[AusNOG] Running out of VLANs

[J Williams]

Hi James,

Have you looked into enabling extended VLAN range:
http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_52_se/configuration/guide/swvlan.html#wp1200242
Also, you only need as many spanning tree instances as there are physical
topologies, therefore consider migrating to MST:
http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_example09186a00807b075f.shtml

Regards,
Jules


On Mon, Dec 16, 2013 at 2:20 PM, James Mcintosh <
james.mcintosh at rocketmail.com> wrote:

> Hi Noggers,
>
> What are people doing about hitting switch VLAN limits? We terminate a lot
> of Ethernet services from several carriers. Our Cisco switch gear is great
> but limited to 128 spanning tree VLAN sessions and 1,000 VLANs.
>
> We've long since passed the 128 per-VLAN spanning tree limit. We're now
> getting closing in on 1,000 VLANs.
>
> I'm sure there are service providers on list who are much larger than we
> are and have solved this problem.
>
> Would love to hear thoughts on the best approach.
>
> Just to give a bit more detail - we aggregate all our upstream carrier
> circuits on the Cisco switch then trunk the customer VLANs to the
> appropriate router for termination.
>
> -James
>
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