[j-nsp] Clustering J-series across a switch

[Mark Menzies]

It works on 11.4 (several versions) with running dual control and dual
fabric links between 2 SRX3600 using cisco VSS switches in between.

As long as control and data planes have different VLANs and you enable
jumbo frames on the fabric it just works.

Not tried to Q in Q the traffic though, just vanilla vlans for now.


On 2 April 2013 17:57, OBrien, Will <ObrienH at missouri.edu> wrote:

> I've heard that it works. I have avoided it so far, however.
>
> Will O'Brien
>
> On Apr 2, 2013, at 11:48 AM, "Mike Williams" <mike.williams at comodo.com>
> wrote:
>
> > Hey all,
> >
> > So I've been reading the clustering docs, and they make it pretty clear
> that
> > the (at least) control link should connect the devices "back-to-back".
> > I don't have the page to hand but there is an option to configure the
> control
> > link in the old way, using (a?) VLAN (4094 IIRC), otherwise new clusters
> will
> > use a special ether-type.
> >
> > Now if Junos is going to use a new ether-type for control link
> communication
> > it's pretty certain the devices would have to be connected
> "back-to-back", but
> > if control link traffic is within a specific VLAN switching it shouldn't
> be a
> > problem, right? I'd q-in-q the traffic anyway.
> >
> > The health of the control and fabric links is determined by heartbeats
> only,
> > not link state, so a switch wouldn't hurt that.
> >
> > I accept that clustering across a switch isn't necessarily advisable,
> I'm just
> > wondering if it's fundamentally possible.
> > Has anyone ever even tried to put a switch between a J-series, or
> SRX-series,
> > cluster?
> >
> > Thanks
> >
> >
> > Currently we've 2 J6350s on different floors of a building, with
> different
> > providers. Around that building we have a 10Gbps VC ring of EX3300s. We
> want
> > to cluster the J-series' but don't want the hassle or cost of running
> copper
> > between the providers (if that's even possible) when the VC is way more
> than
> > fast enough.
> > Traffic levels are way way below 10Gbps, and it's highly unlikely
> they'll ever
> > get that high.
> >
> > --
> > Mike Williams
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