We have Cisco 827 router running PPoE for ADSL connection which is working fine, but one problem is that whenever the ISP is down or does something, then comes back, the 827 cannot pick up the connection automatically unless you reboot it.
Is there a command to check the line, then reboot the router? Does it depend on dynamic ip or static ip you are using?
How often does this occur? What I am thinking is, you should setup some sort of syslogging, or if you have a ton of unused ram in the box you can set your "logging buffered X debug"(x=some really high number) and run some debugs:
debug atm error
debug vpdn pppoe-events
debug ppp nego
This might give us some clue as to where the problem is happening. Then before rebooting the router, capture a "sh tech" and look for any wierd figures for input/output packets on any interface, or any other wierdness.
Are you running NAT? If so try a "clear ip nat trans *" before you reload. Also try a "clear int dialerX"(is that what you have terminating the connection?) to see if that helps. You may have to clear the atm interface...who knows...
Use a show run and see what IOS version you are running. In order to overcome this one we have found it safer to use c820-y6-mz.122-2.XI.bin. If you try an even more up to date version such as XK and above, you'll find that any static routes, including the default, that point to the Dialer interface won't actually work! We've raised a case and Cisco are on to it. This version will retrain as it should do.
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...