I just remembered that I actually have an Intel router connected to a 7513 via a T1 that comes in on an MCT3 card, and the encapsulation is PPP. The mtu is 1500 bytes, as opposed to the 2044 that is configured on yours. Just wanted to let you know.
~-----Original Message----- ~From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]] ~Sent: Tuesday, January 15, 2002 2:01 PM ~To: [EMAIL PROTECTED] ~Subject: Re: Encapsulation Failed [7:31916] ~ ~ ~At 11:35 AM 1/15/02, Fraasch James wrote: ~>First, thanks for all the information. I forgot to mention ~that when I did ~>a Show ip int brief I saw up and up. Next, here is some pertinent ~>configuration information: ~> ~>Interface Serial 2/5 ~> mtu 2044 ~ ~That's kind of a strange MTU. What is the other router using? ~The routers ~exchange their MTUs in their database description packets. They have to ~match. ~ ~I guess you can't plug this router back in for testing, you ~said. But check ~again that this router's MTU isn't different from the others that are ~working. Also check its partner. Maybe it's different. ~ ~Check out the info here, plus there's a lot more about OSPF ~debugging on ~Cisco's Tech Notes: ~ ~http://www.cisco.com/warp/public/104/12.html ~ ~It's just a guess. My last guess (about bridging!) was totally ~false, but I ~think I'm closer here. ;-) Also, in doing some research I ~found one mention ~of "encapsulation failed" meaning a hardware problem!!? That ~could explain ~it too. I have seen serial interfaces go bad on Cisco routers in some ~pretty weird ways. ~ ~Good luck. Let us know what you find out please. It will be a ~good learning ~experience. Thanks. ~ ~Priscilla ~ ~ ~ ~> ip address 172.25.x.x 255.255.255.252 ~> encapsulation ppp ~> ipx network B051 ~> ipx update interval rip 300 ~> ipx update interval sap 300 ~> nrzi-encoding ~> ~>router ospf 200 ~> log-adjacency-changes ~> network 172.25.0.0 0.0.255.255 area 0.0.0.0 ~> ~>Sh ver is as follows: ~> ~>Version 12.0(7)XE1 ~> ~>IBM 6611 ~> ~>cisco 7204VXR (NPE225) processor with 122880K/8192K bytes of memory. ~>R527x CPU at 262Mhz, Implementation 40, Rev 10.0, 2048KB L2 Cache ~>4 slot VXR midplane, Version 2.3 ~> ~>This router was exchanging OSPF updates with a Cisco 1601 via ~a different ~>serial interface. I was also using PPP encapsulation on both ~interfaces ~>there and it worked fine. ~> ~>Finally, I have to say that we have this configuration in ~another location ~>with five serial ports connected to various IBM routers via ~T-1. All of the ~>serial ports have identical configurations as the serial port ~listed above. ~>Unfortunately, we are on a live network here and I cannot ~plug this router ~>back into the network to look at logs. I would have to take down a ~>courthouse and that has to be scheduled far in advance. Plus, ~they would not ~>like it if I took them down to do 'testing'! ~> ~>Thanks again for the information and keep it coming! ~________________________ ~ ~Priscilla Oppenheimer ~http://www.priscilla.com ~ ~ ~ ~ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=32050&t=31916 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
