[Ixp] RE: [ixp1200] Migration of IXP12XX to IXP2XXX

Wong Kim Sing wongks at i2r.a-star.edu.sg
Mon Jun 13 23:35:48 EDT 2005


Hello Jiangbo,

Thank you for your replied.

-----Original Message-----
From: ixp1200-bounces at lists.cs.princeton.edu
[mailto:ixp1200-bounces at lists.cs.princeton.edu] On Behalf Of Jiangbo Li
Sent: Tuesday, June 14, 2005 10:02 AM
To: IXP1200 Developer's List
Subject: Re: [Ixp] RE: [ixp1200] Migration of IXP12XX to IXP2XXX

I did such migration before. Only a few micros can be reused without
modification.
The whole code need to be redesigned to take advantage of the IXP2400
hardware.

On 6/13/05, Wong Kim Sing <wongks at i2r.a-star.edu.sg> wrote:
> Hello Mathieu,
> 
> Thank for you feedback.
> 
> Do you mean it is possible to do so?
> But, if we need to use the HW feature of the IXP2400 (example GbE - From
> 1GbE (IXP1200) to 2.5GbE (IXP2400)), we need a lot of changes on the code
> itself, is it right?
> 
> Best regard,
> Mike Wong
> 
> -----Original Message-----
> From: ixp1200-bounces at lists.cs.princeton.edu
> [mailto:ixp1200-bounces at lists.cs.princeton.edu] On Behalf Of Mathieu
> Bertrand
> Sent: Monday, June 13, 2005 4:48 PM
> To: 'IXP1200 Developer's List'
> Subject: RE: [ixp1200] Migration of IXP12XX to IXP2XXX
> 
> 
> 
> -----Original Message-----
> From: David Mentre [mailto:Mentre at tcl.ite.mee.com]
> Sent: lundi 13 juin 2005 08:49
> To: 'IXP1200 Developer's List'
> Subject: RE: [ixp1200] Migration of IXP12XX to IXP2XXX
> 
> 
> > From: Wong Kim Sing [mailto:wongks at i2r.a-star.edu.sg]
> > Sent: Monday, June 13, 2005 9:38 AM
> 
> > It's possible to do so without
> > rewriting the code and still working in the same application?
> 
> No, you'll have to rewrite the code. The assembler is different. Close to
> ixp1200 put different.
> 
> As I said previously, I have not ported a code from ixp1200 to ixp2000 so
I
> can't tell about the extent of needed modifications.
> 
> Yours,
> d.
> --
> David MENTRE <mentre at tcl.ite.mee.com> - Research engineer (Ph.D.)
> Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab
> Phone: +33 2 23 45 58 29 / Fax: +33 2 23 45 58 59
> http://www.mitsubishi-electric-itce.fr
> 
> 
> 
> 
> Hi all,
> Well, I worked first with the ixp1200 before the ixp2400.
> The µcrode is nearly the same so you can rather easily port the code...
some
> instructions have changed so it should be considered. However in order to
> correctly map and use the HW, an ixp2400 code is really different from an
> ixp1200 one. Many features were added (next neighbour registers, qarray,
> local memory, CAM) and so, for a standard use, the ixp2400 code is
supposed
> to be developped with a pipeline approach.
> Regards,
> Mathieu
> ----------------
> Mathieu BERTRAND
> Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab
> Phone: +33 2 23 45 58 31 / Fax: +33 2 23 45 58 59
> E-mail : bertrand at tcl.ite.mee.com
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