Chapter 14 Configuring Resilient Packet Ring on the ML-Series Card

Configuring RPR

 

Command

Purpose

Step 5

 

 

Router(config-if)# carrier-delay msec

(Optional) Sets the carrier delay time. The default setting

 

milliseconds

is 200 milliseconds, which is optimum for SONET

 

 

protected circuits.

 

 

Note If the carrier delay time is changed from the

 

 

default, the new carrier delay time must be

 

 

configured on all the ML-Series card interfaces.

Step 6

 

 

Router(config-if)# [no] spr

(Optional) Specifies the RPR load-balancing scheme for

 

load-balance { auto port-based }

unicast packets. The port-basedload balancing option

 

 

maps even ports to the POS 0 interface and odd ports to

 

 

the POS 1 interface. The default auto option balances the

 

 

load based on the MAC addresses or source and

 

 

destination addresses of the IP packet.

Step 7

 

 

Router(config-if)# end

Exits to privileged EXEC mode.

Step 8

 

 

Router# copy running-config

(Optional) Saves configuration changes to NVRAM.

 

startup-config

 

 

 

 

Assigning the ML-Series Card POS Ports to the SPR Interface

Caution The SPR interface is the routed interface. Do not enable Layer 3 addresses or assign bridge groups on the POS interfaces assigned to the SPR interface.

Caution When traffic coming in on an SPR interface needs to be policed, the same input service policy needs to be applied to both POS ports that are part of the SPR interface.

The POS ports require LEX encapsulation to be used in RPR. The first step of RPR configuration is to set the encapsulation of POS 0 and POS 1 ports to LEX.

Each of the ML-Series card’s two POS ports must also be assigned to the SPR interface. To configure LEX encapsulation and assign the POS interfaces on the ML-Series card to the SPR, perform the following procedure, beginning in global configuration mode:

 

Command

Purpose

Step 1

 

 

Router(config)# interface pos 0

Enters the interface configuration mode to configure the

 

 

first POS interface that you want to assign to the SPR.

Step 2

 

 

Router(config-if)# encapsulation lex

Sets POS interface encapsulation as LEX (default). RPR

 

 

on the ML-Series card requires LEX encapsulation.

Step 3 (

 

 

Router(config-if)# spr-intf-id

Assigns the POS interface to the SPR interface. The

 

shared-packet-ring-number

shared packet ring number must be 1, which is the only

 

 

shared packet ring number that you can assign to the SPR

 

 

interface.

 

 

 

 

 

Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration Guide R8.5

 

 

 

 

 

 

78-18133-01

 

 

14-11

 

 

 

 

 

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Cisco Systems 15310-CL, 15310-MA manual Assigning the ML-Series Card POS Ports to the SPR Interface, 14-11
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15310-CL, 15310-MA specifications

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