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Peter, You should look at the STP Thread. Look at my configuration for the 2950. I get less than 1 sec failover using Rapid Spanning Tree with Port Fast and uplinkfast. In the config shown, I have two 2950's hooked together but eventually, I will have 4 hooked up just as you are suggesting. I...

Peter, Portfast is only good for edge devices. Uplink-fast is used for switches. If you look at my configuration above, you can see the set up used. Don

Peter, I know it blocks redundant links. It is just curious which links are getting blocked. Those links on my A switch (one 2950) are being opened and on the B switch (the other 2950) are being blocked. I like the way it is working now as long as they go from blocking to forwarding in under...

This is what I did. I am getting sub second failovers between the 4 switches. I set the spanning-tree cost to 1 on the two Gig ports that make up the channel. Spanning tree summary shows a the root is Vlan 1. No blocked ports are shown on switch A but on switch B, the 2 redundant ports of the...

One of the best experiences I ever had was when we were conducting a joint demo with Cisco and thier equipment was in one of our racks. At the top of this rack was one of my Extreme switches. It promptly got used as a holder for thier network drawings. I used to take the drawing off every...

What I really want to do is set the bridge priority on each port. Is VLAN priority Cisco's name for it? I keep getting confused by Cisco names and everyone elses. (Witness: Channel vs aggregate for port trunking).

I use Extreme switches because for the cost of a Cisco 2950, I get Vlans and routing.

Sorry, that makes no since now. I have 2 2950's and 2 dumb switches. The 2950's are connected via a Gig channel. The 2 dumb switches are connected to two other ports on the 2950. Each dumb switch has a connection to each 2950. The rest of the post I hope is clear.

I have a GIG Channel Port connecting two Cisco 2950's and 2 layer 2 ethernet switches that are connected to both 2950's for redundancy. STP insisted on using the port that the dumb switches were connected to as the root port. To counteract this, I made one 2950 the Root switch and the other the...

Just to tie up this thread, we eventually discovered that the VPN had problems with packets greater than 1400 bytes. So, we reduced the MTU on the Sun to 1400 and packets are successfully being transmitted in both directions.

Tunnel to Tunnel traffic. I have ftp servers (Suns) on both sides and both 1721 routers have NAT running on them. So I can't see any difference in the NAT config on either one except one side has a lot more static routes. The full 'show runs' are below. India side can't ftp to me and US side has...

I have two 1721 routers with a VPN configured between the two. We have two sin servers on each side. On one side everything works. On the other, certain programs like ftp and ssh fail. They time out. Looking at ftp, it is hanging on a socket read. PC's seem to transfer data fine and I did get...

Typically you do not have the switch on the very edge of your network. They are not firewalls so there is usually a firewall in front of the switch. The only thing you could do for DOS would be to look at the web page of the Summit and look for higher than normal port activity.

The nvram thing is no big deal. I have a couple of Sparc 10's and an IPX that I have resurected from the dead. The IPX still complains about the OBP but thier are some excellent resources on the web for correcting IDPROM issues. You can even poke values into it including mac address if your so...

OK, I see how to do it but how costly is it? Memory, CPU? We have Netra 240's with dual 73G hard drives. Management wants to consider disk mirroring. My inclination is to decline as I am afraid the overhead of SDS could be expensive. The disk is used not only for boot but for operations and most...