Reference Guide

Command
History
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
The following describes the show isis database command shown in the
Example below.
Field Description
IS-IS Level-1/
Level-2 Link
State Database
Displays the IS-IS link state database for Level 1 or Level 2.
LSPID
Displays the LSP identifier.
The first six octets are the System ID of the originating
router.
The first six octets are the System ID of the originating
router. The next octet is the pseudonode ID. If this byte is
not zero, the LSP describes system links. If this byte is zero
(0), the LSP describes the state of the originating router.
The designated router for a LAN creates and floods a
pseudonode LSP and describes the attached systems.
The last octet is the LSP number. An LSP will be divided into
multiple LSP fragments if there is more data than cannot fit
in a single LSP. Each fragment has a unique LSP number.
An * after the LSPID indicates that an LSP was originated by
the system where this command was issued.
LSP Seq Num This value is the sequence number for the LSP that allows
other systems to determine if they have received the latest
information from the source.
LSP Checksum This is the checksum of the entire LSP packet.
LSP Holdtime This value is the amount of time, in seconds, that the LSP
remains valid. A zero holdtime indicates that this is a purged
LSP and is being removed from the link state database. A
value between brackets indicates the duration that the
purged LSP stays in the database before being removed.
ATT This value represents the Attach bit. This indicates that the
router is a Level 2 router and can reach other areas. Level 1-
only routers and Level 1-2 routers that have lost connection
to other Level 2 routers use the Attach bit to find the closest
Level 2 router. They point a default route to the closest Level
2 router.
P This value represents the P bit. This bit is always set to zero
as Dell Networking does not support area partition repair.
OL This value represents the overload bit, determining
congestion. If the overload bit is set, other routers do not use
this system as a transit router when calculating routes.
Intermediate System to Intermediate System (IS-IS)
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