03-19-2007 07:30 AM - edited 03-05-2019 02:59 PM
Hi all, Can anyone tell me if its possible to have somekind of port failover on a switch, ie if port 1 goes off port 2 comes on?
cheers
Carl
03-19-2007 08:08 AM
Carl,
Which switch is this? You can configure flex links to achieve the same on the switch.
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3560/1225sea/3560scg/swflink.htm
HTH,
-amit singh
03-19-2007 08:42 AM
this will be on a 3550 switch
03-19-2007 09:23 AM
Isn't Etherchannel a good solution for this ?
What do you want to connect with this ?
if it's switch to switch then STP is your answer. If not Etherchannel with teaming on the server side.
03-19-2007 09:26 AM
there will be 2 transparent firewalls connected, its like this switch A --firewall x 2 --switch B , Could I use flex links in this ?
cheers
Carl
03-19-2007 09:34 AM
we can configure the flex-link on 3550 switches to provide the backup to a layer 2 interface.
As you have firewall connected to the ports, I would suggest use flex-link with MAC address-table move update feature if this is not configured and port 1 goes down, port 2 starts forwarding traffic. However, for a short time, switch keeps forwarding traffic to port 1 which is down.
HTH
Mohmmad Imran
03-19-2007 10:02 AM
Carl,
Flex links is supported on 3550's starting with 12.2(25)SE series.So you have to upgrade the IOS on the switch to support the flex link feature.
I havenot tried it using the firewalls as you are designing, but its worth try giving a shot.This might work. use only one switch and connect 2 firewalls to it and then configure one switch uplink to firewall 1 as the primary link and the other uplink as the secondry link.
I am attaching a brief topology diagram for your refrence. Try configuring your 3550 switch with the above toplogy and configuration.
HTH,Please rate if it does.
-amit singh
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide