nanog mailing list archives
RE: SFP vs. SFP+
From: "Sam Chesluk" <Sam () networkhardware com>
Date: Thu, 17 Feb 2011 15:41:28 -0800
Depends on the switch. Some, like the 2960S and 4948E, have 1G/10G ports. They will, however, not operate at 4Gbps (that particular speed was chosen to allow the core components to work for gigabit Ethernet, OC48, 2G FC, and 4G FC). Sam Chesluk Network Hardware Resale -----Original Message----- From: Jimmy Changa [mailto:jimmy.changa007 () gmail com] Sent: Thursday, February 17, 2011 3:39 PM To: Sam Chesluk Cc: Jason Lixfeld; <nanog () nanog org> Subject: Re: SFP vs. SFP+ I'm curious also. Could you use a SFP in a ten gig port if you only need 4gb of throughput? Sent from my iPhone On Feb 17, 2011, at 6:25 PM, "Sam Chesluk" <Sam () networkhardware com> wrote:
Jason - there are no SFP-10G parts based off of the original SFP; they all are based on the SFP+ standard, so there will be no issues with
the
optic not being able to work at the full 10Gbps it's rated for. Sam Chesluk Network Hardware Resale -----Original Message----- From: Jason Lixfeld [mailto:jason () lixfeld ca] Sent: Thursday, February 17, 2011 3:00 PM To: nanog () nanog org Subject: SFP vs. SFP+ I was asked today what the difference between SFP and SFP+ is. I did really know, so I looked it up and it seems that the SFP spec provides capabilities for data rates up to 4.25Gb/s, whereas SFP+ supports up
to
10Gb/s. Naturally, this made me wonder whether or not an optic that supported 10GbE always conformed to the SFP+ standard inherently, or
if
there are cases where a 10GbE optic might only support the SFP
standard,
thus having a 4.25Gb/s bottleneck.
Current thread:
- SFP vs. SFP+ Jason Lixfeld (Feb 17)
- RE: SFP vs. SFP+ Sam Chesluk (Feb 17)
- Re: SFP vs. SFP+ Jimmy Changa (Feb 17)
- RE: SFP vs. SFP+ Sam Chesluk (Feb 17)
- Re: SFP vs. SFP+ Richard A Steenbergen (Feb 17)
- RE: SFP vs. SFP+ Frank Bulk (Feb 17)
- Re: SFP vs. SFP+ Richard A Steenbergen (Feb 17)
- RE: SFP vs. SFP+ Peter Nowak (Feb 17)
- Re: SFP vs. SFP+ Richard A Steenbergen (Feb 17)
- Re: SFP vs. SFP+ Nick Hilliard (Feb 18)
- Re: SFP vs. SFP+ Vincent Hoffman (Feb 18)
- Re: SFP vs. SFP+ Vincent Hoffman (Feb 18)
- Re: SFP vs. SFP+ Jimmy Changa (Feb 17)
- RE: SFP vs. SFP+ Sam Chesluk (Feb 17)