Foster City (zip 94404) The Liquidation Capital of Northern California.
There was some mild rolling, window blinds swaying, minor ripples in the
coffee cup. Not enough to knock our 172.16 down to 86.8
Dave Hilton
Staff System Administrator
entelos(r)
Foster City, CA
"Notice: I tend to become apprehensive when my position in the food
chain becomes ambiguous."
It's happening up the coast too:
http://seattletimes.nwsource.com/html/localnews/2002048122_sthelens28m.html
"Scientists believe there is a significant chance of a small eruption
of Mount St. Helens in the days or weeks ahead."
Is anyone of you awared of the existence of an access switch router (L2/L3) with GE interfaces and 10GE uplinks? I'm looking for something small (around 1U to 2U). Is there any vendor selling such a product?
Thanks,
Fred
Frederic NGUYEN wrote:
Is anyone of you awared of the existence of an access switch router (L2/L3) with GE interfaces and 10GE uplinks? I'm looking for something small (around 1U to 2U). Is there any vendor selling such a product?
http://www.extremenetworks.com/libraries/prodpdfs/products/Summit400_DS.asp
The Summit 400 is an excellent L2 unit but a bad L3 unit. It is
route-cache based with only a few thousand cache entries. Put more than a
thousand flows (flows=destination IPs) on it and it'll choke.
Catalyst 3750G - 16TD
-Bill
Catalyst 3750G - 16TD
Just a note, if you want redundant 10GE uplinks you need to get two of these and stack them. The stacking interface does not reduce the amount of switching bandwidth to the front ports IIRC.
Deepak Jain
AiNET
Mikael Abrahamsson wrote:
The Summit 400 is an excellent L2 unit but a bad L3 unit. It is
route-cache based with only a few thousand cache entries. Put more than a thousand flows (flows=destination IPs) on it and it'll choke.
I don't promote or use Extreme in my networks, but I knew about the product. He asked, so I just sent the link along. All that was requested was 10G and 1U/2U... so there you have it. I didn't reply to debate why Extreme sucks.
Every manufacturer sucks in some respect. The S400 doesn't suck in an L2
aspect, it just sucks in an internet L3 routing aspect.
I can tell plenty of suckage on the Cisco 3550/3750 for instance, but
certain people seem to like it alright anyway.
...and the stacking interface is actually pretty lousy, from our testing.
We were anticipating really liking it, but we haven't touched it again,
since our lab work. Obviously it precludes hot-swappability, but beyond
that, using it wipes any preexisting configuration on all but the first
box (and out of two, I don't know how to predict which it will decide is
first, in advance), and it leaves the port-numbering screwed up on any
boxes that have used it, in perpetuity.
-Bill
What we do is to use the "priority" setting in the 3750 to determine who
is the master.
switch(config)#switch 1 priority 15
This will define that switch in the stack as the highest priority, then
set your next one to 14, etc etc through the stack. That way you will
always have deterministic elections.
When you lose the switch, the next one will take over.
Robert Hayden
Unviversity of Wisconsin Madison
Extreme makes such a device but it is not truly wirespeed i.e. it goes
wirespeed on ports associated with a particular ASIC but the ASIC to ASIC
links apparently cannot forward a full ASIC to another full ASIC without
dropping frames. But that may be an academic concern and is unlikely to
happen in most network environments as most real world environments do not
generate sustained flows of hundreds of Gbytes as do research
environments.
But YMMV
Scott C. McGrath