[173653] in North American Network Operators' Group
Re: Upgrade Path Options from 6500 SUP720-3BXL for Edge Routing
daemon@ATHENA.MIT.EDU (Mark Tinka)
Wed Jul 30 09:40:46 2014
X-Original-To: nanog@nanog.org
From: Mark Tinka <mark.tinka@seacom.mu>
To: nanog@nanog.org
Date: Wed, 30 Jul 2014 15:40:28 +0200
In-Reply-To: <CAAAwwbXHdDpJ7p2WCxaz-8dx9wLqM-LRawnKGG0Hxsz4V05sGA@mail.gmail.com>
Reply-To: mark.tinka@seacom.mu
Errors-To: nanog-bounces@nanog.org
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On Wednesday, July 30, 2014 03:06:55 PM Jimmy Hess wrote:
> I would generally suggest you look at it as a long term
> decision, at least before jumping to the next
> incremental (modest increase) on the upgrade treadmill.=20
> It depends on whether the 6500 is still a perfect match
> for your network other than the prefix limit. Your
> vendor should think of your equipment as an "investment"
> to be protected, by exploiting your feelings of loss
> aversion, but the upgrade treadmill is a trap..... =20
> next thing you know, you will have to replace the
> chassis, then you will need new linecards......
Next up the road are the 6800's.
Essentially SUP-2T's, so you get software parity Day One,=20
but still the same supervisor module.
We are running 6880's (which are the fixed SUP-2T's, but=20
with modular line cards), but only a core switching (Layer 2=20
Ethernet) role. Great port density since the 10Gbps ports=20
are now SFP+, but oversubscribed line cards 2:1, since each=20
slot is 80Gbps, but the line card comes with 16x 10Gbps=20
ports. You can disable oversubscription and go into=20
performance mode, which disables half the ports on the line=20
card - we do that.
IP-/MPLS-wise, whatever you can do on the 6500 you can do on=20
the 6800, but I can't say for sure as we're running them as=20
switches.
That said, if your goal is IP, just consider the ASR9000,=20
MX, and whatever else other vendors can do in this space.
Mark.
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