what's with the CAT4 int fa0/0 it doesn't have the no switchport did you forget to post this command or you don't have it configured?
interface FastEthernet0/0 ip address 100.100.44.44 255.255.255.0 speed 100 full-duplex end I confirm this Marc Abel I just build it up and end up with the same think you experienced class-full boundary :P Loopback101 200.200.44.44 Loopback102 200.200.45.44 router rip version 2 passive-interface default no passive-interface Ethernet0/0 network 1.0.0.0 network 200.200.0.0 no auto-summary *Mar 24 15:57:25.243: RIP: build update entries - suppressing null update router rip version 2 passive-interface default no passive-interface Ethernet0/0 network 1.0.0.0 network 200.200.44.0 network 200.200.45.0 no auto-summary *Mar 24 15:58:25.587: RIP: sending v2 flash update to 224.0.0.9 via Ethernet0/0 (1.1.1.1) *Mar 24 15:58:25.587: RIP: build flash update entries *Mar 24 15:58:25.587: 200.200.44.0/24 via 0.0.0.0, metric 1, tag 0 *Mar 24 15:58:25.587: 200.200.45.0/24 via 0.0.0.0, metric 1, tag 0 and its working. 2011/3/24 marc abel <[email protected]> > I wasn't sure on this one so I labbed it up. It definitely is not > split horizon or enabling IP routing (that would have given him an > error when he tried to passive the interface). > > Marko nailed it, there are no routes to send. > > Looking at his config, it looks like there should be routes to send, I > mean he has loop backs in the 200.200.0.0 range which he is > advertising into RIP. Shouldn't these routes be advertised? I'm not > sure what subnet mask he used in his config but in my scenario I used > a /32 on the loopbacks. I then advertised in 200.200.0.0 and got the > same result as him. Null update. I then tried entering in > 200.200.44.44 under the router rip process. I immediately started > sending out 1 route. > > Now the interesting thing is that when I do show run I get: > > router rip > version 2 > passive-interface default > no passive-interface GigabitEthernet0/1 > network 100.0.0.0 > network 200.200.0.0 > network 200.200.44.0 > no auto-summary > > Notice it put it in as 200.200.44.0 even though the command I entered > is network 200.200.44.44 > > I still wasn't confident why advertising 200.200.0.0 didn't work but > now I was theorizing that you must advertise the network by it's > classful mask, even if you are running ip classless and no auto > summary. So to test this I removed the 200 network and could again see > I was sending null updates. This time I configured a 10.10.10.10 > 255.255.255.255 loopback. Then I went under the process and advertised > network 10.0.0.0 and it worked like a champ and this time you can see > it is under the process as 10.0.0.0 > > router rip > version 2 > passive-interface default > no passive-interface GigabitEthernet0/1 > network 10.0.0.0 > network 100.0.0.0 > no auto-summary > > This seems to confirm my suspicion that you must advertise the > classful mask, can anyone confirm this? I did a scan of the > documentation but didn't see it addressed specifically. > > Thank you, > > Marc > > On Wed, Mar 23, 2011 at 8:31 PM, Michael Smith <[email protected]> > wrote: > > > > Hello all, > > > > I definitely don't think it has anything to do with split horizon as it > sounds like they are using ethernet which is a broadcast medium. I also > don't think it is an error dealing with not enabling ip routing on the > switch. I really do think either you have passive-interface default enabled > or you don't have the correct network statement under the routing process. > Do a no passive-interface fax/x or enable the correct network under the > routing process. I hope this is helpful. Please correct me if I'm wrong! > > > > > > > > > > > >> From: [email protected] > >> Date: Wed, 23 Mar 2011 22:28:29 +0000 > >> To: [email protected] > >> Subject: Re: [OSL | CCIE_RS] [OSL|CCIE_RS] RIP updates - suppressing > null update > >> > >> Split Horizon, Disable > >> > >> > >> On Wed, 23 Mar 2011 21:43 , Rob Pool <[email protected]> wrote: > >> > I think you may need to enter the IP routing command on Cat4. > >> > > >> > Sent from my iPhone > >> > > >> > On Mar 23, 2011, at 5:07 PM, [email protected] wrote: > >> > > >> > Hi All, > >> > > >> > > >> > > >> > I am in the middle of the VoD and I stuck on RIP (I know...it should > be very easy). > >> > > >> > I use GNS and I have R4 fa0/0---fa0/0 Cat4 (Ether Switch Router), I > have basic IP connectivity between the routers and Cat4 is receiving the > updates from > >> > R4 but for some reason Cat4 cannot build its own RIP updates and send > it to R4. When I run debug ip rip on Cat4 I receive below message. > >> > > >> > > >> > *Mar 1 01:31:34.827: RIP: sending v2 update to 224.0.0.9 via > FastEthernet0/0 (100.100.44.44) > >> > *Mar 1 01:31:34.831: RIP: build update entries - suppressing null > update > >> > > >> > > >> > Please can you tell me what may be the reason of this? > >> > You can see the output from both routers below. > >> > > >> > ----------------------- > >> > > >> > R4 > >> > router rip > >> > version 2 > >> > passive-interface default > >> > no passive-interface FastEthernet0/0 > >> > network 100.0.0.0 > >> > no auto-summary > >> > R4# > >> > R4#show run int fa0/0 > >> > Building configuration... > >> > > >> > interface FastEthernet0/0 > >> > ip address 100.100.44.4 255.255.255.0 > >> > speed 100 > >> > full-duplex > >> > end > >> > > >> > R4#ping 100.100.44.44 > >> > > >> > Type escape sequence to abort. > >> > Sending 5, 100-byte ICMP Echos to 100.100.44.44, timeout is 2 seconds: > >> > !!!!! > >> > Success rate is 100 percent (5/5), round-trip min/avg/max = 4/24/72 ms > >> > > >> > > >> > ----------- > >> > > >> > Cat4 > >> > > >> > router rip > >> > version 2 > >> > passive-interface default > >> > no passive-interface FastEthernet0/0 > >> > network 100.0.0.0 > >> > network 200.200.0.0 > >> > no auto-summary > >> > Cat4# > >> > Cat4#show run int fa0/0 > >> > Building configuration... > >> > > >> > Current configuration : 97 bytes > >> > ! > >> > interface FastEthernet0/0 > >> > ip address 100.100.44.44 255.255.255.0 > >> > speed 100 > >> > full-duplex > >> > end > >> > > >> > Cat4#ping 100.100.44.4 > >> > > >> > Type escape sequence to abort. > >> > Sending 5, 100-byte ICMP Echos to 100.100.44.4, timeout is 2 seconds: > >> > !!!!! > >> > Success rate is 100 percent (5/5), round-trip min/avg/max = 4/31/64 ms > >> > Cat4# > >> > > >> > > >> > > >> > > >> > Loopback244 200.200.44.44 YES manual up > up > >> > Loopback245 200.200.45.44 YES manual up > up > >> > Loopback246 200.200.46.44 YES manual up > up > >> > Loopback247 200.200.47.44 YES manual up > up > >> > Loopback248 200.200.48.44 YES manual up > up > >> > > >> > > >> > Regards, > >> > Lukasz > >> > > >> > _______________________________________________ > >> > For more information regarding industry leading CCIE Lab training, > please visit http://www.ipexpert.com > >> > > >> > > >> > > >> > > >> > _______________________________________________ > >> > For more information regarding industry leading CCIE Lab training, > please visit http://www.ipexpert.com > >> > > >> _______________________________________________ > >> For more information regarding industry leading CCIE Lab training, > please visit www.ipexpert.com > > > > _______________________________________________ > > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
