Switching

We're in the process of upgrading 3750 switch stacks in our organization.  The stack varies from 2 to 5 switches.  We have upgraded about 15 stacks so far.  But 2 out of 15 stacks, however, have failed during reload.  We had to disconnect the switche...

Hi,I am trying to get 802.1x port based authentication working on a cluster switch member. All the switches are 2960 series veriosn 12.2 (44) SE2. Only the cluster commander has an IP set and that is configured on the radius server (Windows 2008 NPS)...

Hi All,Just doing some digging here, but can't find any reference to it in any of the docs.We have a few paris of VSS running, and having brought the down-stream access-switches online using MEC we note that the active port-channel that they bind und...

You can configure HSRP in networks that run which of the following protocols (Choose all that apply)?A. Banyan VINESB. IPC. IBM DLCD. Novell IPXE. AppleTalkAnswer: A, B, D, E I believe that HSRP is a cisco-proprietary, so my answer was "B" only.Why t...

I have a swtich stack comprised of three 3750G series swtiches. 1x 12sfp fiber port 10/1000 and 2x 24port 10/1000 ethernet switches in this stack.  I am setthing up a etherchannel connection comprised of 4 cables to a SAN device. I want to balance th...

I am trying to understand how mulitcast works and have read a few documents out there. We have a 6 servers that requires mulitcast, however we do not feel comfortable doing this on our catalyst 6509 because it's our main switch/router and the servers...

I have attached a power point for your review.  We are seeing excessive packets jumping VLANS so-to-speak.  On the drawing you will see XYZ receiver which sends out boatloads of UDP packets (i.e., broadcasts constantly).  We are OK if they remain con...

I'm running a Cisco 871 router in a LAN WAN setup. Nat, site-to-site VPN, Firewalling, etc. The problem is that the router stops forwarding traffic at random. The only way to fix this issue is to reboot the router using the console / powerswitch. Sym...

Hi i am new to this community.I'll try to give as much information as i can.I basically know nothing about networking and routers and such. That's why i need your help, the professionals. So my xbox 360 sits in my room. To playLive it requires intern...

Hello,After running a coupple different protocol analyzers I am seeing 10,000+ fast retransmissions.  Could this be an issue?  I have a lot of clients complaining about slow server response time, and I'm wondering if this could be causing it. What wo...