Tip
This is the documentation for the 25.06 version. Looking for the documentation of the latest version? Have a look here.
Required Information¶
These tables contain general information about the two nodes involved in this IS-IS routing example. For the purposes of this example, they are called R1 and R2. R1 is located at the Example Company headquarters (“hq”) while R2 is at a remote office (“ro”).
Note
These tables contain information used for all examples, but some values only apply to one example, not all examples.
See also
For information on how to determine these values, see IS-IS Required Information.
R1 Environment¶
The following table contains information about the configuration on R1 at the Example Company headquarters and its role in IS-IS.
Item |
Value |
|---|---|
R1 VRF |
default |
R1 LAN IP Address |
10.2.0.1 |
R1 NET AFI |
49 |
R1 NET Area ID |
0001 |
R1 NET System ID |
0100.0200.0001 |
R1 NET NSEL |
00 |
R1 Active Interfaces |
CCLINK or gre0 |
R1 Passive Interface |
LAN |
R1 WAN IP Address |
203.0.113.2/24 |
R1 LAN Subnet |
10.2.0.0/24 |
R1 CCLINK IP Address |
10.127.0.1/30 |
R1 GRE MAC Address |
66:f8:04:df:01:01 |
R1 GRE IP Address |
10.127.0.5/30 |
R2 Environment¶
The following table contains information about the configuration on R2 at the Example Company remote office and its role in IS-IS.
Item |
Value |
|---|---|
R2 VRF |
default |
R2 LAN IP Address |
10.30.0.1 |
R2 NET AFI |
49 |
R2 NET Area ID |
0001 |
R2 NET System ID |
0100.3000.0001 |
R2 NET NSEL |
00 |
R2 Active Interfaces |
CCLINK or gre0 |
R2 Passive Interface |
LAN |
R2 WAN IP Address |
203.0.113.30/24 |
R2 LAN Subnet |
10.30.0.0/24 |
R2 CCLINK IP Address |
10.127.0.2/30 |
R2 GRE MAC Address |
66:f8:04:df:02:02 |
R2 GRE IP Address |
10.127.0.6/30 |
Choose a Configuration Style¶
The next step is to choose the IS-IS configuration method based on how R1 and R2 are connected: