Some RE-S-1800X4, yeah.

ASR9k has RSP440, so quad core x86 as well. Comparable I think.

Not sure about 7600 but definitely something old.

02.12.2015 19:18, Colton Conor пишет:
Stephen,

Which RE is that on the MX480? The RE2000 or the quad core one?

On Wed, Dec 2, 2015 at 4:42 AM, Stepan Kucherenko <t...@megagroup.ru
<mailto:t...@megagroup.ru>> wrote:

    Should've put it here in the first post, got already asked about it
    offlist couple of times.

    I was testing it on MX80 with slow RE, so obviously numbers will
    change on faster REs but difference will still be there.

    ~1.5min taking full table from MX480 (nice RE, 85k updates)
    ~3min from 7600 (old and slow RE, 89k updates)
    almost 5min from ASR9k (nice RE, 450k updates)

    It'll be even more noticeable when Junos will be able to run rpd on
    a dedicated core.



    Keep in mind that it's still not actual convergence time, Junos is
    still lagging with FIB updates long after that.

    Sadly I was unable to find my old convergence test numbers but krt
    queue was dissipating for at least couple of minutes after BGP
    converged. I case you're wondering if it was the known rpd bug with
    low krt priority - no, I tested it after it was fixed. Not that I'd
    call it "fixed".

    And that's what I don't like about MX-es :-) Not sure if it's faster
    or slower on ASR9k though.


    On 02.12.2015 12:30, James Bensley wrote:

        On 1 December 2015 at 17:29, Stepan Kucherenko <t...@megagroup.ru
        <mailto:t...@megagroup.ru>> wrote:

            My biggest gripe with ASR9k (or IOS XR in particular) is
            that Cisco stopped
            grouping BGP prefixes in one update if they have same
            attributes so it's one
            prefix per update now (or sometimes two).

            Transit ISP we tested it with pinged TAC and got a response
            that it's
            "software/hardware limitation" and nothing can be done.

            I don't know when this regression happened but now taking
            full feed from
            ASR9k is almost twice as slow as taking it from 7600 with
            weak RE and 3-4
            times slower than taking it from MX.

            I'm not joking, test it yourself. Just look at the traffic
            dump. As I
            understand it, it's not an edge case so you must see it as well.

            In my case it was 450k updates per 514k prefixes for full
            feed from ASR9k,
            89k updates per 510k prefixes from 7600 and 85k updates per
            516k prefixes
            from MX480. Huge difference.

            It's not a show stopper but I'm sure it must be a
            significant impact on
            convergence time.


        How long timewise is it taking you to converge?

        Last time I bounced a BGP session to a full table provider it
        took sub
        1 minute to take in all the routes. I wasn't actually timing so I
        don't know how long exactly.

        Cheers,
        James.
        _______________________________________________
        juniper-nsp mailing list juniper-nsp@puck.nether.net
        <mailto:juniper-nsp@puck.nether.net>
        https://puck.nether.net/mailman/listinfo/juniper-nsp

    _______________________________________________
    juniper-nsp mailing list juniper-nsp@puck.nether.net
    <mailto:juniper-nsp@puck.nether.net>
    https://puck.nether.net/mailman/listinfo/juniper-nsp


_______________________________________________
juniper-nsp mailing list juniper-nsp@puck.nether.net
https://puck.nether.net/mailman/listinfo/juniper-nsp

Reply via email to