Two switches, two trunks

[jcopley01]

Hi all,

I have a site which has two switches; a CE520 and a C2960.

There are two trunks between the two switches.

• one trunk with a native vlan 100 at both ends (voice vlan)
• the other trunk has native vlan 1 on the ce520 and 100 on the 2960; this is generating vlan mismatch errors

I wonder if whoever set it up envisaged having one trunk as native vlan 1 and the other as 100.  Would there be a benefit to this?  Is it entirely redundant having two trunks between just two switches?

thanks

justin

[Leo Laohoo]

Duplicate post.

Go HERE.

[rakeshvelagala]

Hi 

Just my Point of view.

Having different vlans is more of Vlan Hopping. Frankly, I did not see others using it.

Do you see any allowed list of vlans on the trunk? Can you please check what vlans are forwarding on the trunk.

By making a vlan as native,say if there is an untagged packet received it will be sent to that native vlan.

Entirely Redundant?

If clients are connected to this switch then no

If both the switches have uplinks to say DS and provided they are configured properly for say L3 redundancy say HSRP, then  if one of your DS goes down they will be redundant.

Thanks