Phil
Karl Denninger wrote:
>
> Hi folks,
>
> Dig this...
>
> Customer with a 2B account. Configured on an ASCEND P50 for
> "min channels = 2", "max channels = 2".
>
> Now, am I dense, or should this configuration:
>
> 1) Bring up both channels.
> 2) Ping-pong transmit packets between them so BOTH see traffic upbound.
> 3) Not run afoul of the idle timer on either channel (unless both go
> idle, in which case it hangs up both lines).
>
> It doesn't work. It *appears* that the upbound traffic only goes out ONE
> channel from the P50 to the network; the other appears to be idle! Since
> we have the PM3 idle timeout set to 20 minutes, and most traffic in an ISP
> environment to customers is DOWNBOUND, after 20 minutes channel #2 drops --
> and then NEVER gets restored until the call is terminated and re-initiated
> by the customer! EVEN IF THE CUSTOMER PLASTERS THE FIRST CHANNEL, the
> Pipeline won't re-establish the second channel connection!
>
> ASCEND's answer to the customer? You have to use MP+ (their proprietary
> nonsense) or BACP to get the behavior you want.
>
> My response? That's BADLY braindead. Its TRIVIALLY SIMPLE to measure
> the throughput on a sync line, and bring up the second channel ON YOUR OWN
> when the threshold is reached WITHOUT the central-site hardware dialing
> you or using BACP-anything.
>
> Further, if I say NAIL BOTH CHANNELS I know damn well what I want, I meant
> what I said, and I want both channels USED all the time!
>
> I will note with some interest that the Farallon Netopia does the "right
> thing" and doesn't suffer from this. You can keep a 2B call up until
> hell freezes with that box and it won't drop a channel -- but it ping-pongs
> the data upbound (you can see it on the blinken-lights) so both channels see
> traffic.
>
> Anyone got ideas? Or is this just something that I have to tell the customer
> they should go beat their vendor about the ears until they fix it -- or
> perhaps the fix is to return the ASCEND and get a Farallon product that
> knows how to do this stuff correctly....
>
> Talk about people not playing nice in an open systems environment.....
>
> --
> --
> Karl Denninger (karl@MCS.Net)| MCSNet - The Finest Internet Connectivity
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