Reback SMS / DSL packet loss issue.

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1

Hi all,

Hope the last NANOG was good, I was supposed to go, but alas business got in the way.

I've got a question about an issue I'm seeing with some DSL clients. It may not be limited to Redback's SMS, but that's the platform being used, so I won't speak in generalities.

Occasionaly clients connected via ATM PVC's experience packet loss after reconnecting due to power loss. The line sync is fine, but packet loss of between 40 - 60% occurs. Only once I've used "clear sub <subscriber>" to disconnect the session does the packet loss stop. Anyone know why that would be?

I'd appreciate any insight or a push in the right direction regarding this, thanks.

2

Which model of SMS is this and what version of code are you running? Also how are the customers connecting to you (bridged, one PVC per customer/static,
PPPoE, PPPoA, etc...)?

It's been a year or so since I've had my hands on an SMS box, but I can try to blow the dust off of my brain.

Also, if you have a support contract with Redback, have you floated this past their TAC?

jms

3

Justin,

We're using a Redback SMS 1000 running AOS 5.0.6.33. I've only noticed the issue with singleton PVC/static clients. We let our maintenance contract with Redback expire last year, unfortunately, and I doubt management will approve a purchase for this issue.

Thanks,

Stephen Fulton | We can be quick-witted
Systems Administrator | or very intelligent
Toronto, Canada | but not both.
http://www.esoteric.ca/ | -- Stephen Hawking.

Justin M. Streiner wrote:

4

HAHAHA...

"Redback support contract"

that's very funny...

:-/

5

at all possible I would recommend upgrading to AOS 6.

Now how you go about doing that without a support contract I don't know.

Sorry I can't be more help.