Brocade Communications Systems RFS6000 System Reference Manual page 308

5
Redundancy ID
Discovery Period
Heartbeat Period
Hold Time
Critical Resource
Handle STP
convergence
Enable DHCP
Redundancy
Auto Revert
Revert Now
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Define an ID for the cluster group. All the switches configured in the cluster should
have the same Cluster ID. The valid range is
1-65535.
Discovery Period
Use the to configure a cluster member discovery interval.
During the discovery time, a switch discovers the existence of other switches within
the redundancy group. Configure an interval between 10 and 60 seconds. The
default value is 30 seconds.
Heartbeat Period
The is the interval heartbeat messages are sent. Heartbeat
messages discover the existence and status of other members within the group.
Configure an interval between
1 and 255 seconds. The default value is 5seconds.
Hold Time
Define the for a redundancy group. If there are no heartbeats received
from a peer during the hold time, the peer is considered down. In general, the hold
period is configured for three times the heartbeat period. Meaning, if three
consecutive heartbeats are not received from the peer, the peer is assumed down
and unreachable. The hold time is required to be longer than the heartbeat interval.
Configure a hold time between 10 and 255 seconds. The default is 15 seconds.
Enter the IP address of the Critical Resource. When the heartbeat is lost, this
resource will be checked for reachability. The critical resource can be any gateway,
server or host. If the critical resource is not reachable and the heartbeat is still lost,
the switch will de-adopt APs and continue to de-adopt APs until instructed
otherwise.
Handle STP convergence
Select the
(STP) convergence for the switch. In general, this protocol is enabled in layer 2
networks to prevent network looping. If the network is enabled for STP to prevent
looping, the network forwards data only after STP convergence. Enabling STP
convergence delays the redundancy state machine execution until the STP
convergence is completed (the standard protocol value for STP convergence is 50
seconds). Delaying the state machine is important to load balance Access Ports at
startup.
Enables DHCP Redundancy for member switches. DHCP Redundancy allows an
administrator to have only one DHCP server running at any time in a cluster. The
clustering protocol enables all peers participating in DHCP redundancy to determine
the active DHCP server among them. The switch with lowest Redundancy IP is
selected as the active DHCP server for the cluster. This selected active DHCP server
can be either a primary or standby switch. The other switches do not provide DHCP
service as long as the selected DHCP server switch is active.
Auto Revert
Check this box to enable the
for the switch to revert. Configure the interval between 1 and 1800 minutes. The
default revert time is 5 minutes.
When a primary switch fails, the standby switch takes over APs adopted by the
primary. If the auto revert feature is enabled, when the failed primary switch comes
back up, the standby starts a timer based on the auto-revert interval. At the expiry of
auto-revert interval (if the primary switch is still up), the standby switch releases all
adopted APs and goes back to a monitoring mode. The expiry timer either will be
stopped or restarted if the primary switch goes down and comes up during the
auto-revert interval.
Reverts an active fail-over standby switch to a passive standby switch. When a user
presses this button, the standby switch will un-adopt all its adopted APs and move
into a standby (passive) mode only if all configured members are up again. The
revert function does not push APs to the primary switch unless the primary switch
has failed over.
Brocade Mobility RFS4000, RFS6000, and RFS7000 System Reference Guide
checkbox to enable Spanning Tree Protocol
feature and specify the time (in minutes)
53-1002515-01