User guide

Commands for Configuring and Monitoring EAPS
Summit24e3 Switch Installation and User Guide 125
Defining the EAPS Mode of the Switch
To configure the EAPS node type of the switch, use the following command:
config eaps <name> mode [master | transit]
One node on the ring must be configured as the master node for the specified domain; all other nodes
on the ring are configured as transit nodes for the same domain.
The following command example identifies this switch as the master node for the domain named
eaps_1.
config eaps eaps_1 mode master
The following command example identifies this switch as a transit node for the domain named eaps_1.
config eaps eaps_1 mode transit
Configuring EAPS Polling Timers
To set the values of the polling timers the master node uses for the EAPS health-check packet that is
circulated around the ring for an EAPS domain, use the following command:
config eaps <name> [hellotime <seconds> | failtime <seconds>]
NOTE
This command applies only to the master node. If you configure the polling timers for a transit node,
they will be ignored. If you later reconfigure that transit node as the master node, the polling timer
values will be used as the current values.
Use the
hellotime keyword and its associated seconds parameter to specify the amount of time the
master node waits between transmissions of health-check packets on the control VLAN.
seconds must
be greater than 0 when you are configuring a master node. The default value is one second.
NOTE
Increasing the hellotime value keeps the processor from sending and processing too many
health-check packets. Increasing the
hellotime value should not affect the network convergence time,
because transit nodes are already sending “link down” notifications.
Use the
failtime keyword and its associated seconds parameter to specify the amount of time the
master node waits before declaring a failed state and opens the logically blocked VLANs on the
secondary port.
seconds must be greater than the configured value for hellotime. The default value is
three seconds.
NOTE
Increasing the failtime value provides more protection against frequent “flapping” between the
complete state and the failed state by waiting long enough to receive a health-check packet when the
network is congested.