Tag Archive: vlan.dat

Apr 07

Where Cisco catalyst switch stores VLAN information?

The short answer is: VLANs 1-1005 are stores in valn.dat file stored in FLASH VLANs 1006-4094 are stored in running-config and moved to starup-config after configuration is saved. The full story is a bit more complicated and involves VTP as well. Here are details. VLAN or VTP configuration changes in CatOS are written to NVRAM …

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