I have only just got into our Catalyst 4000 after being here a few months. There is of course no documentation or anything. I logged in and printed a sh config and sh interface. Then proceeded to nose around and have a look.
I noticed that one of the three interfaces shown was up and the other two down.
I tried to bring both of the interfaces up and only one came up. The other interface came up with the error: Unable to bring sc0 up due to IP config conflict with me1.
Now we cannot route traffic to or from the other end of the VLAN.
I have gone through the router and firewall and there is nothing wrong with them. Also, they were not touched and the switch was.
I know that a write mem has NOT been run since then, is it safe to reload the switch and go back to the last config?
Does anyone have any ideas as any other option I have left. I do not want to reload in case the pevious admin left a crucial change in RAM.
We have about 30 users unable to work until this is sorted.
The first to mention is that the CatOS does not work in the same way as IOS. When you make a change, it goes into both the running configuration and the NVRAM :-( so you cannot backtrack by reloading.
Secondly, the interfaces sc0 me0 and sl0 are essentially management interfaces. sc0 represents inband management (i.e. via the working ports), while me0 represents out-of-band management via the special Ethernet port on the Supervisor card. I think sl0 is SLIP, but I have never used it. The switch does not allow the same IP address on more than one interface.
I'm not sure what you mean by "we cannot route traffic to or from the other end of the VLAN". You seem to have only one VLAN on this switch: the default VLAN 1. (You can ignore the 100x VLANs unless you are running something esoteric like FDDI or TR.)
The best thing you could try, is to remove the IP address from me0 (unless you are going to use the management ethernet on the supervisor), then you will be able to bring up sc0 again. Or you could just do:
set interface me0 down
set interface sc0 up
So much for the management, but I still do not understand why your users cannot work; I would need to see your config.
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