7200 vs 7600 VLANs
I am looking for some clarification on support of VLANS. I am looking
at an application in which I have a VLAN per home. I want to do Layer 2
forwarding up to a "big" router (7200/7600). I expect to have more than
4096 subscribers (VLANS) per big router. I want the router to do IP
forwarding, but NOT to bridge traffic from two homes that happen to
have the same VLAN tag.
1. I heard that the 7600 cannot support more than 4096 VLANS. True?
2. I heard tha the 7200 CAN support more than 4096 vlans, but will it
try to bridge customers with the same VLAN ID? Ovbviously, if two
subscribers with the same VLAN ID happen to come in on the same
physical port, then the router will assume that they are from the same
But suppose I coudl guarantee that if a VLAN ID is reused, it woudl be
on a different physical interface. Would things work then?
3. What are these features called (industry standard terms)? VLAN
switching? Port Isolation?
Thanks in advance.
- RE: IPS and Trunking
... 3Com/TippingPoint Intrusion Prevention Systems ... Supported VLAN ... I don't know what vendors support this capability, but it is certainly supported by Cisco sensors. ... You can plug an interface on a Cisco IPS sensor into a trunk port, and the sensor can treat each VLAN on the trunk separately. ...
- Re: Advice for Switch and Router solution for small office
... bricks is worth the savings on the switch). ... Anyways, for a router to use, it really depends on what you need to do. ... they cannot support DSPs. ... -Does the switch support VLAN tagging ...
- Re: vlans and cloning
... That said the current plan it to eliminate if_vlan and integrate vlan support directly into if_ethersubr.c to allow use to correctly handle the default vlan case among otherthings. ... The bridge code needs access to the vlan tag to properly hash the address as each vlan is a seperate broadcast domain, this would be much easier with vlan merged to if_ethersubr.c. ... I've not had a chance to prototype this to explore what the above words actually mean, so I think some experimental prototyping is called for. ...
- Re: Trouble with PIX 506 ver 5.1
... No. VLANs are not supported until PIX 6.3, ... A couple of models have no VLAN support at all; ... rip passive is only of value if there is a supplier of RIP information ...
- Re: Freebsd IP Forwarding performance (question, and some info) [7-stable, current, em, smp]
... The lack of FreeBSD support isn't great but I doubt it's going to happen until someone steps up and makes it so. ... The same is likely true for VLAN support. ... Considering all high performance routing platforms separate the management and routing/switching into two different hardware sections it wouldn't surprise me at all to see this as the only real option to get some serious routing and firewalling performance out of i386/amd64 type servers. ... Throwing faster and faster cpus at it is only ...