Morgan, We have some cases running EX8200 as a Virtual Chassis, but you will need the XRE200 External Routing Engines:
http://www.juniper.net/in/en/products-services/switching/ex-series/options/xre200/ Don't forget that you will need the 8 ports (10 gig) for chassis inter x connections - EX8200-8XS It is a very good topology and we have very good performance with not bad uptime (196 days) right now. Without STP problems. We have used a lot of EX4200 pairs (48 port) connected by Virtual Chassis for Client Access. 2 x 10 giga fiber (1 for each EX4200) connect using Aggregated Ethernet Interfaces to both EX8200 (10 gig modules) I really recommend it for you. Att, Giuliano On Fri, Oct 26, 2012 at 4:46 PM, Morgan McLean <wrx...@gmail.com> wrote: > Hey guys, > > So I run SRX as my core firewalls, with EX8200's doing core switching and > EX3300's doing access switching. I have two SRX's, two 8208's, and two > 3300's at every cabinet. Spanning tree is a pain in my ass, especially > since I have other environments setup the same way, just with smaller > switches. Right now the SRX reth interfaces only come down as legs, not > full mesh. The top of rack switches have only one link active at a time, > legs. The interconnects between the core switches of different environments > are legs, not full mesh due to spanning tree constraints (it closes the lag > center trunk between the core switches). > > It would be a lot easier if I could just VC the core and VC the access > switch pairs so that multi-chassis lags can be run everywhere and I can for > the most part cut spanning tree out of the picture and have greater link > fault tolerance. How reliable is VC? I've really done my best to avoid it > up to this point as I try to keep redundant systems as separate as possible > so one doesn't take down the other. Then again, when it comes down to it my > edge and core firewalls are all SRX clusters, so... :) lol > > I'm not really sure what kind of information I'm looking for here. I would > just run 20G lags eveywhere instead of having 10G forward/blocking STP > pairs. I don't really know how things work when a device fails, how fast > convergence is, split brain scenarios etc. > > Any major lessons learned with this technology? I am aware that with the > 8200's I would need the external SRE. > > Thanks, > Morgan > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp