Training and Certification

Hi All,

Can anyone explain about iso addresing. For instance,

Router 1 and Router 2 are directly connected and in the same area. According to following info, Which configuration must be set on R2 to form a Level1 IS-IS adjacency with R1?

Is iso address on the router 2 is 39.0001.3414.0010.0250.0000.0056.00 or

39.0001.3415.0010.0250.0000.0056.0?

R1:

lo0:10.250.0.55

Instance:Master

Router ID:10.250.0.55

Hostname:R1

Sysid:0250.0000.0055

Areaid:39.0001.3414.0010

......

........

R2:

lo0:10.250.0.46

......

........

Your area id should be same in order to have L1 ISIS adjacency.

For a router to support IS-IS, you must configure an ISO network entity title (NET) address on one of the router’s interfaces, preferably the loopback interface

https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/iso-address.html

For instance, R1 is connected to R2.

This is config will maintain only Level 1 adjancey between the two.

Router1
set interfaces fe-1/2/0 unit 0 description to-R2
set interfaces fe-1/2/0 unit 0 family inet address XX.0.0.X/30
set interfaces fe-1/2/0 unit 0 family iso
set interfaces lo0 unit 0 family inet address X.X.X.X/32
set interfaces lo0 unit 0 family iso address 49.002.0192.0168.0006.00
set protocols isis interface fe-1/2/0.0 level 2 disable
set protocols isis interface lo0.0 level 2 disable

Router2
set interfaces fe-1/2/0 unit 0 description to-R1
set interfaces fe-1/2/0 unit 0 family inet address XX.0.0.X/30
set interfaces fe-1/2/0 unit 0 family iso
set interfaces lo0 unit 0 family inet address X.X.X.X/32
set interfaces lo0 unit 0 family iso address 49.002.0192.0168.0007.00
set protocols isis interface fe-1/2/0.0 level 2 disable
set protocols isis interface lo0.0 level 2 disable