RE: How to loadshare over many E1 links
Jared, I meant the latter. I knew that there were switch to switch FDX capabilities - I'd never seen a router interface or NIC though. Cool. Know any vendors off the top of your head??? -Chris
-----Original Message----- From: Jared Mauch [mailto:jared@puck.nether.net] Sent: Friday, September 18, 1998 12:34 PM To: Martin, Christian; 'Scott Whyte'; 'Jesper Skriver'; 'nanog@merit.edu' Cc: 'tdk-backbone@t.dk' Subject: Re: How to loadshare over many E1 links
On Fri, Sep 18, 1998 at 12:17:47PM -0400, Martin, Christian wrote:
I didn't know there was any full-duplex 10BaseT spec...
Yes there is. You need to have cards that support it, not everything does.
Most modern switches support 10M fdx links, but not all router interfaces support them. Some pc cards support it, but not all.
It does exist, but is not wideley used at all. Most people with that much traffic opt to use FE or Fddi
- jared
-- Jared Mauch | pgp key available via finger from jared@puck.nether.net | http://puck.nether.net/~jared/
On Fri, 18 Sep 1998, Martin, Christian wrote:
Jared,
I meant the latter. I knew that there were switch to switch FDX capabilities - I'd never seen a router interface or NIC though. Cool. Know any vendors off the top of your head???
Most 10/100M cards have FDX for both 10 and 100Mbps operation. Cisco catalyst hubs support 10Mbps FDX. Intel EtherExpress PCI cards do 10M FDX... BayNetworks hubs also.. --- "Microsoft is to quality software what McDonalds is to gourmet cooking"
On Fri, 18 Sep 1998, Chris Cappuccio wrote:
Most 10/100M cards have FDX for both 10 and 100Mbps operation. Cisco catalyst hubs support 10Mbps FDX. Intel EtherExpress PCI cards do 10M FDX... BayNetworks hubs also..
I thought the catalyst line were switches only. Can hubs support full-duplex? I didn't think they could for some reason. Barry L James | Mikrotec Internet Services, Inc (AS3801) Director R & D | 1001 Winchester Rd bjames@mis.net | Lexington KY 40505 http://www.mis.net/ | 606/266.5925 800/875.5095 Member AAAI, IEEE # 40277528 --- Man will occasionally stumble over the truth, but most of the time he will pick himself up and continue on. -- Winston Churchill
On Fri, 18 Sep 1998, Barry L James wrote:
On Fri, 18 Sep 1998, Chris Cappuccio wrote:
Most 10/100M cards have FDX for both 10 and 100Mbps operation. Cisco catalyst hubs support 10Mbps FDX. Intel EtherExpress PCI cards do 10M FDX... BayNetworks hubs also..
I thought the catalyst line were switches only. Can hubs support full-duplex? I didn't think they could for some reason.
I dunno if Cisco calls the 1900 and 2900's switches, but as far as I can tell they don't do anything more then my 10/100 Bay networks hubs!! Smart, very manageable hubs.. The 10Mbps ports on the 1900 and Bay networks 301 don't do FDX, but the 100Mbps on the 2900 and Bay networks 350/350T do 10M/FDX.. --- "Microsoft is to quality software what McDonalds is to gourmet cooking"
On Fri, 18 Sep 1998, Chris Cappuccio wrote:
I dunno if Cisco calls the 1900 and 2900's switches, but as far as I can tell they don't do anything more then my 10/100 Bay networks hubs!!
Smart, very manageable hubs.. The 10Mbps ports on the 1900 and Bay networks 301 don't do FDX, but the 100Mbps on the 2900 and Bay networks 350/350T do 10M/FDX..
Your bay networks HUBS can do VLANS and brodcast storm control ? -Chris
I dunno if Cisco calls the 1900 and 2900's switches, but as far as I can tell they don't do anything more then my 10/100 Bay networks hubs!!
Those are definately switches, EXCEPT that if you have a multiport card in one of the slots of the 2900 (say, an 8 port 100BaseT card), then the ports on that card are hubbed with respect to each other, and appear as a single switch port to the rest of the switch. But I also thought that these switches only supported FDX on the 100 ports. -Phil
On Fri, 18 Sep 1998, Phillip Vandry wrote:
But I also thought that these switches only supported FDX on the 100 ports.
Nope I've had them FDX in 10M - on the 2916 at least. -- I am nothing if not net-Q! - ras@poppa.clubrich.tiac.net
At 12:00 PM -0700 9/18/98, Chris Cappuccio wrote:
On Fri, 18 Sep 1998, Barry L James wrote:
On Fri, 18 Sep 1998, Chris Cappuccio wrote:
Most 10/100M cards have FDX for both 10 and 100Mbps operation. Cisco catalyst hubs support 10Mbps FDX. Intel EtherExpress PCI cards do 10M FDX... BayNetworks hubs also..
I thought the catalyst line were switches only. Can hubs support full-duplex? I didn't think they could for some reason.
I dunno if Cisco calls the 1900 and 2900's switches, but as far as I can tell they don't do anything more then my 10/100 Bay networks hubs!!
Smart, very manageable hubs.. The 10Mbps ports on the 1900 and Bay networks 301 don't do FDX, but the 100Mbps on the 2900 and Bay networks 350/350T do 10M/FDX..
1900's and 2900's are switches, but don't read too much into the term "hub." Cisco (and Bay for that matter) can be strange in its naming. A bit of trivia. If you look on the copyright page of IOS 9.1 documentation, you will find Cisco trademarked the term "trouter." This was going to be a term for a terminal server/router, until market research suggested it didn't scale well, and customers were not lured to it because it sounded fishy. But progress continued. In the pocket-sized internetworking glossary, they do mention two of the trademarks they registered while exploring the pre-Bay joint venture with Synoptics, which would have joined "router" and "hub" technologies. What were they going to call this? The "Rub" and the "Rubsystem." Someone seems to have avoided yet another changing of foot in mouth. There are 2500 series routers with a small built-in hub. Officially, these are "hublets." I had a student musing "hub? router? why didn't they call them hooters?"
On Fri, Sep 18, 1998 at 12:31:03PM -0400, Martin, Christian wrote:
Jared,
I meant the latter. I knew that there were switch to switch FDX capabilities - I'd never seen a router interface or NIC though. Cool. Know any vendors off the top of your head???
I've used the 3com PCI cards (10/100 cards) at 10M FDX That's it. I stick with them because they work well enough, and aren't too expensive for the performance. I've had them pusshing 100M fdx traffic out an interface before. - jared -- Jared Mauch | pgp key available via finger from jared@puck.nether.net | http://puck.nether.net/~jared/
participants (8)
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Barry L James -
Chris -
Chris Cappuccio -
Howard C. Berkowitz -
Jared Mauch -
Martin, Christian -
Phillip Vandry -
Rich Sena