Shore Microsystems makes a "Autoswitch", which dual homes to two
Access-layer ethernet switches. Workstations are plugged into the
autoswitch, which uses a voltage censor to detect link failure from either
of the Access-layer ethernet switches. The autoswitch then uses physical
relays to "autoswitch" the workstation connectivity to the alternate
Access-layer ethernet switch. The autoswitch is able to perform this
failover in mere hundredths of a second.....behold......
switch switch
\ /
\ /
Autoswitch
|
|
Workstation
cheers,
Lance
>From: "Ejay Hire" <[EMAIL PROTECTED]>
>Reply-To: "Ejay Hire" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED]
>Subject: RE: CISCO SWITCH
>Date: Mon, 09 Oct 2000 17:20:04 CDT
>
>A better solution is a Switch with built-in failover. I.e. redundant Power
>supplies/Pocessor Cards. Equipment doesn't fail often, and with hot-swap
>and hot-spare technologies, you can take it off of your worry list.
>
>NOTE: Please disregard this message if you work in a Nuclear Power Plant,
>or Weapons of Mass Destruction Facility.
>
>
>----Original Message Follows----
>From: "Iohan Reyes" <[EMAIL PROTECTED]>
>Reply-To: "Iohan Reyes" <[EMAIL PROTECTED]>
>To: "Pushkar Shirolkar" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>
>Subject: RE: CISCO SWITCH
>Date: Mon, 9 Oct 2000 16:40:42 -0400
>
>Ummm...I don't understand how you can provide a switch failover solution at
>the access layer. So, if you have a 24-port switch, with theoretically 24
>workstations plugged into it, you want it to failover to another switch if
>it fails? You'd have to physically unplug all those cables and plug them
>into the new switch! Or maybe you can have two NICs at each workstation
>plug each of them into two separate switches....what mechanism would you
>use
>to do the failover then - Spanning-Tree, RIP?
>
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
>Pushkar Shirolkar
>Sent: Monday, October 09, 2000 7:36 AM
>To: [EMAIL PROTECTED]
>Subject: Re: CISCO SWITCH
>
>
>hi,
>thanx for the reply .....
>but i want the switch failover solution .. not the backbone failover ..
>what
>if the switch itself fails .. does it failover to another switch ... does
>it
>have any specific failover port ?
>
>Pushkar
>
>Bob Watson <[EMAIL PROTECTED]> wrote in message
>[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > 3524xl series has some redundancy functions to it if you are refering to
> > backbone failover problems. ie using 2 gbic cards to different backbone
> > connections and such.
> >
> > Also has the router IOS built in which has it's own pro's and con's
>associated
> > to it.
> >
> > Pushkar Shirolkar wrote:
> >
> > > hi,
> > >
> > > i have a requirement that says that i need to have a redundant cisco
>switch
> > > .. i.e. there is a LAN and the if the switch fails .. the other switch
> > > should take over. this is possible in the cisco 6000 series of
>switches
>...
> > > but is there some lower end solution .. that costs less and also my
> > > requirement of ports on the switch is also less ... say about 24 ports
>...
> > > is there any product available which does so .. in 3500 or 2900 series
>?
> > > like using ISL (inter-switch link) .. but for the lower end switches
>...
> > >
> > > Please reply ASAP
> > >
> > > thanx
> > > Pushkar
> > >
> > > **NOTE: New CCNA/CCDA List has been formed. For more information go to
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>
>
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