Switching

Hello,This is continuation of my previous posts here. I did a lot of research, but I have a problem finding one thing: Is auto-negotiation mandatory on 1000BaseX (i.e 1000BaseSX) interfaces? (in other words, should every 1000BaseX interface support a...

Hi all, I recently had to configure a nortel switch to connect to my 2960, On the interface vlan config, they have tag all option, and an untag pvid only option, which one would I need for my trunk but so it still has a native vlan, would it be the u...

I think I blocked everyone on the network from accessing the Internet via port 80. I was using the Cisco Network Assistant and I thought I was blocking port 80 only for fa0/8. However, I think I ended up blocking port 80 on all ports instead! Now I a...

I have a 3750G switch with servers plugged into it that have very high throughput between them(200-500Mbs), consisting of primarily multicast traffic. I'm showing a good amount of ouput queue drops on some of the interfaces that have server plugged ...

We have been trying to upgrade a switch supervisor to the Sup 720.We have followed the recommendations increased power supply, upgrade fan, however, we did test and bake in the software on an E class chassis in slot 5 and worked for 3 days. When tryi...

Hi all, we had an issue where we had 2 100.1.x.x and 100.4.x.x addresses on our lan that were trying to talk through the firewall, but it was not working, the engineer had to issue a command>norandomseq nailed for them ip's, what exactly does this do...

Is there any way to traffic shape on local vlans...i familiar with traffic shaping on WAN however I never seen this procedure done on local vlan. Please keep in mind that I have a gig port with multiple vlans allow across however I would like lock do...

Hi all, Is 1 discard per second an accepatable rate for inputs on my switch port ?

Hi all,I'm having issue in configuring Vlan-to-Vlan mapping.I'd like to "masking" a Vlan ID "X" in Vlan "Y" for transporting it, using a Layer 2 Trunk starting from a 6500 IOS Switch, to another switch (6500 CatOS)I used command found on Cisco docs a...

Hi All,My client has a 3560G-24Port switch (Ver12.2(44)) as core. Now we are planning on moving backup server to this location where backup will run from remote sites to the servers at nights and will take lot of BW. 3560G location has a Gig P2P to a...

Is there a switchport command on a 3750 switch that will only only 1 mac address so that end users can't plug in their own hubs/switches?I don't want to maintain a mac table, just allow any mac but only 1 mac.

Hello,Here's the problem. There's one Juniper SSG 20 firewall with JX-SFP-1GE-SX multimode fiber interface (850nm) (which I can control) and I have to connect it to Cisco 4506 switch which has WS-X4306-GB module and WS-G5484 GBIC interface (also mult...

Hi,I have a question about "priority percent" command.I want to deploy QoS at customer network to make sure voice traffic with DSCP46 and be treated with highest priority. All the packets makred with DSCP 46 will be put into LLQ on Cisco 3845 router,...