Re: UBR setting for Verizon West ATM-based 3.0/768 speed

It got to the list but I guess we all don't know. I just took the UBR
for 1.5 and doubled it. I also did similar scaling for the 7Mbps
service. It seemed to work fine

The UBR sets the maximum speed for a circuit. If you set it too low
then throughput it a bit slower. If you set it too high then packets
are dropped and datarate is really bad.

Worldlink DSL Department wrote:

> Ping? Did this get to the list OK? I'm just suprised that I didn't
> get any reponses at all...
>
> Thanks,
>
> Rick Kunkel
> Worldlink DSL Department
> (206)361-8785
>
> ----- Original Message ----- From: "Worldlink DSL Department"
> <dsl@w-link.net>
> To: <verizonisp@westnet.com>
> Sent: Tuesday, April 05, 2005 10:35 AM
> Subject: UBR setting for Verizon West ATM-based 3.0/768 speed
>
>
>> Hello all,
>>
>> What are other people using for the UBR setting on the VC's for the
>> 3.0/768 speed of Verizon's? I've found that if my settings don't
>> match Verizon's pretty closely, things slow to a crawl. And I'm not
>> talking like they slow to the slower of the two speed definitions.
>> If a Verizon DSL customer has a 768/128 line, and I set their VC for
>> UBR 1664, it works at less than modem speeds.
>>
>> Anyhow, early, on, Verizon gave me the following UBR values to plug
>> into my router. For example, here are a few of the VC classes:
>>
>> vc-class atm 768-128-fr
>> ubr 954
>> no ilmi manage
>> encapsulation aal5snap
>> transmit-priority 3
>> !
>> vc-class atm 384-384-fr
>> ubr 477
>> no ilmi manage
>> encapsulation aal5snap
>> transmit-priority 3
>> !
>> vc-class atm 768-128-atm
>> ubr 864
>> no ilmi manage
>> encapsulation aal5snap
>> transmit-priority 3
>> !
>> vc-class atm 1.5-128-atm
>> ubr 1664
>> no ilmi manage
>> encapsulation aal5snap
>> transmit-priority 3
>>
>> I was actually given these values for UBR by Verizon way back when.
>> And again, if I have it set just a little bit off, it all but
>> destroy's the speed. I've asked SEVERAL people there what the UBR
>> value should be for 3.0/768, and gotten no good answer. Currently
>> I'm using UBR 3360, but that's just an educated guess. What are
>> others using?
>>
>> I 'd like to make sure that everything is working optimally for the
>> customers.
>>
>> I'm also double-checking this value because I've currently got a
>> really wacko support issue open with a customer. They recently
>> switched from a Fujitsu platform to a Westell platform, and upped
>> their speed from 1.5/384 to 3.0/768. Since they did that, if the
>> customer send a bunch of SMTP traffic, his connection dies, and only
>> a reboot of the modem fixes it. Other outbound traffic like heavy FTP
>> transfers is NOT triggering it. It started before the speed change,
>> but AFTER the change to the Westell platform. We've tried two modems
>> and power supplies. I'm stumped and grasping for straws...
>>
>> Thanks,
>>
>> Rick Kunkel
>> Worldlink DSL Department
>> (206)361-8785
>>
>>
>

Recent archives of the list can be found at
http://www.westnet.com/verizonisp/
Send 'unsubscribe' in the body to verizonisp-request@westnet.com to leave.
Received on Thu Apr 7 11:23:58 2005