Date: Thu, 12 Jul 2001 07:34:31 -0500 (CDT) From: mark tinguely <tinguely@web.cs.ndsu.NoDak.edu> To: atm@FreeBSD.ORG, c.prevotaux@hexanet.fr Subject: Re: Service Classes Message-ID: <200107121234.f6CCYVO39511@web.cs.ndsu.NoDak.edu> In-Reply-To: <20010712130128.51266211.c.prevotaux@hexanet.fr>
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> Is it possible to support > > CBR > nt-VBR > nrt-VBR > ABR > UBR > > with a Forerunner 200E and FreeBSD 4.x ? the ForeRunner (IDT 77211 based card) driver is capable of CBR and some VBR support, but the driver interface to HARP code is fixed on VBR mode. That version of the IDT SAR family is bad at all VBR, UBR and no hardware ABR support. For example the SAR may send out a PDU at a specified VBR rate, but cannot work on another PDU in that service queue at the same time. There are 3 total service queues, and in some versions of the chipset, only two queues are usable. The newer family of IDT SAR (IDT 77252) found in the Prosum card has fixed all these problems and supports hardware ABR besides. There is not FreeBSD driver for this card at this time. ~ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-atm" in the body of the message
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