Root-cause problems for ISISNetwork

Root-cause problems for ISISNetwork lists the root-cause problems that are diagnosed for ISISNetwork.

Table 1. Root-cause problems 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.