What if the world blows up?.........
The Autoswitch is a very simple device utilizing simple physical relays and
voltage censors. I have never seen one die.
Cheers,
Lance
>From: "Tim Harkin" <[EMAIL PROTECTED]>
>Reply-To: "Tim Harkin" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED], [EMAIL PROTECTED]
>Subject: RE: CISCO SWITCH
>Date: Tue, 10 Oct 2000 08:24:05 EDT
>
>What happens if the Autoswitch fails? Ahh, the joys of fault tolerance:)
>
>
>----Original Message Follows----
>From: "Lance Hubbard" <[EMAIL PROTECTED]>
>Reply-To: "Lance Hubbard" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: RE: CISCO SWITCH
>Date: Mon, 09 Oct 2000 15:57:36 PDT
>
>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
>> > >
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