How to JUNK NATIVE VLAN

[Almin]

IS there a way of creating a junk for a native vlan on a cisco switch?

Thanks

 

[unclerico]

Are you asking if you can use a different native VLAN other than 1?? If so, then absolutely. It is a best practice to do so.

I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)

 

[vipergg]

On the port "switchport native vlan X " . Any unused vlan can be used .

 

[Quadratic]

At this point I would go so far as to say that it's best practice to not use vlan 1 at all, for anything.

CCNP, CCDP, CCIP
Core Network Planner, ISP

 

[bnorton916]

Why is it best practice to not use VLAN 1 at all?

 

[VinceWhirlwind]

Superstition, mostly.

Network components out-of-the-box default to VLAN1, so in a properly designed LAN, you can tell anything that doesn't belong because it's in VLAN1.

Or, you may have other ways to keep everything under control.

If you ever get to setup a LAN on a greenfields site, it's easy to exclude VLAN 1 from your design.
Otherwise, when working on network upgrades to existing networks, it is virtually impossible to wean everybody off VLAN1, so just make sure you always try to use sensible new subnets with non-VLAN1.

 

[ADB100]

Superstition, mostly.

Its bad practise... VLAN 1 has special significance in Cisco switching as it is used for control traffic regardless of whether its allowed on a trunk or not. VTP, PAgP & CDP will all be transmitted on a trunk using a VLAN Tag of 1.

VLAN 1 should never be used for user traffic. It should also be pruned from all trunks unless you are interoperating with MST & PVST+ (typically with other vendors switches).

http://www.cisco.com/en/US/products/hw/switches/ps708/products_white_paper09186a008013159f.shtml

http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a0080094713.shtml

In this day and age there is no need to have big layer-2 networks. IP was designed to be routed - so route it.

Andy

 

[VinceWhirlwind]

It seemed to me that the "route it" push from Cisco was mostly a response to their hardware's failure to provide the feature of distributed "trunks" (Link aggregation), like their competitor Nortel does.

Now that Cisco offers VSS, things are a little different.

Switched networks add less latency than routed networks, and this is how WANs now work with the advent of MPLS, etc...

So in fact, I have to disagree with you ADB100 - if you can avoid routing it, it will go faster, so it's often better if you don't route unless you have to.