I'm working as an intern at a company and one of my jobs is to work with a catalyst 4006. Before i'm allowed to do any major changes, i should try to save the config via TFTP. So i took a laptop, connected it to the console with a rollover and connected the me1-interface with a straight cable. I put up a TFTP server (solarwinds)on the laptop, it works from other computers. I changed the ip of the laptop so it would match the subnet which was used for the me1-interface. So far so good, because I could ping the switch from the laptop. Here's the problem: i can't ping from the switch to the laptop, therefore the TFTP won't work either.
What was the last state in which you could ping the switch? Get back to that state and then tell the switch the address that you have.
Keep in mind that you are on a VLAN that communicates on a certian subnet, so when you change your IP address you must be plugged into that VLAN in order to ping and use your TFTP server, or anything else for that matter.
While connected to the switch, issue the command "show ip interface brief", it will show you a list of interfaces and their IP addresses. Then issue the command "show vlan", this will tell you which ports are assigned to which VLAN. Now, plug yourself into an available port and assign an IP address in the subnet range of the particular VLAN, give a minute for spanning tree to "listen,learn,forward" and then try to ping the VLAN's IP address.
If this succeeds you can use your TFTP server.
Another note, BE CAREFUL!!! Networking gear is really fun stuff when it works correctly, it can make others quite grumpy when it isn't working correctly.
172.22.124.0 172.22.124.11 0xfffffe00 U 92 sc0
172.22.0.0 172.22.124.11 0xffff0000 UG 2 sc0
I cleared the IP ROUTE table, but that didn't change anything. By the way, the switch was used at another place, brought here and now it's still located in a testing enviroment, so there is no primary gateway attached, just a single PC.
I hope this makes the situation easier to understand.
Thanks for this excellent tip. I asked the admin to remove the firewall from that laptop and suddenly my problem was solved ! Those things make a monday morning feel like a friday evening :)
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