nanog mailing list archives
Re: Question about EX - SRX redundancy
From: Anurag Bhatia <me () anuragbhatia com>
Date: Thu, 2 Apr 2015 23:50:46 +0530
Hi Yes, Since SRX0 connected to EX0 and SRX1 connected to EX1 (only). Thus either pair - 0 will work or pair - 1 will work. I wish if criss crossing worked then failure of one EX would have still made both SRX available. In current worst case scenario - failure of EX0 and SRX1 can cause full outage. Thanks. On Thu, Apr 2, 2015 at 9:21 PM, Hugo Slabbert <hugo () slabnet com> wrote:
In: > EX0 (ae1) >> Two Patches to SRX0 (reth1)EX1 (ae2) >> Two Patches to SRX1 (reth1)with: > that if one EX goes down then I cannot make use of other correspondingSRX.Do you mean that e.g. if SRX0 is the chassis cluster primary and EX0 goes down, then you can't use SRX0, but you would like to be able to survive EX0 going down *without* failing over the SRX chassis cluster to SRX1? -- Hugo On Thu 2015-Apr-02 20:47:03 +0530, Anurag Bhatia <me () anuragbhatia com> wrote: HiI thought cross chassis lag is supposed by the use of reth bundled at SRX end. I read this is basically the major difference in reth Vs ae bundle in SRX. Interesting factor here is that ae bundles can spread across multiple EX chassis in a virtual chassis environment but this cannot be the case with ae bundles in SRX. Thanks. On Thu, Apr 2, 2015 at 7:59 PM, Bill Blackford <bblackford () gmail com> wrote: It's my understanding that a cross chassis LAG is not supported. If thereis 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 iPhoneOn Apr 2, 2015, at 07:12, Anurag Bhatia <me () anuragbhatia com> wrote: Hello everyone! I have got two Juniper EX series switches (on virtual chassis) and twoSRXdevices on native clustering. I am trying to have a highly available redundancy between them withatleast2Gbps 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> aswell asthis 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 andfollowingthe documentation I get two ae bundles in EX side and one single reth bundle on SRX side. Both ae bundles on EX side have identicalconfigurationand 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 longas 1out of 4 patch is connected connectivity stays live but this has tradeoffthat if one EX goes down then I cannot make use of other correspondingSRX.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-- 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
-- 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
Current thread:
- Fwd: Question about EX - SRX redundancy Anurag Bhatia (Apr 02)
- Re: Question about EX - SRX redundancy Bill Blackford (Apr 02)
- Re: Question about EX - SRX redundancy Anurag Bhatia (Apr 02)
- Re: Question about EX - SRX redundancy Hugo Slabbert (Apr 02)
- Re: Question about EX - SRX redundancy Anurag Bhatia (Apr 02)
- Re: Question about EX - SRX redundancy Hugo Slabbert (Apr 02)
- Re: Question about EX - SRX redundancy Anurag Bhatia (Apr 02)
- Re: Question about EX - SRX redundancy Hugo Slabbert (Apr 02)
- Any google network admins out there? Randy (Apr 02)
- Re: Any google network admins out there? Pedro Cavaca (Apr 03)
- Re: Any google network admins out there? Matt Palmer (Apr 03)
- Any google network admins out there? Fred Hollis (Apr 03)
- Re: Any google network admins out there? Christopher Morrow (Apr 03)
- Re: Any google network admins out there? Pedro Cavaca (Apr 03)
- Re: Question about EX - SRX redundancy Anurag Bhatia (Apr 02)
- Re: Any google network admins out there? Joe (Apr 03)
- Re: Question about EX - SRX redundancy Bill Blackford (Apr 02)