We have an issue with a cisco 857 adsl router used for vpn rebooting itself.
The hardware and ac adapter have been swapped out and deployed elsewhere and work fine. Telco has checked adsl line and see no errors. Only indication from router is that reset is due to Power. On the site affected the router's power is fed via a 4-way distribution block which feeds other equipment monitor/pc which do not see any power issues.
[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...