Switching

Hello,I have a issue with a specific laptop.When it gets plugged into  vlan x I can see port-security errors! If i remove port-security config from the port it wont get an dhcp.If I change the port to vlan y it works straightaway with or without port...

I am working on a project at work and need some suggestions. I need to develop a LAN health check process/guideline to perfrom LAN health checks.I am evaluating some tools from Solar Winds and would like to try some from cisco, any ideas on what i co...

We have an ASA 5505 and Cisco 1240AG wireless Access points. We have the internal LAN, and a public and Private Wireless networks on different Vlans. The organization is an arena so at times we have a lot of people on the public wireless. When this h...

  Hi..  I have recently added a 3550 switch in my network. This switch Fastehernet port connect to distribution switch 2960 Gigabit port. Fastethernet port configured with trunk and dot1Q encapsulation and 2960 Gig port is with trunk only. When i con...

Hello guys,We are having troubles with some virtual servers (virutal machines) these servers are shuting down with out any advice while are working! we are cheking the network, some day a Cisco TAC guy told me about show proccess show processes cpu h...

Hi there. I think this might relate to "Q-in-Q", but I've no experience with this topic and I might be wrong in the way I want to achieve my goal. So here's the situation:I have a device which on its eth1 port has an untagged VLAN (1) and a tagged on...

Hey,We'd like to know what is the different between Cisco SFP+ copper passive twinax cable and active cable?We test some Siemon passive SFP+ 7m and 10m copper cables and these cables passed our lab test ( link between nexus 5548 and FEX link).Is that...

i have the following topology R1--- SW----R2if i configure R1 & R2 with MTU 2000 and the L2 Switch has a maximum MTU of 1500.what happens for the packet flow in this scenario ?

Hi there, we are using new Layer 3 3650 switches which has inbuilt wireless capabilities but i need configuration so can plug some AP's to it. WS-C3650-48PS      03.03.03SE        cat3k_caa-universalk9could some one please share there basic config so...

I have 2 switches (3550s) connected in a 4 interfaces LACP trunk.Show etherchannel summary shows all ports happy on both sides.However, show cdp neighbors shows 4 interfaces on one switch, but only 1 interface on the other switch.Restarting the port-...

Hi all. I trying setting the environment with GEPON and CISCO C3750X, I have the follow topology.  The equipment GEPON have interfaces OLT(optical Line Terminator) with port fiber and port gigaethernet. This port is connnected port switch 3750x, port...

Hello Everyone,I tried to install an ASR 1001 today (an addition to the existing network at a different DC) and I just couldn't get OTV to work.Am I missing something, is something wrong with the config?AED says: No, site interface not up :-/ (This i...