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Intermediate System to Intermediate System | 531
FTOS displays debug messages on the console. Use the show debugging command in EXEC Privilege
mode to view which debugging commands are enabled.
Enter the keyword no followed by the debug command to disable a specific debug command. For example,
to disable debugging of IS-IS updates, enter
no debug isis updates-packets.
Enter
no debug isis to disable all IS-IS debugging.
Enter
undebug all to disable all debugging, e.
IS-IS Metric Styles
The following sections provide additional information on IS-IS Metric Styles.
• IS-IS Metric Styles on page 531
• Configure Metric Values on page 532
FTOS supports the following IS-IS metric styles:
• narrow (supports only type, length, and value (TLV) up to 63)
• wide (supports TLV up to 16777215)
• transition (supports both narrow and wide and uses a TLV up to 63)
• narrow transition (accepts both narrow and wide and sends only narrow or old-style TLV)
• wide transition (accepts both narrow and wide and sends only wide or new-style TLV)
debug isis snp-packets [interface] EXEC Privilege View IS-IS SNP packets, include CSNPs and
PSNPs.
To view specific information, enter one of the
following optional parameters:
• interface: Enter the type of interface and slot/port
information to view IS-IS information on that
interface only.
debug isis spf-triggers
EXEC Privilege View the events that triggered IS-IS shortest path
first (SPF) events for debugging purposes.
debug isis update-packets [interface] EXEC Privilege View sent and received LSPs.
To view specific information, enter one of the
following optional parameters:
•
interface: Enter the type of interface and slot/port
information to view IS-IS information on that
interface only.
Command Syntax Command Mode Purpose