Alcatel-Lucent 7750 SR Manual page 1283

Os services guide

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Defining an SRRP gateway IP address on a subscriber subnet is not optional when the subnet is

associated with a group IP interface with SRRP enabled. Enabling SRRP (no shutdown) will fail if

one or more subscriber subnets do not have an SRRP gateway IP address defined. Creating a new

subscriber subnet without an SRRP gateway IP address defined will fail when the subscriber subnet is

associated with a group IP interface with an active SRRP instance. Once SRRP is enabled on a group

interface, the SRRP instance will manage the ARP response and routing behavior for all subscriber

hosts reachable through the group IP interface.

The no form of the command removes the address from a subscriber subnet. The address command

for the specific subscriber subnet must be executed without the gw-address parameter. To succeed, all

SRRP instances associated with the subscriber subnet must removed or shutdown.

ip-address/mask | ip-address netmask — Specifies the address space associated with the subscriber

gw-ip-address ip-address — Specifies a separate IP address within the subnet for SRRP routing

group-interface

[no] group-interface ip-int-name

config>service>vprn>subscriber-interface

This command enables the context to configure a group interface. A group interface is an interface

that may contain one or more SAPs. This interface is used in triple-play services where multiple SAPs

are part of the same subnet.

ip-int-name — Configures the interface group name. If the string contains special characters (#, $,

spaces, etc.), the entire string must be enclosed within double quotes.

7750 SR OS Services Guide

purposes. This parameter must be followed by a valid IP interface that exists within the

subscriber subnet created by the address command. The defined gateway IP address cannot

currently exist as a subscriber host (static or dynamic). If the defined ip-address already exists as

a subscriber host address, the address command will fail. The specified ip-address must be

unique within the system.

The gw-address parameter may be specified at anytime. If the subscriber subnet was created

previously, executing the address command with a gw-address parameter will simply add the

SRRP gateway IP address to the existing subnet.

If the address command is executed without the gw-address parameter when the subscriber

subnet is associated with an active SRRP instance, the address will fail. If the SRRP instance is

inactive or removed, executing the address command without the gw-address parameter will

remove the SRRP gateway IP address from the specified subscriber subnet.

If the address command is executed with a new gw-address, all SRRP instances currently

associated with the specified subscriber subnet will be updated with the new SRRP gateway IP

Virtual Private Routed Network Services