[148797] in North American Network Operators' Group

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Re: juniper mx80 vs cisco asr 1000

daemon@ATHENA.MIT.EDU (Mark Tinka)
Mon Jan 23 10:09:22 2012

From: Mark Tinka <mtinka@globaltransit.net>
To: nanog@nanog.org
Date: Mon, 23 Jan 2012 23:08:53 +0800
In-Reply-To: <D181DDABABE57E4DB72FEE0033147864482D66@EALPO1.ukbroadband.com>
Reply-To: mtinka@globaltransit.net
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

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On Friday, January 20, 2012 05:40:10 AM Leigh Porter wrote:

> I have not used the asr1000 but it looks like a capable
> box. You would do well to look at the MX80 fixed
> chassis, it comes with 48 1G interfaces and 4 10G
> interfaces. They are pretty good value, I think.

The thing the MX80 has that the ASR1000 is port density. You=20
get lots of Gig-E ports in there and a couple of 10Gbps=20
ports too. Not too bad.

The ASR1000 has an 8-port Gig-E card (called a SPA - Shared=20
Port Adapter) that offers the most dense Gig-E port capacity=20
in a single-height line card. There is a 10-port Gig-E SPA,=20
but that is a double-height unit, i.e., it eats up 2x slots.

10Gbps port density on the ASR1000 sucks a bit; there is=20
only a 1-port SPA, and no built-in 10Gbps ports unlike the=20
MX80. But on the other hand, the ASR1000 is great if you're=20
looking to throw in some non-Ethernet SPA's, e.g., serial,=20
E1, T1, SONET, SDH, e.t.c. The MX80 won't do this=20
efficiently today, and is really best deployed in Ethernet=20
scenarios.

Also, the MX80 can come with rather complicated licensing=20
structures even for the ports you want enabled, if you want=20
to take advantage of their cheaper offers. This can get=20
hairy.

Mark.

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