It's my understanding that a cross chassis LAG is not supported. If there is a way, I'm not aware of it. I'm running the same set up as your working example in my locations and for now, this suits my requirements.
Sent from my iPhone > On Apr 2, 2015, at 07:12, Anurag Bhatia <m...@anuragbhatia.com> wrote: > > Hello everyone! > > > > > I have got two Juniper EX series switches (on virtual chassis) and two SRX > devices on native clustering. > > > I am trying to have a highly available redundancy between them with atleast > 2Gbps capacity all the time but kind of failing. I followed Juniper's > official page here > <http://kb.juniper.net/InfoCenter/index?page=content&id=KB22474> as well as > this detailed forum link here > <http://forums.juniper.net/t5/SRX-Services-Gateway/Best-way-of-redundancy-between-SRX-and-EX/td-p/181365> > . > > > I wish to have a case where devices are connected criss cross and following > the documentation I get two ae bundles in EX side and one single reth > bundle on SRX side. Both ae bundles on EX side have identical configuration > and VLAN has both ae interfaces called up. > > > If I do not go for criss cross connectivity like this: > > > > EX0 (ae1) >> Two Patches to SRX0 (reth1) > EX1 (ae2) >> Two Patches to SRX1 (reth1) > > > Then it works all well and redundancy works fine. In this case as long as 1 > out of 4 patch is connected connectivity stays live but this has trade off > that if one EX goes down then I cannot make use of other corresponding SRX. > > If I do criss connectivity, something like: > > > EX0 (ae1) >> Two Patches to SRX0 (reth1) > EX0 (ae1) >> One patch to SRX1 (reth1) > > EX1 (ae2) >> Two Patches to SRX1 (reth1) > EX1 (ae2) >> One patch to SRX0 (reth1) > > > In this config system behaves very oddly with one ae pair (and it's > corresponding physical ports) working well while failover to other ae > bundle fails completely. > > > > I was wondering if someone can point me out here. > > > > > Appreciate your time and help! > > > > > > -- > > > Anurag Bhatia > anuragbhatia.com > > Linkedin <http://in.linkedin.com/in/anuragbhatia21> | Twitter > <https://twitter.com/anurag_bhatia> > Skype: anuragbhatia.com > > PGP Key Fingerprint: 3115 677D 2E94 B696 651B 870C C06D D524 245E 58E2
