In order to reset the VLAN information to the factory defaults, delete the vlan.dat file from the Flash or NVRAM and reload the switch.
On the Cisco Catalyst 6500/6000 Series switches running Cisco IOS Software, the vlan.dat file is stored in const_nvram. On the Cisco Catalyst 4500/4000 Series switches running Cisco IOS Software, the vlan.dat file is stored in cat4000_flash:. On the Cisco Catalyst 2940, 2950/2955, 2970, 3550, 3550, 3560, 3570, and 2900XL/3500XL fixed configuration switches, the vlan.dat file is stored in flash:.
In order to reset the Virtual Trunking Protocol (VTP) information when a switch is added to an existing VTP domain, the best option is to change the VTP mode to transparent. To do this, issue the vtp mode transparent command. This changes the config revision number back to 0 and when the current VTP server has a higher revision number then this, the device is updated with the latest VTP information.
we have a Nexus C93180YC-FX Switch, when I ssh to it, I directly get Privileged EXEC mode #, didn't see User EXEC mode ">". there is no AAA, and I enabled secret. who can help me with this issue ? thanks.
I accidentally deleted some of the startup images from the flash on a Cisco Catalyst 3650. I am going through the steps of transferring a new ios image using a serial cable and extraputty, however when I get to the transfer portion, the switch begins the ...
Hello all,Trying to figure out if the network module port LED lights on a C3850 can go bad.. The mystery is:On our C3850's 2 Te network module (NM) ports 3 & 4, we've each an SFP-10G-SR with a singlemode fiber to one each of our 2 distribution switche...
Hello all, hoping someone might have some thoughts regarding this error message. As you can see from the error, its being generated by "l2tp-session". We have a pseudowire l2tp-session over a DMVPN tunnel. I am not finding much information on the error. M...