Mypower
S4100
Troubleshooting
Maipu Confidential & Proprietary Information
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debug isis reach-info: Diagnose the process of creating available
information of the ISIS IP protocol stack.
debug isis route: Diagnose the process information about the ISIS
learning routes.
debug isis snp-packets: Diagnose the CSNP/PSNP packet sending and
receiving of ISIS.
debug isis spf: Diagnose the SPF calculation information about ISIS.
debug isis update-packets: Diagnose the LSP interaction of ISIS.
ISIS Troubleshooting
Fault 1: Creating neighbor failed
Possible
Reasons
Judging Methods and Solutions
The neighbor is down
1.
The interface is not covered in the ISIS.
How to find out the cause:
Use the show isis interface command to check whether the
expected interface is added to the IS-IS.
Solution:
Check the configuration of the relevant interface. Cover the
interface into the relevant ISIS process.
2.
ISIS protocol command is disabled at the interface of ISIS
process.
How to find out the cause:
Use the show run command to check whether the command of
disabling ISIS protocol is enabled at the expected interface or ISIS
process. Open the bebug isis adj-packets to check whether IIH
packets are sent at the relevant interface.
Solution:
Check the configuration of the relevant interface or ISIS process.
Remove the command for closing ISIS protocol configured in the
relevant interface of ISIS process. If the command is not configured
at the interface and the ISIS process, open the debug to check that
the packets are sent but not received, check the opposite end.
Remove the command of disabling ISIS protocol at the relevant
interface or ISIS process.
3.
The maximum area addresses set at two parties are not
matched.
How to find out the cause:
Open debug isis adj-packets, the Max area addresses mismatch is
displayed. Use the show run router isis command to check whether
the number of maximum area addresses are the same.
Solution:
Modify the maximum of area addresses to the same value.
4.
NET address does not match.
How to find out the cause:
Run the show run router isis command to check whether the NET
address of the ISIS process is matched. Open the debug isis adj-
packets to see the prompt message: area address mismatch.
Solution:
Check the NET address configuration of the ISIS process in the two
