Alcatel-Lucent 7750 SR OS Service Manual page 1036

VPRN Service Configuration Commands
instance ID), but a unique SRRP gateway MAC is essential to separate the routed packets for each
gateway IP address.
The no form of the command removes the explicit SRRP gateway MAC address from the SRRP
instance. The SRRP gateway MAC address can only be changed or removed when the SRRP instance
is shutdown.
Parameters
mac-address — Specifies a MAC address that is used to override the default SRRP base MAC
keep-alive-interval
Syntax keep-alive-interval interval
no keep-alive-interval
Context config>service>vprn>sub-if>grp-if>srrp
Description
This command defines the interval between SRRP advertisement messages sent when operating in the
master state. The interval is also the basis for setting the master-down timer used to determine when
the master is no longer sending. The system uses three times the keep-alive interval to set the timer.
Every time an SRRP advertisement is seen that is better then the local priority, the timer is 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 between SRRP advertisement messages sent when operating in the
message-path
Syntax message-path sap-id
no message-path
Context config>service>vprn>sub-if>grp-if>srrp
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address
Values
Any MAC address except all zeros, broadcast or multicast addresses. The offset is
expressed in normal Ethernet MAC address notation. The defined gw-mac cannot
be 00:00:00:00:00:00, ff:ff:ff:ff:ff:ff or any multicast address.
If not specified, the system uses the default SRRP gateway MAC address with the last octet
set to the 8 least significant bits of the SRRP instance ID.
master state.
Values
1 — 100 hundreds of milli-seconds
Default
1
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