lsp-mtu size
–size: the range is from 128 to 9195.
The default is 1497.
• Set the LSP refresh interval.
ROUTER ISIS mode
lsp-refresh-interval seconds
–seconds: the range is from 1 to 65535.
The default is 900 seconds.
• Set the maximum time LSPs lifetime.
ROUTER ISIS mode
max-lsp-lifetime seconds
–seconds: the range is from 1 to 65535.
The default is 1200 seconds.
Example of Viewing IS-IS Configuration (ROUTER ISIS Mode)
To view the configuration, use the show config command in ROUTER ISIS mode or the show
running-config isis command in EXEC Privilege mode.
Dell#show running-config isis
!
router isis
lsp-refresh-interval 902
net 47.0005.0001.000C.000A.4321.00
net 51.0005.0001.000C.000A.4321.00
Dell#
Configuring the IS-IS Metric Style
All IS-IS links or interfaces are associated with a cost that is used in the shortest path first (SPF)
calculations. The possible cost varies depending on the metric style supported.
If you configure narrow, transition, or narrow transition metric style, the cost can be a number between 0
and 63. If you configure wide or wide transition metric style, the cost can be a number between 0 and
16,777,215. The system supports five different metric styles: narrow, wide, transition, narrow transition,
and wide transition.
By default, the system generates and receives narrow metric values. Matrixes or costs higher than 63 are
not supported. To accept or generate routes with a higher metric, you must change the metric style of
the IS-IS process. For example, if you configure the metric as narrow, and a link state PDU (LSP) with wide
metrics is received, the route is not installed.
The Dell Networking OS supports the following IS-IS metric styles.
492 Intermediate System to Intermediate System