Cisco Nuts wrote: > > That's the exact reason why I asked on Eigrp and Isis for > link-state? :-) > Do you have any ideas??
What problem are you trying to solve? I'm being dense perhaps, but I think you will get a better answer if you explain the problem rather than a potential solution. I know a consultant whose mantra is "tell me what, not how!" ;-) Snapshot routing is a solution for reducing the number of routing updates that are sent. It works for protocols like RIP, IGRP, and RTMP that send their entire routing tables (after split horizon) frequently, like every 30 seconds for RIP, every 90 seconds for IGRP, and every 10 seconds for RTMP. Neither EIGRP nor IS-IS do this. Although EIGRP uses vectors with distance information, its updates are nonperiodic, partial, and bounded. Nonperiodic means that updates are sent only when a metric changes rather than at regular intervals. Partial means that updates include only routes that have changed, not every entry in the routing table. Bounded means that updates are sent only to affected routers. These behaviors mean that EIGRP uses very little bandwidth. However, it does send incessant Hellos (every 5 seconds) and that is probably what concerns you. I don't know IS-IS, but EIGRP learns about its neighbors with Hellos. If you want to reduce traffic and keep a DDR line from coming up just to send Hellos, you could make the DDR link a passive interface. Under the EIGRP commands, use the "passive-interface dialer0" command or whatever is appropriate for your config. Then use a static route to make sure the link does come up when you need to send to the other side. You could still use EIGRP on either side but make the DDR link passive. That's one way to skin the cat anyway! ;-) _______________________________ Priscilla Oppenheimer www.troubleshootingnetworks.com www.priscilla.com > > > > > > > >From: "Scott Davis" > >Reply-To: "Scott Davis" > >To: [EMAIL PROTECTED] > >Subject: RE: Snapshot routing for Eigrp? [7:56102] > >Date: Wed, 23 Oct 2002 01:25:59 GMT > > > >From CCO, Snapshot Routing : FAQ > > > >Snapshot allows the use of all "distance vector" routing > protocols over DDR > >lines. They include: > > > >RIP and IGRP for IP > >RTMP for Appletalk > >RIP and SAP for IPX > >RTP for Vines > > > >-----Original Message----- > >From: [EMAIL PROTECTED] [mailto:nobody@;groupstudy.com]On > Behalf Of > >Cisco Nuts > >Sent: Tuesday, October 22, 2002 3:20 PM > >To: [EMAIL PROTECTED] > >Subject: Snapshot routing for Eigrp? [7:56102] > > > > > >Hello, > >Can snapshot routing be used for Eigrp? I don't see any > documentation on > >CCO > >regarding this. They refer to primarily RIP, IGRP and IPX RIP. > What can be > >used for Eigrp across a DDR link? > > > >Also, I am trying to find out for ISIS? CCO has the > ospf-demand circuit for > >Ospf but nothing for ISIS? > > > >Can someone advise? > > > >Thank you. > > > >Sincerely. > > > > > > > > > >_________________________________________________________________ > >Get faster connections -- switch to MSN Internet Access! > >http://resourcecenter.msn.com/access/plans/default.asp > _________________________________________________________________ > Get a speedy connection with MSN Broadband. Join now! > http://resourcecenter.msn.com/access/plans/freeactivation.asp > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=56175&t=56102 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
