Alcatel-Lucent 7750 SR Manual page 1337

Os services guide

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For dynamic hosts, the subscriber identification string must be derived from the DHCP ACK message

sent to the subscriber host. The default value for the string is the content of Option 82 CIRCUIT-ID

and REMOTE-ID fields interpreted as an octet string. As an option, the DHCP ACK message may be

processed by a subscriber identification policy which has the capability to parse the message into an

alternative ASCII or octet string value.

When multiple hosts on the same port are associated with the same subscriber identification string

they are considered to be host members of the same subscriber.

The no form of the command removes the default subscriber identifcation policy from the SAP

configuration.

no sub-ident-policy

sub-ident-policy-name — Specifies a subscriber identification policy for this SAP. The subscriber

[no] srrp srrp-id

config>service>vprn>sub-if>grp-if

This command creates an SRRP instance on a group IP interface. An SRRP instance manages all

subscriber subnets within the group interfaces subscriber IP interface or other subscriber IP interfaces

that are associated through a wholesale/retail relationship. Only one unique SRRP instance can be

configured per group interface.

The no form of the command removes an SRRP instance from a group IP interface. Once removed,

the group interface ignores ARP requests for the SRRP gateway IP addresses that may exist on

subscriber subnets associated with the group IP interface. Then the group interface stops routing

using the redundant IP interface associated with the group IP interface and will stop routing with the

SRRP gateway MAC address. Ingress packets destined to the SRRP gateway MAC will also be

silently discarded. This is the same behavior as a group IP interface that is disabled (shutdown).

srrp-id — Specifies a 32 bit instance ID that must be unique to the system. The instance ID must also

7750 SR OS Services Guide

profile must be defined prior to associating the profile with a SAP in the config>subscriber-

mgmt>sub-ident-policy context.

match the instance ID used by the remote router that is participating in the same SRRP context.

SRRP is intended to perform a function similar to VRRP where adjacent IP hosts within local

subnets use a default gateway to access IP hosts on other subnets.

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Virtual Private Routed Network Services