Alcatel-Lucent 7750 SR OS Service Manual page 1037

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.
Parameters
sap-id — Specifies the physical port identifier portion of the SAP definition.
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.
Values sap-id:
null
dot1q
qinq
atm
frame
cisco-hdlc slot/mda/port.channel
port-id
aps-id
bundle-type-slot/mda.bundle-num
bpgrp-id:
ccag-id
Virtual Private Routed Network Services
[port-id | bundle-id | bpgrp-id | lag-id | aps-id]
[port-id | bundle-id | bpgrp-id | lag-id | aps-id]:qtag1
[port-id | bundle-id | bpgrp-id | lag-id]:qtag1.qtag2
[port-id | aps-id | bundle-id | bpgrp-id][:vpi/vci |vpi |vpi1.vpi2]
[port-id | bundle-id]:dlci
slot/mda/port[.channel]
aps-group-id[.channel]
aps keyword
group-id 1 — 64
bundle keyword
type ima, ppp
bundle-num 1 — 128
bpgrp-type-bpgrp-num
bpgrp keyword
type ima
bpgrp-num 1 — 1280
ccag-id.path-id[cc-type]:cc-id
ccag keyword
id 1 — 8
path-id a, b
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