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Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

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show isis database

Display the IS-IS link state database.

Syntax show isis database [level-1 | level-2] [local] [detail | summary] [ lspid]
Parameters
level-1 (OPTIONAL) Displays the Level 1 IS-IS link-state database.
level-2 (OPTIONAL) Displays the Level 2 IS-IS link-state database.
local (OPTIONAL) Displays local link-state database information.
detail (OPTIONAL) Detailed link-state database information of each LSP displays when specified. If not specified, a summary displays.
summary (OPTIONAL) Summary of link-state database information displays when specified.
lspid (OPTIONAL) Display only the specified LSP.
Command Modes
  • EXEC
  • EXEC Privilege
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information The following describes the show isis database command shown in the following example.
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 is 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 the system originates an LSP 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 value 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.
Example

The bold sections identify that MultiTopology IS-IS is enabled. 

Dell#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
                                             !
                                             Dell#show isis database detail ISIS.00-00
                                             
                                             IS-IS Level-1 Link State Database
                                             LSPID    LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
                                             ISIS.00-00 * 0x0000002B 0x853B    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 15.1.1.0 255.255.255.0
                                             
                                             Metric: 10   IPv6 (MT-IPv6) 1511::/64
                                                Metric: 10      IPv6 (MT-IPv6) 2511::/64
                                                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
                                             Dell#

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