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Cisco VLAN Routing Without Trunks

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Last Modified: 2012-07-11
A little background on what I'm trying to do.

I have a remote building connected via radio link.. on either side is a Cisco 2960G, each with a radio plugged in.

There are 3 VLANs at the remote site:
296 - 10.2.96.0 / 24 (Management at site, such as switches)
275 - 10.2.75.0 / 24 (Users at site)
295 - 10.2.95.0 / 24 (Servers at site)

At the primary site, I've a number of VLANs... for the sake of brevity, here's one VLAN:
160 - 10.1.16.0 / 24 (IT Staff)


On to the problem.
Packets between the local and remote building are being dropped left right and center, and as a result performance is abysmal at best.

We upgraded the radios to a dedicated frequency, to improve performance.  The new radios are the ones which exhibit this behavior.

Having spoken with the vendors, they're able to push roughly 150 Mbps through the radios with zero packet loss (I directly observed their test).  They have also indicated that these radios do NOT play nicely with Cisco Trunk ports.

So, I need (would like) to find a way to use multiple VLANs without trunks... whether this would involve additional L3 hardware at the remote (and possibly local site) or otherwise.
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