number and port number, in the format slot/port. For example, the slot/port address of an SRP interface on a Cisco OC-48 DPT⁄POS interface module installed in line card slot 3, subslot 0 and port 0 is 3/0/0.

Note Both Cisco OC-48 DPT⁄POS interface modules in the pair must be configured to support SRP. You must execute the hw-module slot n srp command in privileged EXEC mode to enable the paired modules. Refer to the "Preconfiguring the Slots for the Cisco OC-48 DPT⁄POS Interface Module" section.

When two Cisco OC-48 POS/DPT interface modules are to be configured for SRP mode, they must be inserted in slot pairs (1 and 2) or (3 and 4). The line cards are referenced as side A and side B. One interface exists for the two line cards and the layer. The SRP protocol determines which line card on which the interface transmits data, and this is dependent upon the ring topology. The interface resides on the lower slot of the SRP line card pair. Therefore, all configuration commands are referenced using the lower slot number.

Note Side A is automatically the left-most (odd-numbered) slot of the pair of Cisco OC-48 DPT⁄POS interface modules. The SRP interface cannot reside on an even-numbered slot number.

Perform the following steps to configure two Cisco OC-48 DPT⁄POS interface modules in slot 3 and slot 4 of a Cisco uBR10012 router for the first time.

SUMMARY STEPS

1. enable

2. configure terminal

3. hw-module slot slot-number srp

4. end

5. copy running-config startup-config

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable


Enables privileged EXEC mode.

•Enter your password if prompted.

Step 2 

configure terminal

Example:

Router# configure terminal


Enters global configuration mode and specifies that the console terminal will be the source of the configuration commands.

Step 3 

hw-module slot slot-number srp

no hw-module slot x srp

Example:

Router(config)# hw-module slot 3 srp



Assigns the mode of operation to the interfaces. To change the mode of operation for the pairs of interface modules, first issue the no form of this command prior to setting it to the new mode (srp).

Note The hw-module slot x srp command need be issued only on the odd slot of the pair.

For additional command syntax information, refer to the
hw-module slot srp command reference section.

Step 4 

end

Example:

Router(config)# end

Router#


Returns you to privileged EXEC mode.

Step 5 

copy running-config startup-config

Example:

Router# copy running-config startup-config

[OK]

Router#

Writes the new configuration to nonvolatile random access memory (NVRAM). The system displays an OK message when the configuration has been stored.

Configuring the Interface to Support SRP

The following procedure is for creating a basic configuration—enabling an interface and specifying IP routing. You might also need to enter other configuration commands, depending on the requirements of your system configuration.

A Cisco uBR10012 router identifies an interface address by its line-card slot number and port number, in the format slot/port. For example, the slot/port address of an interface on a Cisco OC-48 DPT⁄POS interface module installed in line card slot 1 and chassis port 0 is 1/0. Even though the card contains only one port, you must use the slot/port notation.

Use the configure terminal command to enter the configuration mode if you want to change the default configuration values on the Cisco OC-48 DPT⁄POS interface module. Be prepared with the information you will need, such as the IP address (see Table 3).

Use the following procedure to configure the Cisco OC-48 DPT⁄POS interface module. Press the Return key after each configuration step, unless otherwise noted.

SUMMARY STEPS

1. enable

2. show version

3. show interface srp slot/subslot/port

4. configure terminal

5. ip routing

6. interface srp slot/subslot/port

7. ip address ip-address mask

8. srp clock-source line n

9. no cdp enable

10. srp framing

11. srp topology-timer

12. srp tx-traffic-rate

13. srp priority-map transmit

14. srp priority-map transmit value

15. Additional interface configurations, as required

16. Ctrl-Z

17. copy running-config startup-config

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

enable

Example:

Router> enable


Enables privileged EXEC mode.

•Enter your password if prompted.

Step 2 

show version

Example:

Router# show version


Confirms that the system recognizes the cards. For sample output, refer to the show version command reference section.

Step 3 

show interface srp slot/subslot/port

Example:

Ro