Reference v4.1.0 Instruction Manual

Network OS Command Reference 253
53-1003115-01
hello-interval (ELD)
2
hello-interval (ELD)
This global level configuration defines the interval for sending edge-loop detection (ELD) PDUs.
Synopsis hello-interval milliseconds
no hello-interval milliseconds
Operands milliseconds Interval time in milliseconds.
Defaults The default value is 1000 ms (one second)
Command Modes ELD configuration mode
Description The range is from 100 ms through 5 seconds.
Usage Guidelines This command applies only in Brocade VCS Fabric mode.
It is the user’s responsibility to make sure that the hello interval is set to the same value across
the various VCS clouds. Otherwise, the ELD port shutdown will be non-deterministic.
Extreme caution must be taken when setting the hello-interval value to anything less than 1
second, as it will heavily increase the cpu load due to the amount of packets transmitted and
received (depending on the number of ELD instances and other system configuration), and might
cause undesirable performance and scalability results.
Enter no hello-interval milliseconds to return to the default setting.
Examples To set the PDU hello-interval to 5 seconds:
switch(config)# protocol edge-loop-detection
switch(config-eld)# hello-interval 5000
To return the PDU hello-interval to the default value (1000 ms):
switch(config-eld)# no hello-interval 5000
See Also interface, clear edge-loop-detection, edge-loop-detection vlan, hello-interval, pdu-rx-limit,
show edge-loop-detection globals, show edge-loop-detection interface,
show edge-loop-detection rbridge-id, shutdown-time