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https://docs.ipinfusion.com/datacenter/index.html#page/OcNOS-DC_6.4.1/Layer3-Config/IS-IS-IPv4_Configurations.html#ww1045370

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Basic


Code Block
titlerouter isis
R2#show running-config router isis
!
router isis 1
 metric-style wide
 net 49.0000.0000.0001.00
!


loopback


Code Block
titleloopback
R2#show running-config interface lo
!
interface lo
 ip address 127.0.0.1/8
 ip address 10.1.1.1/32 secondary
 ipv6 address ::1/128
 ip router isis 1
!


network interface


Code Block
titleshow interface eth1
R2#show running-config interface eth1
!
interface eth1
 ip address 10.1.1.100/31
 ip router isis 1
!


Show commands
CLNS

Connectionless Network Protocol

CLNS is responsible for the connectionless delivery of data packets in the OSI network architecture.

CLNS is less used, and IP is the preferred Layer3 

neighbors

show clns neighbors

show clns is-neighbors


Code Block
titleshow ISIS
R2#show clns neighbors

Total number of L1 adjacencies: 1
Total number of L2 adjacencies: 1
Total number of adjacencies: 2
Tag 1:  VRF : default
System Id      Interface   SNPA                State  Holdtime  Type Protocol
0000.0000.0002 eth1        5000.0002.0001      Up     6         L1   IS-IS
                                               Up     6         L2   IS-IS


R2#show clns is-neighbors

Tag 1:  VRF : default
System Id      Interface   State  Type Priority  Circuit Id
0000.0000.0002 eth1        Up     L1   64        0000.0000.0002.02
                           Up     L2   64        0000.0000.0002.02
















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