Root-cause problems for ISISNetwork lists the root-cause problems that are diagnosed for ISISNetwork.
| Problem 1 |
Description |
|---|---|
| 1**Problems prevent adjacencies from forming on the affected interface(s). |
|
| AreaIDMismatch |
Area ID on at least one of the interfaces in this IS-IS network does not match the area ID on the neighboring interfaces.
Note:
If both endpoints of an IS-IS adjacency support Level-2 (L2) service, area IDs are allowed to be different; in that case, no AreaIDMismatch is diagnosed. |
| DuplicateSystemID |
At least two neighboring interfaces in this IS-IS network have the same IS-IS system ID. |
| HelloIntervalMismatch |
Hello interval on at least one of the interfaces in this IS-IS network does not match the Hello interval on the neighboring interface. |
| MTUMismatch |
Maximum transmission unit (MTU) on at least one of the interfaces in this IS-IS network does not match the MTU on the neighboring interfaces. |
| NetmaskMismatch |
Netmask on at least one of the interfaces in this IS-IS network does not match the netmask on the neighboring interfaces. |
