this one has been kicking around in my thoughts for a couple of days. Hope this discussion is still relevant.
In looking through CCO ( configuration guide - http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/dial ts_c/dtsprt4/dcdppp.htm#19282 watch the wrap ) it would appear that with regard to the multilink operation, that the end points of the link are the virtual-template, and not the physical interfaces. I tested this by placing ip addresses on the physical interfaces, saving my configuration, reloading the routers ( to eliminate artifact after all the screwing around I've been doing to get this to work, and then to develop a checklist for PPP multilink. ) In any case, I issued a debug ip packet, and the output shows an encapsulation failed at layer 2. I believe you discovered this for yourself, when you report that upon removing ppp multilink, you have no problem pinging on the physical interface. check the following output: 00:07:20: IP: s=192.168.1.7 (local), d=192.168.1.8 (Serial1), len 100, sending 00:07:20: IP: s=192.168.1.7 (local), d=192.168.1.8 (Serial1), len 100, encapsula tion failed. Success rate is 0 percent (0/5) so the answer to your question is cronkite - because that's the way it works! It is probably more helpful to suggest that ppp multilink creates a single layer two link, and Cisco has chosen to use the virtual-template as the Layer 3 interface to that Layer 2 circuit. HTH Chuck ""Cisco Nuts"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hello, > I have 2 routers, Remote and Central connected via 2 serial intfs. I have > ppp pap auth. and ppp multilink configed. on these intfs. This creates a > virtual intf. Virtual-Access1 intf. which allows me to learn about networks > on Remote and Central. I can ping successfully to these networks but when I > ping the serial ip itself of the other side, it fails. Why would the ppp > multilink cmd. prevent me from pinging the serial ip itself but allow me to > ping to networks that is actually being learned through these serial intfs? > Obviously, when I remove the ppp multilink cmd. pings work fine for both > serials! > Output: > Remote#ping 4.4.4.2 > Type escape sequence to abort. > Sending 5, 100-byte ICMP Echos to 4.4.4.2, timeout is 2 seconds: > ..... > Success rate is 0 percent (0/5) > > Remote#ping 21.21.21.1 > Type escape sequence to abort. > Sending 5, 100-byte ICMP Echos to 21.21.21.1, timeout is 2 seconds: > !!!!! > Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms > > With ppp multilink cmd. removed from the serials: > > Remote#ping 4.4.4.2 > Type escape sequence to abort. > Sending 5, 100-byte ICMP Echos to 4.4.4.2, timeout is 2 seconds: > !!!!! > Success rate is 100 percent (5/5), round-trip min/avg/max = 36/37/40 ms > > Any ideas?? Thank you. > > > > > > > > _________________________________________________________________ > Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=36766&t=36465 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
