Reference Guide

Field Description
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
Force10 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.
Example
The bold sections identify that Multi-Topology IS-IS is enabled.
FTOS#show isis database
IS-IS Level-1 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
ISIS.00-00 * 0x00000006 0xCF43 580 0/0/0
IS-IS Level-2 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
ISIS.00-00 * 0x00000006 0xCF43 580 0/0/0
!
FTOS#show isis database detail ISIS.00-00
1021