In your scenario, packet originates on router Remote with destination of router RTA - with IP address of the network connecting RTA to BBR. Remote knows to use TS because of the RIP information and sends packet to TS, TS knows how to get there because it has statics so it forwards the packet to BBR, BBR is directly connected to the network so it knows where RTA is and forwards it out to RTA. RTA gets the packets but it doesn't know where Remote router is so the packet gets dropped. Now, if Remote was for example pinging IP of BBR on the same subnet as RTA this would work because BBR knows thru static default how to get back to Remote. In case of RTA, it has no default route information even though you used redistribution under OSPF. The problem is that OSPF will not start advertising default route unless specifically configured to do so with "default-information originate" command.
The same goes when trying from TS router, RTA has no information on how to get back to the network you have configured between BBR and TS. Hope it helps. ""Cisco Nuts"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hello, > I have router RTA connected to router BBR running ospf 100. Router BBR has a > static route of 0.0.0.0 to router TS. Router BBR also has a redistribute > static command under ospf. > > Router TS is connected to router Remote both running Rip. Static routes are > configured on TS for RTA's and BBR's networks. This is redistributed under > Rip with a default metric of 2. Also, the router TS has a defult-network > command to inject a default route to router Remote. > > On router Remote, I see the networks of routers RTA and BBR discovered via > RIP > R 4.0.0.0/8 [120/2] via 10.10.1.2, 00:00:18, Ethernet0 > R 5.0.0.0/8 [120/2] via 10.10.1.2, 00:00:18, Ethernet0 > > I can ping these addresses successfully. > > But I cannot ping these same addresses from the TS. Why?? The packet from > Remote goes thru TS to get to routers RTA and BBR. Then how come I cannot > ping these same addresses from TS?? Also, I cannot ping any networks on > Remote from RTA > > The solution I came up with was: > 1.) Configure a default-information originate command on the router BBR > which then injects a default route on RTA which allows me to ping networks > on router Remote. This works! > > 2.) Configure on router BBR the serial network address between router BBR > and TS under OSPF. This allows me to ping the networks of RTA from the TS. > This works! > > So the question is more of a packet flow from router Remote from where pings > work to RTA and BBR but not from router TS. > > Can someone help me understand this? > Thank you. > > > > > > > > _________________________________________________________________ > Send and receive Hotmail on your mobile device: http://mobile.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=33529&t=33527 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
