Hi, It's because of the newer, little more expensive chipsets/ASICs inside the B3/B5 compared to the B2s. They didn't wanted to put an additional chip inside for the support of four additional ports. (lets say one chip supports 8 or 12 Gig ports, then one additional chip for "just" four Gig ports was to much for the designers).
You are right with your statement with the loss of functionality. Many customers say the same. But we don't want to use i.e 10 Gig chipsets/ASICs and share it over 12 Gig ports (oversubscription), like most of other vendors do. Cheers, Markus Sent via iPhone. On 12.01.2011, at 13:01, "Wenceslao Poveda Sánchez" <[email protected]> wrote: > Hi Shashank, this is the part. no. B5G124-48 > > Markus I understand what you tell, but I don't understand the reasons for > that implementation. We have this type of switch B2H124-48 in my organization > and it is 48+4 as you say, but this is not specified anywhere. > In new ones (B3&B5 series) this behavior ("shared ports") seems a loose of > functionality because at any case we'll have 4 idle ports. > > > > -----Mensaje original----- > De: Devlekar, Shashank [mailto:[email protected]] > Enviado el: miércoles, 12 de enero de 2011 12:34 > Para: Enterasys Customer Mailing List > Asunto: RE: [enterasys] B3&B5 issue > > Can you share the part no. of B3 & B5 switch e.g. B3G124-24 or B5G124-24 etc. > > Regards, > Shashank > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Kaiser, Markus > Sent: Wednesday, January 12, 2011 4:59 PM > To: Enterasys Customer Mailing List > Cc: Enterasys Customer Mailing List > Subject: Re: [enterasys] B3&B5 issue > > Hi, > > the SFP ports of most B3/B5 and other SecureStack devices are "shared" ports > and no additional ports (safest way is to look at the front panel port > descriptions). > > You can use either the RJ45/copper port OR the SFP port. So if you use i.e. > ports 21-24 of a 24 port switch with SFP, you can't use the same ports 21-24 > in copper. But you can use port 21-22 with SFP and port 23-24 as copper port. > If you, by mistake, connect all ports (port 21-24 SFP and port 21-24 with > copper), then the copper ports will be prioritized and active, while the SFP > ports stay down - as far as I remember. > > A 24 port switch has a maximum of 24 active ports, not 24+4, except with 10G > switches (SFP+), there the 2 or 4 uplink ports are additional ports. > > Hope this helps. If there's a detail missing, please ask. > > Cheers, > > Markus > > > Sent via iPhone. > > On 12.01.2011, at 11:50, Wenceslao Poveda Sánchez > <[email protected]<mailto:[email protected]>> wrote: > > Hi, > > First of all thank you for your attention. > > In B3 and B5 switches we've adquired recently I have notice that SFP port > aren't independent from GE ports. > > Can anyone tell how to work with SFP ports like additional ports and avoid > overlapping with GE ones, like other enterasys series. > > Thanks. > > * --To unsubscribe from enterasys, send email to <mailto:[email protected]> > [email protected]<mailto:[email protected]> with the body: unsubscribe > enterasys [email protected]<mailto:[email protected]> > > > --- > To unsubscribe from enterasys, send email to [email protected] with the body: > unsubscribe enterasys [email protected] > > --- > To unsubscribe from enterasys, send email to [email protected] with the body: > unsubscribe enterasys [email protected] > > --- > To unsubscribe from enterasys, send email to [email protected] with the body: > unsubscribe enterasys [email protected] > --- To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected]
