1064 ExtremeWare Software 7.3.0 Command Reference Guide
ESRP Commands
configure msm-failover esrp-failover-mode
configure msm-failover esrp-failover-mode [none | rapid-reelection |
remain-esrp-master-in-l2-domains {<reelect-timeout>}]
Description
Configures the desired operation of hitless failover when ESRP is in use.
Syntax Description
Default
None.
Usage Guidelines
The
configure msm-failover esrp-failover-mode
command affects all ESRP domains. However,
individual domains may respond differently to hitless failover depending on circumstances and
configurations.
When using the
remain-esrp-master-in-l2-domains
option, the behavior is hitless within an ESRP
domain whenever that domain is configured with layer 2 tracking options only. If you have an ESRP
domain with layer 3 tracking options, or you configure an ESRP VLAN to have both layer 2 and layer 3
tracking options, the
remain-esrp-master-in-l2-domains
option is overridden. Rather, the ESRP
domain or VLAN assumes the behavior of the
rapid-reelection
option.
none Specifies that ESRP does not participate in hitless failover. The master switch
blocks its ports during a failover and performs a full initialization of ESRP. This
is the default.
rapid-reelection Specifies that ESRP behaves as if none was selected. In addition, if a failover
occurs when the switch is the master in an ESRP domain, the switch sends a
notification that the standby nodes should elect a new master as soon as
possible. This facilitates a faster ESRP master reelection than none.
remain-esrp-master-in-l2-domains Specifies that an ESRP master notifies the standby nodes of the failover and
wishes to remain the master. Along with the notification, it sends the amount
of time in seconds that the standby nodes should wait before beginning
reelection.
reelect-timeout Specifies the amount of time the standby nodes should wait before beginning
reelection. The default is 30 seconds, and the range is 15 - 180 seconds.
Table 19: Hitless failover support for ESRP tracking options
Tracking Option Hitless Support
Diagnostic Yes
Environment Yes
VLAN Yes
OSPF, BGP, RIP No
IP Route No
Ping No
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