Verifying and Troubleshooting IS-IS
Table 4-2 shows some IS-IS verification and troubleshooting commands, and
describes the information you obtain from these commands.
Table 4-2 IS-IS show Commands
Command Description
show isis topology Displays the topology database and least cost
paths.
show clns route Displays the L2 routing table.
show isis route Displays the L1 routing table. Requires that
CLNS routing is enabled.
show clns protocol Displays the router’s IS type, system ID,
area ID, interfaces running IS-IS, and any
redistribution.
show clns neighbors Displays the adjacent neighbors and their IS
level.
show clns interface Displays IS-IS details for each interface, such
as circuit type, metric, and priority.
show ip protocols Displays the integrated IS-IS settings.