Question about router 72XX and LAN switching

Hello 2Tous

There is a 7204VXR/NPE-G2 router, our client wishes to ensure the transparent flow of about three hundred vlan via the router, switch functionality as trunking switchport allowed vlan xxx, yyy, zzz. Given that the router is not broadcast a vlan and for the 72xx series, I have found no commuting port adapter, is it possible to meet the demand of customers without having to install additional standalone switch.

Hello Sultanov,

> our customer wants to make sure that the transparent flow of about three hundred vlan via the router,

You can use vlan based on IP with L2TPv3 transport

See

http://www.Cisco.com/en/us/docs/iOS/12_3t/12_3t2/feature/guide/gtl2tpv3.html#wp1043064

However, I'm seriously worried about the amount of traffic that the customer is supposed to move around on the links:

a NPE - G2 can handle 500 Mbps of traffic full suplex between two GE ports.

And sharing 300 VLAN between two sites look as inappropriate.

Be aware of this, L2TPv3 should be able to carry the frames of the 300 VLAN between two sites on an IP network, but traffic levels must be controlled in some way or the router the Wan link can be submerged

Edit:

If the customer wants to take over the 300 VLAN locally within a single site, it is a work of lan switch and I would use one (C4500 or better) with a link routed to the C7204 that act as router WAN

L2TPv3 could support local switching but this has an impact on performance (traffic not called twice by the router)

Hope to help

Giuseppe

Tags: Cisco Network

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