ESRP Commands
ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
ExtremeWare XOS 11.5 Command Reference Guide
1264
configure esrp elrp-premaster-poll enable
configure esrp <esrpDomain> elrp-premaster-poll enable {count <count> |
interval <interval>}
Description
Enables the use of ELRP by ESRP in the pre-master state, and configures how many times the switch
sends ELRP PDUs and how often the switch sends ELRP PDUS in the pre-master state.
Syntax Description
Default
●
Use of ELRP in the pre-master state—disabled
●
Count—3 times
●
Interval—1 second
Usage Guidelines
Use this command to enable the use of ELRP by ESRP in the pre-master state to prevent network loops
from occurring. When an ESRP-enabled switch is in the pre-master state (waiting to become the master),
and you enable elrp-premaster-poll, the switch periodically sends ELRP PDUs at the configure level for
a specified number of times. If there is a loop in the network, the transmitted PDUs are received by the
switch. If this happens, the ESRP pre-master switch does not transition to the master state; rather, the
switch transitions to the slave state.
Extreme Networks recommends that you enable both premaster and master polling when using ELRP
with ESRP. To enable master polling, use the
configure esrp <esrpDomain> elrp-master-poll
enable {interval <interval>}
.
If you attempt to configure master polling before premaster polling, the switch displays an error
message similar to the following:
ERROR: Premaster-poll should be enabled before enabling master-poll!
If this happens, first configure premaster polling followed by master polling (if required).
If you do not specify the optional
count
or
interval
parameters, the default values are used.
If the sender does not receive packets, there is no loop in the network.
esrpDomain
Specifies an ESRP domain name.
count
Specifies the number of times the switch sends ELRP PDUs. The default is 3.
The range is 1 to 32.
interval
Specifies how often, in seconds, the ELRP PDUs are sent. The default is 1
second. The range is 1 to 32 seconds.
