The MPLS-OPS Archive

Cell Relay Retreat>MPLS-OPS Archive>month:2001-Apr> msg00118



[Date Prev][Date Next][Thread Prev][Thread Next]  
  [Date Index][Thread Index][Author Index][Subject Index]

RE: [j-nsp] isis question

  • From: MPuras@solunet.com
  • Date: Wed, 25 Apr 2001 12:12:25 -0400
  • Resent-Date: Wed, 25 Apr 2001 13:29:24 -0400
  • To: chris.flores@onfiber.com, zjgu@ce-air.com, mpls-ops@mplsrc.com, juniper-nsp@puck.nether.net, aviva@juniper.net

#2.  

Depends - I believe by default L1/L2 is enabled on Juniper, therefore 2 adjacencies. Otherwise, if L1 only or if L2 only, then only a single adjacency.

 

Mario Puras
SoluNet Technical Support
Network Support Engineer
We don't make network products,
we make them Work!
Mailto:mpuras@solunet.com
888.SOLUNET (Canada) / 888.449.5766 (USA)

-----Original Message-----
From: Chris Flores [mailto:chris.flores@onfiber.com]
Sent: Wednesday, April 25, 2001 10:59 AM
To: 'zheng jiang gu'; mpls-ops@mplsrc.com; juniper-nsp@puck.nether.net; Aviva Garrett
Subject: RE: [j-nsp] isis question

My response is in-line. I hope it helps...
-----Original Message-----
From: zheng jiang gu [mailto:zjgu@ce-air.com]
Sent: Tuesday, April 24, 2001 9:15 PM
To: mpls-ops@mplsrc.com; juniper-nsp@puck.nether.net; Aviva Garrett
Subject: [j-nsp] isis question

hi all:
   When I study isis, I meet the problem:
1  Which network layer use to encapsulation isis-pdu?
Is it clnp or ip? 
 
CF: The OSI packets (or PDUs) are forwarded "as is" or transmitted directly over the underlying link layer without the need for encapsulation - per RFC 1195.
 
2  How many IS-IS adjacency between point-to-point routers?
 
CF: IIH (IS-IS Hello) PDUs are utilized to initialize and maintain adjacencies between neighbors. On a p2p link, one neighbor creates one adjacency. Do you have a more specific question that needs answering?
 
br
shawn