Extreme Networks ExtremeWare XOS Command Reference Manual page 1258

ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
ESRP Commands
ESRP re-election can occur if sticky is set on the master and a local event occurs. During this time, if the
current master has lower election parameters, the backup can become the new master.
Switch Behavior . If a switch is master, it actively provides Layer 3 routing services to other VLANs, and
Layer 2 switching between all the ports of that VLAN. Additionally, the switch exchanges ESRP packets
with other switches that are in slave mode.
If a switch is in slave mode, it exchanges ESRP packets with other switches on that same VLAN. When
a switch is in slave mode, it does not perform Layer 3 routing or Layer 2 switching services for the
VLAN.
Updating the Election Algorithm . ESRP uses the default election policy for extended mode. If you have
an ESRP domain operating in standard mode, the domain ignores the sticky and weight algorithms. To
change the election algorithm, you must first disable the ESRP domain and then configure the new
election algorithm. If you attempt to change the election algorithm without disabling the domain first,
an error message appears.
To disable the ESRP domain, use the following command:
disable esrp {<esrpDomain>}
To modify the election algorithm, use the following command:
configure esrp <esrpDomain> election-policy [ports > track > priority | ports > track
> priority > mac | priority > mac | priority > ports > track > mac | priority > track
> ports > mac | sticky > ports > track > priority | sticky > ports > track > priority
> mac | sticky > ports > weight > track > priority > mac | sticky > priority > mac |
sticky > priority > ports > track > mac | sticky > priority > track > ports > mac |
sticky > track > ports > priority > | track > ports > priority | track > ports >
priority > mac >]
If you attempt to use an election algorithm not supported by the switch, an error message similar to the
following appears:
ERROR: Specified election-policy is not supported!
Supported Policies:
1. sticky > ports > weight > track > priority > mac
2. ports > track > priority
3. sticky > ports > track > priority
4. ports > track > priority > mac
5. sticky > ports > track > priority > mac
6. priority > mac
7. sticky > priority > mac
8. priority > ports > track > mac
9. sticky > priority > ports > track > mac
10. priority > track > ports > mac
11. sticky > priority > track > ports > mac
12. track > ports > priority
13. sticky > track > ports > priority
14. track > ports > priority > mac
15. sticky > track > ports > priority > mac
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ExtremeWare XOS 11.5 Command Reference Guide