Get VLAN Information.

auos

Hi,
I have SW-A connect as below

SW-B

---

SW-A

---

SW-C

From SW-A how I know this switch get VLAN information from how.


BR,
Auos.

luke_bibby

I actually don't understand your question but I'm assuming you have VLANs configured on switches SW-B and SW-C which you want to propogate to SW-A. You need to configure VTP on the switches if you want to propogate VLAN information between the switches - read this:
Configuring VLAN Trunk Protocol (VTP) - Cisco Systems

If your question was to identify whether VLANs have successfully been learned from other switches then check the VLAN database using something like show vlan brief