Routing Protocol Information

Routing Protocol Information
In order to view detailed information about IS-IS configured on the router, use the following
command:
Austin#show clns protocol
IS-IS Router: <Null Tag>
System Id: 0000.0C00.224D.00 IS-Type: level-1-2
Manual area address(es):
01
Routing for area address(es):
01
Interfaces supported by IS-IS:
Serial1 - IP
Serial0 - IP
Next global update in 530 seconds
Redistributing:
static
Distance: 10
The show clns protocol command gives detailed information of how IS-IS is configured on
the router. What you can learn from the preceding output is the router’s system ID, the level
of the router, the area it is participating in, the areas the router is routing, the interfaces configured
for IS-IS, what’s being redistributed into IS-IS, and the IS-IS cost.
The following command provides you with information about the interfaces on the router
configured for IS-IS:
plano#show clns interface
FastEthernet2/0 is up, line protocol is up
CLNS protocol processing disabled
Serial2/0 is up, line protocol is down
CLNS protocol processing disabled
Serial2/0.1 is down, line protocol is down
Checksums enabled, MTU 1500, Encapsulation FRAME-RELAY
ERPDUs enabled, min. interval 10 msec.
CLNS fast switching disabled
CLNS SSE switching disabled
DEC compatibility mode OFF for this interface
Verifying and Troubleshooting IS-IS 229
Next ESH/ISH in 33 seconds
Routing Protocol: IS-IS
Circuit Type: level-1-2
Interface number 0x0, local circuit ID 0x100
Level-1 Metric: 10, Priority: 127, Circuit ID: plano.00
Number of active level-1 adjacencies: 0
Level-2 Metric: 10, Priority: 0, Circuit ID: plano.00
Number of active level-2 adjacencies: 0
Next IS-IS Hello in 5 seconds
Serial2/0.16 is down, line protocol is down
CLNS protocol processing disabled
Serial2/0.17 is down, line protocol is down
CLNS protocol processing disabled
FastEthernet2/1 is up, line protocol is up
CLNS protocol processing disabled
Serial2/1 is administratively down, line protocol is down
CLNS protocol processing disabled
Loopback0 is up, line protocol is up
CLNS protocol processing disabled
Loopback1 is up, line protocol is up
CLNS protocol processing disabled
For each interface configured for IS-IS, the show clns interface command informs you of
the circuit type, the IS-IS priority, the metric, and the number of active adjacencies.