• interface: Enter the type of interface and slot/port information to view IS-IS information on thatinterface only.• View the events that triggered IS-IS shortest path first (SPF) events for debugging purposes.EXEC Privilege modedebug isis spf-triggers• View sent and received LSPs.EXEC Privilege modedebug isis update-packets [interface]To view specific information, enter the following optional parameter:• interface: Enter the type of interface and slot/port information to view IS-IS information on thatinterface only.The system displays debug messages on the console. To view which debugging commands are enabled, usethe show debugging command in EXEC Privilege mode.To disable a specific debug command, enter the keyword no then the debug command. For example, todisable debugging of IS-IS updates, use the no debug isis updates-packets command.To disable all IS-IS debugging, use the no debug isis command.To disable all debugging, use the undebug all command.IS-IS Metric StylesThe following sections provide additional information about the IS-IS metric styles.• Configuring the IS-IS Metric Style• Configure Metric ValuesDell 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)Configure Metric ValuesFor any level (Level-1, Level-2, or Level-1-2), the value range possible in the isis metric command inINTERFACE mode changes depending on the metric style.The following describes the correct value range for the isis metric command.Intermediate System to Intermediate System 603
