[j-nsp] juniper trinity

magno massimo.magnani at gmail.com
Sat Oct 24 12:38:53 EDT 2009

I repeat, Trinity has nothing to do with ez-chip. My advice is to stop
elucubrating around any ez-chip whatever.

Ez-chip proved to be quite limited for some qos functions, so I really
don't think juniper wants to be qos feature limited by a third-party
chip anymore.

My 2 cents.


On 24/10/2009, Richard A Steenbergen <ras at e-gerbil.net> wrote:
> On Sat, Oct 24, 2009 at 11:56:18AM +0200, Roger Gabarit wrote:
>> >
>> I'm sorry not to agree on this one. Unless you can prove me that I'm wrong
>> :)
>> - Juniper uses the chips on the MX series only in -Q- Line Cards. So when
>> you use something only in advanced QoS line cards, there's something
>> related
>> to QoS, definitely.
>> - Check the description of EZChip NPs on their website (
>> http://www.ezchip.com), they are built to provide the Ethernet framing and
>> MAC lookup AND traffic management). Neither Cisco nor Juniper would buy a
>> chip to have it do only 20% of what it could do. Cisco uses the chip in
>> the
>> ES+/ES40 and in ASR 9k cards.
> Juniper uses EZChips on all MX series line cards, not just -Q. In fact,
> the distinction between the original MX DPCs and the -E models is the
> rev of EZChip, with the -E's having support for larger microcode (1.5KB
> vs 6KB). On regular switching/routing cards the EZChip is used only for
> framing and MAC lookup, all of the IP routing and QoS is handled by the
> I-Chip. I think you're actually right about the -Q cards, there is some
> EZChip QoS functionality used there to implement the per-VLAN features,
> but I (and one would assume most sane people with a budget :P) don't
> touch the -Q cards. :)
>> All that stuff makes me think that the 2 vendors will not release any 100G
>> ports (*with advanced QoS*) on MX or ASR until the EZChip NP4 is produced
>> (not only prototypes). That gives by the way > 2 years advance to
>> Alcatel-Lucent from that point of view, because their 100G NP has been
>> ready
>> since last year. Funny market :)
>> But well, let's wait for Juniper's next week announcement.
> I don't think the Trinity announcement has anything to do with 100G, but
> I could be wrong.
> --
> Richard A Steenbergen <ras at e-gerbil.net>       http://www.e-gerbil.net/ras
> GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)
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