Concept Guide

eljefe.00-00 * 0x0000000A 0xF963 1196 0/0/1
eljefe.01-00 * 0x00000001 0x68DF 1108 0/0/0
eljefe.02-00 * 0x00000001 0x2E7F 1099 0/0/0
Force10.00-00 0x00000002 0xD1A7 1088 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 1110 0/0/0
eljefe.00-00 * 0x0000000E 0x53BF 1196 0/0/1
eljefe.01-00 * 0x00000001 0x68DF 1108 0/0/0
eljefe.02-00 * 0x00000001 0x2E7F 1099 0/0/0
Force10.00-00 0x00000004 0xCDA9 1093 0/0/0
DellEMC#
Debugging IS-IS
To debug IS-IS processes, use the following commands.
• View all IS-IS information.
EXEC Privilege mode
debug isis
• View information on all adjacency-related activity (for example, hello packets that are sent and received).
EXEC Privilege mode
debug isis adj-packets [interface]
To view specic information, enter the following optional parameter:
– interface: Enter the type of interface and slot/port information to view IS-IS information on that interface only.
• View information about IS-IS local update packets.
EXEC Privilege mode
debug isis local-updates [interface]
To view specic information, enter the following optional parameter:
– interface: Enter the type of interface and slot/port information to view IS-IS information on that interface only.
• View IS-IS SNP packets, include CSNPs and PSNPs.
EXEC Privilege mode
debug isis snp-packets [interface]
To view specic information, enter the following optional parameter:
– interface: Enter the type of interface and slot/port information to view IS-IS information on that interface only.
• View the events that triggered IS-IS shortest path rst (SPF) events for debugging purposes.
EXEC Privilege mode
debug isis spf-triggers
• View sent and received LSPs.
EXEC Privilege mode
debug isis update-packets [interface]
To view specic information, enter the following optional parameter:
– interface: Enter the type of interface and slot/port information to view IS-IS information on that interface only.
Dell EMC Networking OS displays debug messages on the console. To view which debugging commands are enabled, use the show
debugging command in EXEC Privilege mode.
528
Intermediate System to Intermediate System