NEC IP8800/S2400 Series Troubleshooting Manual page 166

3.
Troubleshooting Functional Failures in Operation
Table 3-59: Analysis Method for Abnormal Status in GSRP Configuration
No. Troubleshooting Steps and Command
1 Check the status of the VLAN group in which
master/backup is not switched as expected,
using the show gsrp command.
2 Check to see if the master/backup selection
method (Selection-Pattern), the number of
active ports (Active-Ports) on this system and
the remote system, the priority information
(Priority), and master/backup selection based
on the MAC address are correct, using the
show gsrp, show gsrp, and
<GSRP-ID> vlan-group <VLAN group
ID list> commands.
3 Check the delay time until reflection to the
active port is made (port-up-delay) and
remaining delay time (delay) using the show
gsrp detail and show gsrp
<GSRP-ID> port <Port list> commands.
When detecting the reception timeout of GSRP Advertise in GSRP configuration causes unknown adjacency, isolate
the cause according to the table below.
Table 3-60: Analysis Method for GSRP Unknown Adjacency
No. Troubleshooting Steps and Command
1 Check to see the transmission interval of GSRP
Advertise frames (Advertise Interval) and the
retaining period of GSRP Advertise frames
(Advertise Hold Time) by using the show gsrp
detail command.
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Go to No. 2 if one system is master and the other system is non-master.
If one of the systems is Backup (No Neighbor), recover from the communication
failure between direct links. If necessary, change the system that is Backup (No
Neighbor) to Master using the set gsrp master command.
If both systems are Backup or Backup (Waiting), check to see if the master/backup
selection method (Selection-Pattern) is the same between the systems.
If both systems are Backup (Lock), reset the lock status of either one of the systems
or both systems.
If both systems are Master, restart one of GSRP programs using the restart
gsrp command.
In other cases, temporary status transition is in progress. Wait for a while.
Go to No. 3 if the number of active ports (Active Ports) does not match the number
of Up ports (Up Ports) although the items above are correct.
Restart the GSRP program on this system using the restart gsrp command
if the selection is incorrect.
If the delay time (port-ip-delay) is infinite (infinity), execute the clear gsrp
port-up-delay command to reflect the number of Up ports (UP Ports) to the
number of active ports (Active Ports).
If delay time (port-up-delay) is not infinite (infinity) and the remaining delay time
(delay) exists, wait until they are reflected after the remaining delay time is over.
Execute the clear gsrp port-up-delay command for immediate
reflection.
When the retaining period of GSRP Advertise frames is the same or
shorter than the transmission interval of GSRP advertise frames, set a
bigger value in the retaining period of GSRP advertise frames than the
transmission interval of GSRP Advertise frames.
When the retaining period of GSRP Advertise frames is longer than the
transmission interval of GSRP advertise frames, set a bigger value in
the retaining period of GSRP advertise frames.
Seeing "3.23.1 Checking Filtering/QoS Setting
see the factors that discard GSRP advertise frames (such as filters,
bandwidth monitoring for QoS control, discard control, or shaper).
Action
Action
Information," check to