cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
280
Views
5
Helpful
1
Replies

ISIS point to point network type

Ratheesh mv
Beginner
Beginner

ISIS-DOUBT.PNG

I read in some documents that point-point network type always forms only level-2 ISIS neigborship. But when I tested in lab I saw only level-1  neigborship even though R5 and R6 have capability of level 1 and level 2 .Please find the output below. I would like to know that the right behavior of ISIS over point to point .

 

R5#sh isis neighbors

System Id Type Interface IP Address State Hold time Circuit Id
Router L1 Et0/0 192.168.10.6 UP 58 00

 

R6#sh isis neighbors

System Id Type Interface IP Address State Hold time Circuit Id
R5 L1 Et0/0 192.168.10.5 UP 22 00
R6#

 

R5#sh clns interface Et0/0 | include Circuit
Circuit Type: level-1-2
Level-1 Metric: 10, Priority: 64, Circuit ID: R6.00
Level-2 Metric: 10, Priority: 64, Circuit ID: R6.00

 

R6#sh clns interface Et0/0 | include Circuit
Circuit Type: level-1-2
Level-1 Metric: 10, Priority: 64, Circuit ID: R6.00
R6#


Thanks in advance 

 

 

1 ACCEPTED SOLUTION

Accepted Solutions

Harold Ritter
Cisco Employee
Cisco Employee

P2P and isis levels are 2 different things. The adjacency should come up as L1, L2 or L1L2, depending on the configuration. In your case the adjacency comes up as L1 only because R6 is configure as L1 only (is-type level-1).

 

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

View solution in original post

1 REPLY 1

Harold Ritter
Cisco Employee
Cisco Employee

P2P and isis levels are 2 different things. The adjacency should come up as L1, L2 or L1L2, depending on the configuration. In your case the adjacency comes up as L1 only because R6 is configure as L1 only (is-type level-1).

 

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: