Reference Guide

512 | Intermediate System to Intermediate System
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Configuring the distance of a route
Configure the distance for a route using the distance command from ROUTER ISIS mode.
Change the IS-type
You can configure the system to act as one of the following:
• Level 1 router
• Level 1-2 router
• Level 2 router
Use the following command in ROUTER ISIS mode to change the IS-type for the router, u
Use the
show isis protocol command in EXEC Privilege mode to view which IS-type is configured. The
show config command in ROUTER ISIS mode displays only non-default information, so if you do not
change the IS-type, the default value (level-1-2) is not displayed.
The default is Level 1-2 router. When the IS-type is Level 1-2, the software maintains two Link State
databases, one for each level. Use the
show isis database command to view the Link State databases .
FTOS#show isis database
IS-IS Level-1 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
B233.00-00 0x00000003 0x07BF 1088 0/0/0
eljefe.00-00 * 0x00000009 0xF76A 1126 0/0/0
eljefe.01-00 * 0x00000001 0x68DF 1122 0/0/0
eljefe.02-00 * 0x00000001 0x2E7F 1113 0/0/0
Force10.00-00 0x00000002 0xD1A7 1102 0/0/0
IS-IS Level-2 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
B233.00-00 0x00000006 0xC38A 1124 0/0/0
eljefe.00-00 * 0x0000000D 0x51C6 1129 0/0/0
eljefe.01-00 * 0x00000001 0x68DF 1122 0/0/0
narrow transition 0 to 63
transition 0 to 63
Command Syntax Command Mode Purpose
is-type {level-1 | level-1-2 | level-2-only} ROUTER ISIS Configure IS-IS operating level for a router.
Default is level-1-2.
Command Syntax Command Mode Purpose
is-type {level-1 | level-1-2 | level-2} ROUTER ISIS Change the IS-type for the IS-IS process.
Table 26-3. Correct Value Range for the isis metric command
Metric Style Correct Value Range