NANOG Digest, Vol 89, Issue 15

Sun Jun 14 12:28:02 UTC 2015

Hi,

>Message: 15
>Date: Sun, 14 Jun 2015 01:09:44 +0530
>From: Anurag Bhatia <me at anuragbhatia.com>
>To: NANOG Mailing List <nanog at nanog.org>
>Subject: Re: Question about EX - SRX redundancy
>Message-ID:
>	<CAJ0+aXabO5GCbWgoCERjqcX8DWiK9q3Pj7bmQkFkY41P8TBSLA at mail.gmail.com>
>Content-Type: text/plain; charset=UTF-8

>   3. In case of SRX only one device runs at a time and ports of other SRX
>   (slave) do not access traffic at all as long as it see the master is up via
>   heartbeat.

This is true with regards to RETH interfaces, but any interface that is
not part of a reth group on the slave SRX will function all the time.
The SRX HA works with RE being up only on the master, while the PFE
(which is what all interfaces use) is live on both systems all the time.

In fact, you can make a reth group to have it's master interface on the
slave SRX, depending on your redundancy group priorities. Also, I'd
recommend assigning more than one interface for FAB links, providing
your SRXes have the spares to use.

Kareem.

-- 
Abdulkareem H. Ali
Network Operations Engineer
CentralNic Group PLC
London Stock Exchange Symbol: CNIC

+44 20 3388 0600
www.CentralNic.com

CentralNic Group PLC is a company registered in England and Wales with
company number 8576358. Registered Offices: 35-39 Moorgate, London, EC2R
6AR.