Displaying IS-IS LSDB and adjacencies
Use the following procedure to display the IS-IS LSDB and adjacencies.
Procedure
Example
Switch:1# show isis lsdb
================================================================================
ISIS LSDB
================================================================================
LSP ID LEVEL LIFETIME SEQNUM CHKSUM HOST-NAME
--------------------------------------------------------------------------------
0014.c7e1.33df.00-00 1 545 0xb1 0xed28 NewYork
0016.ca23.73df.00-00 1 1119 0x9f 0x9c9d Switch-Lab2
0018.b0bb.b3df.00-00 1 708 0xb9 0xcb1a Switch-Lab1
--------------------------------------------------------------------------------
Level-1 : 3 out of 3 Total Num of LSP Entries
Level-2 : 0 out of 0 Total Num of LSP Entries
Switch:1# show isis adjacencies
====================================================================================================
ISIS Adjacencies
====================================================================================================
INTERFACE L STATE UPTIME PRI HOLDTIME SYSID HOST-NAME STATUS
----------------------------------------------------------------------------------------------------
Port1/11 1 UP 05:02:18 127 22 beb0.0000.7204 Switch-Lab1 ACTIVE
Port1/12 1 UP 05:00:18 127 25 beb0.0000.7204 Switch-Lab2 BACKUP
Port1/16 1 UP 05:00:25 127 24 beb0.0000.7204 Switch-Lab3 BACKUP
----------------------------------------------------------------------------------------------------
3 out of 3 interfaces have formed an adjacency
----------------------------------------------------------------------------------------------------
Switch:1> show isis lsdb detail
================================================================================
ISIS LSDB (DETAIL)
================================================================================
--------------------------------------------------------------------------------
Level-1 LspID: 0001.bcb0.0003.00-001 SeqNum: 0x00000522 Lifetime: 1144
Chksum: 0x32f7 PDU Length: 312
Host_name: C0
Attributes: IS-Type 1
TLV:1 Area Addresses: 1
c1.3000.0000.00
TLV:22 Extended IS reachability:
Adjacencies: 7
TE Neighbors: 7
0000.beb1.0007.01 (Switch0) Metric:10
SPBM Sub TLV:
port id: 640 num_port 1
Metric: 10
0000.beb1.00b1.01 (Switch1) Metric:10
SPBM Sub TLV:
port id: 643 num_port 1
Metric: 10
0000.bcb1.0004.01 (C1) Metric:10
SPBM Sub TLV:
port id: 6144 num_port 1
Metric: 10
0000.beb1.00ca.01 (Switch2) Metric:10
SPBM Sub TLV:
port id: 6156 num_port 1
Metric: 10
0000.beb1.00a5.01 (VSS0) Metric:10
SPBM Sub TLV:
port id: 651 num_port 1
Metric: 10
0000.beb1.00b2.01 (VSS1) Metric:10
SPBM Sub TLV:
port id: 645 num_port 1
Metric: 10
0000.beb1.0008.01 (Switch1) Metric:10
SPBM Sub TLV:
port id: 652 num_port 1
Metric: 10
TLV:129 Protocol Supported: SPBM
TLV:137 Host_name: C0#
TLV:144 SUB-TLV 1 SPBM INSTANCE:
Instance: 0
bridge_pri: 0
OUI: 00-33-33
num of trees: 2
vid tuple : u-bit 1 m-bit 1 ect-alg 0x80c201 base vid 1000
vid tuple : u-bit 1 m-bit 1 ect-alg 0x80c202 base vid 1001
TLV:144 SUB-TLV 3 ISID:
Instance: 0
Metric: 0
B-MAC: 00-00-bc-b1-00-03
BVID:1000
Number of ISID's:8
3001(Both),3002(Rx),3003(Both),3004(Rx),4001(Both),4002(
Rx),4003(Both),4004(Rx)
Instance: 0
Metric: 0
B-MAC: 00-00-bc-b1-00-03
--More-- (q = quit)
Variable Definitions
The following table defines parameters for the show isis lsdb command.
|
Variable |
Value |
|---|---|
|
detail |
Displays detailed information. |
|
level {l1|l2|l12}] |
Displays the LSDB for the specified level: l1, l2, or l12. |
|
local |
Displays IS-IS local LSDB information. |
|
sysid <xxxx.xxxx.xxxx> |
Displays the LSDB for the specified system ID. |
|
lspid <xxxx.xxxx.xxxx.xx-xx> |
Displays the LSDB for the specified LSP ID. |
|
tlv <1–236> |
Displays the LSDB by TLV type. |
The following table defines parameters for the clear isis command.
|
Variable |
Value |
|---|---|
|
lsdb |
Clears the IS-IS Link State Database (LSDB). The command clears learned LSPs only. The command does not clear local generated LSPs. As soon as the platform clears the LSDB the LSP synchronization process starts immediately and the LSDB synchronizes with its neighbors. |
Job Aid
The following sections describe the fields in the outputs for the IS-IS LSDB and adjacencies show commands.
show isis lsdb
The following table describes the fields in the output for the show isis lsdb command.
|
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. |
|
CHKSUM |
Indicates the LSP checksum. This is an error checking mechanism used to verify the validity of the IP packet. |
|
HOST-NAME |
Indicates the hostname listed in the LSP. If the host name is not configured, then the system name is displayed. |
show isis adjacencies
The following table describes the fields in the output for the show isis adjacencies command.
|
Parameter |
Description |
|---|---|
|
INTERFACE |
Indicates the interface port, MLT, or logical interface on which IS-IS exists. |
|
L |
Indicates the level of the adjacent router. |
|
STATE |
Indicates the state of IS-IS on the interface (enabled [UP] or disabled [DOWN]). The state is non-configurable. |
|
UPTIME |
Indicates the length of time the adjacency has been up in ddd hh:mm:ss format. |
|
PRI |
Indicates the priority of the neighboring Intermediate System for becoming the Designated Intermediate System (DIS). |
|
HOLDTIME |
Indicates the calculated hold time for the Hello (hello multiplier x hello interval); if the route is determined to be a designated router, then the product is divided by 3. |
|
SYSID |
Indicates the adjacent system ID of the router. |
|
HOST-NAME |
Indicates the hostname listed in the LSP. If the host name is not configured, then the system name is displayed. |
|
STATUS |
Indicates if the adjacency is active. |