Alcatel-Lucent 7750 SR Manual page 935

The SRRP instance message-path command may be executed at anytime on the SRRP instance.
Changing the message SAP will fail if a dynamic or static subscriber host is associated with the new
SAP. Once successfully changed, the SRRP instance will immediately disable anti-spoof on the SAP
and start sending SRRP Advertisement messages if the SRRP instance is activated.
Changing the current SRRP message SAP on an active pair of routers should be done in the following
manner:
Shutting down the backup SRRP instance prevents the SRRP instances from becoming master due to
temporarily using differing message path SAPs.
If an MCS peering is operational between the redundant nodes and the SRRP instance has been
associated with the peering, the designated message path SAP will be sent from each member.
The no form of the command can only be executed when the SRRP instance is shutdown. Executing
no message-path allows the existing SAP to be used for subscriber management functions. A new
message-path SAP must be defined prior to activating the SRRP instance.
Parameters
sap-id — Specifies the physical port identifier portion of the SAP definition. See Common CLI
policy
Syntax [no] policy vrrp-policy-id
Context config>service>ies>sub-if>grp-if>srrp
Description
This command associates one or more VRRP policies with the SRRP instance. A VRRP policy is a
collection of connectivity and verification tests used to manipulate the in-use priorities of VRRP and
SRRP instances. A VRRP policy can test the link state of ports, ping IP hosts, discover the existence
of routes in the routing table or the ability to reach L2 hosts. When one or more of these tests fail, the
VRRP policy has the option of decrementing or setting an explicit value for the in-use priority of an
SRRP instance.
More than one VRRP policy may be associated with an SRRP instance. When more than one VRRP
policy is associated with an SRRP instance the delta decrement of the in-use priority is cumulative
unless one or more test fail that have explicit priority values. When one or more explicit tests fail, the
lowest priority value event takes effect for the SRRP instance. When the highest delta-in-use-limit is
used to manage the lowest delta derived in-use priority for the SRRP instance.
VRRP policy associations may be added and removed at anytime. A maximum of two VRRP policies
can be associated with a single SRRP instance.
The no form of the command removes the association with vrrp-policy-id from the SRRP instance.
Parameters vrrp-policy-id — Specifies one or more VRRP policies with the SRRP instance.
7750 SR OS Services Guide
1. Shutdown the backup SRRP instance.
2. Change the message SAP on the shutdown node.
3. Change the message SAP on the active master node.
4. Re-activate the shutdown SRRP instance.
Command Descriptions on page 1933 for command syntax.
Values
1 — 9999
IES Service Configuration Commands
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