Hey everyone, I'm working on replacing some datacenter Cat 6500s with Juniper MX and the more I read about bridge domains and L2 virtual switches, the more I'm completely mystified. Our current deployment is VLAN-based (one per customer installation). L3 services are provided on SVIs.
If I create IRB interfaces without creating a bridge domain, is there any way to extend beyond 4094 VLANs? What I *want* is to carve off virtualized L2/L3 aggregation routers with isolated VLAN ID domains and STP instances. Looks like a bridge domain can only have a single L3 interface. Am I supposed to configure a bridge domain per installation? If so, is there a limit to the number of bridge domains? The Layer 2 Virtual Switch feature appears to require the creation of a bridge domain, and thus is subject to the same constraints. Any way around that? I could create multiple logical systems: one to handle all L3 services, and a few to behave as L2 aggregation. Then, hand off logical tunnels from the first to each of the second. This doesn't seem that bad, but I'm worried I'll hit surprising limitations down the road. I could keep the Cat 6500s as L2 aggregation and just hand-off normal L3 interfaces. This isn't so attractive, since it ties us to the keeping the existing boxes and just doing less with them. But it Am I missing any options? Ross -- Ross Vandegrift [email protected] "If the fight gets hot, the songs get hotter. If the going gets tough, the songs get tougher." --Woody Guthrie
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