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TomS_
Git-r-done
MVM
join:2002-07-19
London, UK

TomS_ to aryoba

MVM

to aryoba

Re: Which Router?

Im well aware of that. I have MPLS configured in my lab at home between Cisco and Juniper routers. :-)

But I am not talking about a routing instance configured as a virtual router (akin to a VRF) though.

Really I shouldnt have mentioned it, or should have written "virtual router."

What I am talking about is configured under the logical-systems stanza, e.g.:

logical-systems {
    Router1 {
        interfaces {
            ...
        }
        protocols {
            bgp {
                ...
            }
            isis {
                ...
            }
        }
        routing-instances {
            vr1 {
                instance-type virtual-router;
                ...
            }
        }
    }
    Router2 {
        interfaces {
            ...
        }
        protocols {
            bgp {
                ...
            }
            isis {
                ...
            }
        }
    }
}
 

Yeah, a logical system can have multiple virtual routers of its own. ;)

If you picture 16 routers lined up on a desk. Each one has its own users that can manage it, each one running an instance of BGP, talking MPLS to its neighbors, etc.

Now, merge those 16 physical routers in to a single physical box with one massive configuration, where the configuration of each physical router is now just a portion of one single massive configuration, but each router still functions individually with its own services.

There you have 15 logical routers, each still doing what they did when they were individual physical routers, plus the physical router which manages them all, but can also do routing. 16 individual routers inside one metal box.

Thats what Im talking about. :)

Its not available on all platforms though. e.g. you wont be doing it on your J series router, or one your low end SRX's. The smallest box I have found that will do all 16, without the need for any licenses, is the M7i.
aryoba
MVM
join:2002-08-22

aryoba

MVM

said by TomS_:

Yeah, a logical system can have multiple virtual routers of its own.

Yup, another JUNOS feature that does not exist in IOS