Command Line Reference Guide

Intermediate System to Intermediate System (IS-IS) | 821
Metric: 10 IPv6 (MT-IPv6) 1011::/64
Metric: 10 IPv6 1511::/64
Metric: 10 IP 10.1.1.0 255.255.255.0
Hostname: ISIS
IS-IS Level-2 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
ISIS.00-00 * 0x0000002D 0xB2CD 1075 0/0/0
Area Address: 49.0000.0001
NLPID: 0xCC 0x8E
IP Address: 10.1.1.1
IPv6 Address: 1011::1
Topology: IPv4 (0x00) IPv6 (0x8002)
Metric: 10 IS OSPF.00
Metric: 10 IS (MT-IPv6) OSPF.00
Metric: 10 IP 10.1.1.0 255.255.255.0
Metric: 10 IP 15.1.1.0 255.255.255.0
Metric: 20 IP 10.3.3.0 255.255.255.0
Metric: 10 IPv6 (MT-IPv6) 1011::/64
Metric: 10 IPv6 (MT-IPv6) 1511::/64
Metric: 10 IPv6 (MT-IPv6) 2511::/64
Metric: 20 IPv6 (MT-IPv6) 1033::/64
Metric: 10 IPv6 2511::/64
Metric: 20 IPv6 1033::/64
Hostname: ISIS
FTOS#
Table 30-82. Command Example Fields
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 next octet is the pseudonode ID. If this byte is not zero, then the LSP describes
system links. If this byte is zero (0), then 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.