From: Hashiru Aminu (hashng@gmail.com)
Date: Fri May 27 2005 - 12:11:52 GMT-3
does that means adjacency will for even with the passive interface , i'm
refering to all routing protocols here not only rip .
thanks in advance
Hashiru
----- Original Message -----
From: <thomas.rader@freesurf.ch>
To: <ccielab@groupstudy.com>
Sent: Friday, May 27, 2005 11:54 AM
Subject: RE: Issue with RIP & passive interface
> Hello,
>
> Ahh.. ok, now I get it!
>
> As Dave & Brian point out, I thought that "passive-interface" stops the
interface from participating in that routing process.
>
> However this is wrong, as it simply stops the interface from sending
updates out of that interface.
>
> Thanks to everyone who responded to this issue, Thomas
>
>
> -----Original Message-----
> From: Dave Bregman [mailto:DBregman@Houstons.com]
> Sent: Friday, May 27, 2005 8:11 PM
> To: thomas.rader@freesurf.ch; ccielab@groupstudy.com
> Subject: RE: Issue with RIP & passive interface
>
> Thomas,
>
> Read the DocCD on what passive-interface actually does. You're thinking
> to stops an interface from participating in the routing protocol.
> Actually, (in RIP's case), it stops routing updates from being sent out
> that interface. The 'network' command determines if the interface
> participates or not. If that interface's address is covered by a
> 'network' command, you'll see the route, no matter if you have
> 'passive-interface' on it or not. The 'passive-interface' command on
> Fa0/0 would prevent any other RIP router attached to Fa0/0's network
> from seeing ANY RIP routes. Like Kian said, to stop advertising the
> route out the S0/0 port, you'll need a distribute-list on that interface
> to filter the route out of the update.
>
> HTH,
>
> Dave Bregman
> CCIE #14626
>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> > Behalf Of thomas.rader@freesurf.ch
> > Sent: Friday, May 27, 2005 10:55 AM
> > To: ccielab@groupstudy.com
> > Subject: RE: Issue with RIP & passive interface
> >
> >
> > Hi Kian,
> >
> > Thanks, but I'm not sure I understand.
> >
> > Are you saying that just because there is still a route to
> > the 172.31.0.0 network, RIP will still send the
> > 172.31.10.0/24 update to R8, EVEN if I've told it not to
> > using passive interface on R7's Ethernet ?
> >
> > Somehow doesn't make sense.
> >
> > Thanks, Thomas
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> > Behalf Of Kian Wah Lai
> > Sent: Friday, May 27, 2005 7:38 PM
> > To: thomas.rader@freesurf.ch; ccielab@groupstudy.com
> > Subject: RE: Issue with RIP & passive interface
> >
> > Hi,
> >
> > Per CCO,
> > To disable sending routing updates on an interface, use the
> > passive-interface command in router configuration mode.
> > http://www.cisco.com/univercd/cc/td/doc/product/software/ios12
> > 2/122newft/122
> > tcr/122tip2r/ind_r/p2ftind1.htm#wp1019734
> >
> > In your case, you have enabled RIP on R7 FA0/0 with the
> > network command.
> > Routing for Networks:
> > 172.31.0.0
> >
> > Thus, you have a route to it. In order to remove it, use an outbound
> > distribute list on your R7's RIP process, filtering the 172.31.10.0/24
> > network.
> >
> > Regards,
> > Kian Wah
> > http://www.aces-star.com
> > Your Asia Pacific Rack Rental Source
> > Ace the CCIE Lab with it!
> >
> > -----Original Message-----
> > From: thomas.rader@freesurf.ch [mailto:thomas.rader@freesurf.ch]
> > Sent: Saturday, May 28, 2005 1:24 AM
> > To: ccielab@groupstudy.com
> > Subject: Issue with RIP & passive interface
> >
> > Hello group,
> >
> > I'm having an issue with RIP and passive interfaces.
> >
> > I hope someone can explain to me why this is not working.
> >
> >
> > I have two routers, R7 & R8 (connected via a serial crossover
> > cable) talking
> > RIPv2 to each other.
> > I don't want to advertise (via RIP) networks learned from
> > R7's FastEthernet
> > 0/0, so under R7's
> > RIP process, I add a passive statement for this interface.
> >
> > However, on R8 I'm still learning the 172.31.10.0/24 network,
> > and I can't
> > understand why ?
> >
> > Shouldn't the passive interface statement on R7, stop this
> > route from being
> > advertised to R8 ?
> >
> >
> > Here's the relevant config bits:
> >
> > R7:
> > interface FastEthernet0/0
> > ip address 172.31.10.2 255.255.255.0
> > !
> > router rip
> > version 2
> > passive-interface FastEthernet0/0
> > network 172.31.0.0
> > no auto-summary
> >
> >
> > R8:
> > router rip
> > version 2
> > network 172.31.0.0
> > network 210.8.8.0
> > no auto-summary
> >
> >
> > Why am I still learning 172.31.10.0 /24 on R8 ?
> >
> >
> > R1R8#show ip route
> > Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
> > D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> > N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> > E1 - OSPF external type 1, E2 - OSPF external type 2
> > i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia
> > - IS-IS inter
> > area
> > * - candidate default, U - per-user static route, o - ODR
> > P - periodic downloaded static route
> >
> > Gateway of last resort is not set
> >
> > 172.31.0.0/16 is variably subnetted, 3 subnets, 2 masks
> > C 172.31.7.0/28 is directly connected, Serial0/0
> > R 172.31.10.0/24 [120/1] via 172.31.7.1, 00:00:11, Serial0/0
> > C 172.31.8.0/24 is directly connected, FastEthernet0/0
> > 210.8.8.0/32 is subnetted, 1 subnets
> > C 210.8.8.8 is directly connected, Loopback0
> > R1R8#
> >
> >
> > This shows that I am not running RIP on the Ethernet
> > interface any longer
> > (passive)
> >
> > R1R7#show ip protocols
> > Routing Protocol is "ospf 100"
> > Outgoing update filter list for all interfaces is not set
> > Incoming update filter list for all interfaces is not set
> > Router ID 210.7.7.7
> > Number of areas in this router is 1. 1 normal 0 stub 0 nssa
> > Maximum path: 4
> > Routing for Networks:
> > 172.31.10.0 0.0.0.255 area 9
> > 210.7.7.7 0.0.0.0 area 9
> > Routing Information Sources:
> > Gateway Distance Last Update
> > 210.6.6.6 110 01:10:57
> > 210.7.7.7 110 01:10:57
> > 210.5.5.5 110 01:10:57
> > Distance: (default is 110)
> >
> > Routing Protocol is "rip"
> > Sending updates every 30 seconds, next due in 12 seconds
> > Invalid after 180 seconds, hold down 180, flushed after 240
> > Outgoing update filter list for all interfaces is not set
> > Incoming update filter list for all interfaces is not set
> > Redistributing: rip
> > Default version control: send version 2, receive version 2
> > Interface Send Recv Triggered RIP Key-chain
> > Serial0/0 2 2
> > Automatic network summarization is not in effect
> > Maximum path: 4
> > Routing for Networks:
> > 172.31.0.0
> > Passive Interface(s):
> > FastEthernet0/0
> > Routing Information Sources:
> > Gateway Distance Last Update
> > 172.31.7.2 120 00:00:11
> > Distance: (default is 120)
> >
> > R1R7#
> >
> >
> > Any help would be appreciated.
> >
> > Thanks, Thomas
> >
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