From: Scott F. Robohn (sfr@xxxxxxxxxxxxxx)
Date: Mon Sep 11 2000 - 17:22:28 GMT-3
Not quite sure about this, but I think UBR+ was a Cisco
marketing-type phrase for an ABR-like traffic management
category before ABR actually existed.
FWIW,
sfr
> shotcaller30 wrote:
>
> I'm having trouble figuring out the difference between abr
> and ubr+.
>
> The docs show this for ABR
> In ABR transmission, the peak cell rate (PCR) specifies
> the maximum value of the allowed cell rate (ACR), and
> minimum cell rate (MCR) specifies the minimum
> value for the ACR. ACR varies between the MCR and the PCR
> and is dynamically controlled using congestion control
> mechanisms.
>
> and this for ubr+
> To select Unspecified Bit Rate (UBR) QOS and configure the
> output peak cell rate and output minimum guaranteed cell
> rate for an ATM PVC, SVC, or VC class,
> use the ubr+ command in the appropriate command mode.
-- >> Scott F. Robohn, CCSI #20826/CCNP/CCDP ........ 703-623-3752 << >> mentor technologies ..... Service Provider Engineering Group << >> mailto:sfr@mentortech.com ........ http://www.mentortech.com << >> ........... Formerly Chesapeake Network Solutions .......... <<
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