• 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. Dell Networking OS supports five different metric styles: narrow, wide, transition, narrow
transition, and wide transition.
By default, Dell Networking OS 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.
Dell Networking OS supports the following IS-IS metric styles.
Table 35. Metric Styles
Metric Style Characteristics Cost Range Supported on IS-IS
Interfaces
narrow Sends and accepts narrow or old
TLVs (Type, Length, Value).
0 to 63
wide Sends and accepts wide or new
TLVs.
0 to 16777215
transition Sends both wide (new) and
narrow (old) TLVs.
0 to 63
narrow transition Sends narrow (old) TLVs and
accepts both narrow (old) and
wide (new) TLVs.
0 to 63
496 Intermediate System to Intermediate System