Switching

I've supplied a proposal to a customer for a new campus LAN that includes a management VLAN for their (circa) 100 switches.The customer have questioned the need for the management VLAN and other than the fact it's best practice and improves security ...

Hi, first post,I got Wendel Odom's 640-822 Cert guide and I've been working through it over the last couple of months, great book. I just started the network simulator labs (Lab 1: Configuring IP Addresses I), and of course I got stuck immediately. I...

Pleas help.  I have searched for days, through all documents I can get my hands on.  I am trying to configure my 1841 router to connect to my DSL over POTS from Centurylink.  I have a static IP.  I have contacted tech support with Centurylink and obt...

We have Cisco Catalyst 3750X-48T-S Switchs in our environment. Currently, all are loaded with the 12.2.58-5E2(ED) IOS. Review of the available IOS's for these switches shows two possibilities. The 12.2.58-5E2(ED) IOS was last updated in July 27, 2011...

greetings all,    i had implemented new switch in our client Data Center . after 1 week later, the switch restarted and from the show version it is said that "last reset from address error". From the crash_info file, it looks like, the switch was exp...

Hi,Is fragmentation taken care on layer 3 switch compared to a router. I have 2 deafult gateways in my network, one is on the router and the other on the switch which are in the same VLAN.When i try to access the other side of the network which is a ...

We are trying to replace the CSS between our firewall and DMZ with a BigIP.  Among it's other functions, it will act as the router between the firewall and the DMZ. To make this work, I need to assign vlan tags values for the vlans I create on the Bi...

Is it possible to configure MST on ASR and have rapid-pvst on 7600? can they interoperate? ASR sees no BPDUs and both are root bridges.

Hi,i have an requirement on switches, if a logged user is removing  TACACS configuration it should send an auto alert messages. How can this be achieved. Is it possible by EEM script?If yes please helput in the script.Regards,Ajith

hello!I have 6500 with this STP configuration:spanning-tree mode rapid-pvstno spanning-tree vlan 1-4094I need to enable STP on vlan 100 and vlan 103.When I do "spanning-tree vlan 100,103 root primary" and then "show spanning-tree".I see that STP is n...

Is there anyone that knows or can test in a lab what would happen if a tech mistakingly added "switchport voice vlan XX" to a trunk port? I am try to do some RCA on an issue and this has been identified as a possible cause by one of my techs.The conf...