PurposeCommand or Action
Specifies the interface to be configured and enter interface
configuration mode. If the interface is not already configured
interface interface-id
Example:
Device(config)# interface
gigabitethernet 1/0/1
Step 2
as a Layer 3 interface, enter the no switchport command to
put it into Layer 3 mode.
(Optional) Configures the metric (or cost) for the specified
interface. The range is from 0 to 63. The default is 10. If no
isis metric default-metric [level-1 |
level-2]
Step 3
level is entered, the default is to apply to both Level 1 and
Level 2 routers.
Example:
Device(config-if)# isis metric
15
(Optional) Specifies the length of time between hello packets
sent by the switch. By default, a value three times the hello
isis hello-interval {seconds |
minimal} [level-1 | level-2]
Step 4
interval seconds is advertised as the holdtime in the hello
Example:
Device(config-if)# isis
hello-interval minimal
packets sent. With smaller hello intervals, topological changes
are detected faster, but there is more routing traffic.
• minimal—causes the system to compute the hello
interval based on the hello multiplier so that the resulting
hold time is 1 second.
• seconds—the range is from 1 to 65535. The default is
10 seconds.
(Optional) Specifies the number of IS-IS hello packets a
neighbor must miss before the router should declare the
isis hello-multiplier multiplier
[level-1 | level-2]
Step 5
adjacency as down. The range is from 3 to 1000. The default
Example:
Device(config-if)# isis
hello-multiplier 5
is 3. Using a smaller hello-multiplier causes fast convergence,
but can result in more routing instability.
(Optional) Configures the IS-IS complete sequence number
PDU (CSNP) interval for the interface. The range is from 0
to 65535. The default is 10 seconds.
isis csnp-interval seconds [level-1
| level-2]
Example:
Device(config-if)# isis
csnp-interval 15
Step 6
(Optional) Configures the number of seconds between
retransmission of IS-IS LSPs for point-to-point links. The
isis retransmit-interval seconds
Example:
Device(config-if)# isis
retransmit-interval 7
Step 7
value you specify should be an integer greater than the
expected round-trip delay between any two routers on the
network. The range is from 0 to 65535. The default is 5
seconds.
(Optional) Configures the IS-IS LSP retransmission throttle
interval, which is the maximum rate (number of milliseconds
isis retransmit-throttle-interval
milliseconds
Step 8
between packets) at which IS-IS LSPs will be re-sent on
Routing Configuration Guide, Cisco IOS XE Everest 16.6.x (Catalyst 9500 Switches)
156
Configuring IP Unicast Routing
Configuring IS-IS Interface Parameters
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