Alcatel-Lucent 7750 SR Manual page 929

reset. If the timer expires, the SRRP instance assumes that a master does not exist and initiates the
attempt to become master.
When in backup state, the SRRP instance takes the keep-alive interval of the master as represented in
the masters SRRP advertisement message. Once in master state, the SRRP instance uses its own
configured keep-alive interval. The keep-alive-interval may be changed at anytime, but will have no
effect until the SRRP instance is in the master state.
The no form of the command restores the default interval.
Parameters
interval — Specifies the interval, in milliseconds, between SRRP advertisement messages sent when
message-path
Syntax message-path sap-id
no message-path
Context config>service>ies>sub-if>grp-if>srrp
Description
This command defines a specific SAP for SRRP in-band messaging. A message-path SAP must be
defined prior to activating the SRRP instance. The defined SAP must exist on the SRRP instances
group IP interface for the command to succeed and cannot currently be associated with any dynamic
or static subscriber hosts. Once a group IP interface SAP has been defined as the transmission path for
SRRP Advertisement messages, it cannot be administratively shutdown, will not support static or
dynamic subscriber hosts and cannot be removed from the group IP interface.
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.
7750 SR OS Services Guide
operating in the master state.
Values
1 — 100
Default
10 milliseconds
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.
IES Service Configuration Commands
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