No, Pings from Remote to networks on RTA works but not from TS. RTA knows how to get back to Remote but how come it does not know how to get to TS. After all, Remote goes thru TS to get to BBR and hence to RTA. This was confusing to me. It is only after I configured the serial netw. b/w BBR and TS on router BBR for OSPF was I able to ping to networks on RTA from TS. Why ?? And this was without configuring the default-information originat cmd. on BBR to inject a default route to RTA.
The second part: that of being able to ping from RTA to Remote was only after I configed. the default-information originate cmd. on BBR. Why? Thank you for your help. >From: "Henry D." >Reply-To: "Henry D." >To: [EMAIL PROTECTED] >Subject: Re: Can ping from one side only!! why? [7:33527] >Date: Mon, 28 Jan 2002 20:49:37 -0500 > >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 _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=33536&t=33527 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
