Job aid

The following table describes the fields for the show isis lsdb tlv and the show isis lsdb lspid commands.

Parameter

Description

LSP ID

Indicates the LSP ID assigned to external IS-IS routing devices.

LEVEL

Indicates the level of the external router: l1, l2, or l12.

LIFETIME

Indicates the maximum age of the LSP. If the max-lsp-gen-interval is set to 900 (default), then the lifetime value begins to count down from 1200 seconds and updates after 300 seconds if connectivity remains. If the timer counts down to zero, the counter adds on an additional 60 seconds, then the LSP for that router is lost. This happens because of the zero age lifetime, which is detailed in the RFC standards.

SEQNUM

Indicates the LSP sequence number. This number changes each time the LSP is updated.

CKSUM

Indicates the LSP checksum. This is an error checking mechanism used to verify the validity of the IP packet.

HOST-NAME

Indicates the host-name.