> Mark Tinka
> Sent: Saturday, June 04, 2016 3:20 AM
>
> On 4/Jun/16 02:22, Nathan Ward wrote:
>
> > Hi Curtis,
> >
> > All packets hit the ESP, they are the backbone of the ASR1000. Just like the
> RSP in the ASR9000 and the SCB in the J-MX, etc. etc.
>
> Well, technically speaking, the RSP in the ASR9000 and SCB in the Juniper
> provide the switching fabric, i.e., an interconnect for the different line
> cards
> to speak to each other.
>
> The equivalent of the ESP on the ASR9000 and MX would be the network
> processors fitted on the actual line card itself, i.e., the Trident, Typhoon,
> Tomahawk and CPP (Cisco Packet Processor) network processors on the
> ASR9000 line cards, and the Trio chipset on the MX line cards.
>
> Unlike the ASR9000 and MX, the ASR1000 does not have a switch fabric, per
> se. It performs centralized hardware forwarding, which means all traffic from
> all line cards goes through the ESP at all times. This is akin to the
> M7i/M10i/MX80 architecture.
>
Great explanation Mark, though you surprised me with the last statement.
How is MX80 different compared to ASR1K, I was under the impression that both
are based around central NP to which all interface blocks connect to via
passive midplane (so essentially directly).
adam
Adam Vitkovsky
IP Engineer
T: 0333 006 5936
E: [email protected]
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