10-03-2008 02:24 AM - edited 03-06-2019 01:44 AM
The problem has occurred when it had restarted several times a machine connected to a port in one of a switches and suddenly has stopped answering PING this machine(although is up, recognizes MAC, etc). The same has already happened in a couple of occasions and has been solved by restarting the switch, but now we can not do it. Make a shutdown / no shutdown of the port does not solve the problem.
The switch is a WS-C3560-48TS and the version you have installed a 12.2 (35) SE5.
Anybody knows that it can be happening?
10-03-2008 02:38 AM
What is causing the port to block? Have you tried to configure the err-disable settings in the switch?
HTH>
10-03-2008 03:19 AM
that's what I do not know ... The port is connected to machine restarts several times, are scheduled reboots, and at the end apparently the port is fine, up / up, shows the MAC for this port, but we can not do a ping to that machine, and if we put a PC on your site neither works... the port is "blocked"...
We haven't configured err-disable, but I do not see that it can solve here.
10-03-2008 03:28 AM
When you cannot ping the machine - can the maching ping the mgmnt IP address of the switch?
Can it ping the default gateway of the layer 3 routing device for that IP Subnet?
10-03-2008 03:45 AM
Yes, if we tried to do the ping from both sides, from the pc, and from the network.
10-03-2008 07:00 AM
Did it work?
10-06-2008 06:55 AM
No, it does not work. That is why I say that although it seems that this up / up does not work, it is "silly"
10-06-2008 06:58 AM
then you could have 1 on the below 3 things or all of them:-
1) Faulty cable
2) Faulty switch port
3) Faulty server NIC.
HTH>
10-14-2008 09:45 AM
you may check if this interface is associated correctly to a VLAN and it is receiving a dynamic IP from a DHCP server. also, make sure your router's LAN interface (connected to the switch) has the ip helper-address
10-08-2008 01:44 AM
try unblocking port usin cisco network assistent. This might help u out.
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