4506 ws-4448G-T<--->glc-t 3560,1. on 4506, show cdp nei ，can find 3560,but 3560 can't find 4506.2. no bpdu exchange, both 3560 and 4506 are root bridge.3.IP can be transfered without any problem.I try 1000G crossover UTP instead of straight-through...

cat 4506 1000base-T <--> glc-t SFP cat 3560-48t,two switch connect by straight-through cat 5e, but form one-way link.at 4506,"show cdp nei" can find 3560, but 3560 can't find 4506, and aslo VTP corrupted. I changed straight-through cat 5e to 1000T c...

some ports of cat 2950 experiences transitorily down&up, but no error message, possible cause?following is show logging and show run /version attachedSwitch-355012g-5#sh logging.Sep 22 08:36:57: %LINEPROTO-CLUSTER_MEMBER_5-5-UPDOWN: Line protocol on...

Hi, the router cant not boot normally. It give some error message. i change register to 0x2100 enter rommon, there are some crashfile stored in flash. how can i get those crash file from the router. (the router only work in rommon). thanks BRs

Hi all, two router (hsrp ) with two line connect to center (different metric,through different router),one of them have a isdn bri use dialer watch as backup . the problem is when one of the primary link down,even anther line is up, the isdn come...