/32 advertisement with Rip and PPP interface:
If that fails, the one-fingered salute will at least make YOU feel better. ![]()
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From: Todd, Douglas M. [mailto:DTODD@PARTNERS.ORG] Sent: Friday, February 29, 2008 11:41 AM To: smorris@ipexpert.com; ccielab@groupstudy.com Subject: RE: /32 advertisement with Rip and PPP interface:
Well - The command has been there for a few days now, and no result. I’ll do a few 3 finger salutes to the routers and see if that clears the problem. Thanks. DMT
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From: Scott Morris [mailto:smorris@ipexpert.com] Sent: Friday, February 29, 2008 9:00 AM To: Todd, Douglas M.; ccielab@groupstudy.com Subject: RE: /32 advertisement with Rip and PPP interface:
From RIP’s standpoint, it’d take 4 minutes to flush a route after it goes away…. From PPP’s standpoint, that route will still exist even after the “no peer neighbor-route” command is issued until the link resets. The neighbor route is part of the PPP negotiation phase, so if you’ve already negotiated/exchanged it, it’s not going to just magically go away. Try a shut/no shut and see what happens. HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al. CCSI/JNCI-M/JNCI-ER VP - Technical Training - IPexpert, Inc. IPexpert Sr. Technical Instructor
A Cisco Learning Partner - We Accept Learning Credits!
smorris@ipexpert.com
Telephone: +1.810.326.1444 Fax: +1.810.454.0130 http://www.ipexpert.com
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From: Todd, Douglas M. [mailto:DTODD@PARTNERS.ORG] Sent: Friday, February 29, 2008 6:42 AM To: smorris@ipexpert.com; ccielab@groupstudy.com Subject: RE: /32 advertisement with Rip and PPP interface:
Here was the initial configuration for this interface - I have the no peer neighbor-route. The route is still advertised. Here is the configuration: interface Serial1/1 ip address 172.16.35.5 255.255.255.0 ip pim dense-mode encapsulation ppp ip summary-address rip 172.16.35.0 255.255.255.0 ipv6 address FEC0::35:5/125 ipv6 rip rip enable no peer neighbor-route
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From: Scott Morris [mailto:smorris@ipexpert.com] Sent: Thu 2/28/2008 10:54 PM To: Todd, Douglas M.; ccielab@groupstudy.com Subject: RE: /32 advertisement with Rip and PPP interface:
PPP interfaces automatically inject a “peer neighbor-route”. This was a feature introduced a long, long time ago (in a galaxy far, far away known as Modem-Land) where we had lots of “ip unnumbered” interfaces and therefore reachability problems without a plethora of static routes.
You can get rid of it by putting “no peer neighbor-route” under the PPP interface.
http://www.cisco.com/en/US/docs/ios/12_0/dial/configuration/guide/dcppp.html #wp4246
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al. CCSI/JNCI-M/JNCI-ER VP - Technical Training - IPexpert, Inc. IPexpert Sr. Technical Instructor
A Cisco Learning Partner - We Accept Learning Credits!
smorris@ipexpert.com
Telephone: +1.810.326.1444 Fax: +1.810.454.0130 http://www.ipexpert.com
—–Original Message—– From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Todd, Douglas M. Sent: Thursday, February 28, 2008 10:07 PM To: ccielab@groupstudy.com Subject: /32 advertisement with Rip and PPP interface:
Hey All:
Can someone help me understand why the /32 is being advertised from this router? Config and route are below?? Ideas?
Routing entry for 172.16.35.5/32 Known via “rip”, distance 180, metric 1 Redistributing via rip, eigrp 100 Advertised by eigrp 100 metric 1 2000 255 1 1500 route-map rip-eigrp Last update from 172.16.234.3 on Serial1/0.234, 00:00:02 ago Routing Descriptor Blocks: * 172.16.234.3, from 172.16.234.3, 00:00:02 ago, via Serial1/0.234 Route metric is 1, traffic share count is 1
interface Serial1/1 ip address 172.16.35.5 255.255.255.0 ip pim dense-mode encapsulation ppp ip summary-address rip 172.16.35.0 255.255.255.0 ipv6 address FEC0::35:5/125 ipv6 rip rip enable no peer neighbor-route
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