Switching

Hi Everyone,We will be connecting Cisco 4507 with Extreme Switches. We ran into spanning-tree issues last time. Extreme does not understand spanning-tree. So what i am thinking it to prevent bpdu advertisement from 4507 to extreme switches and also p...

I have been trying to make a stack with two 2960S. They have the same IOS but they behave as they were not connected.One is in production and I am attaching a brand new one to it; in the one that is in production I get these 2 messages:FlexStack Modu...

I am working on setting up dynamic redundancy between two ISP's.  I do not have a /24 block assigned so BGP peering is not an option.  The site is remote and I dont have the ability to easily change the way things are connected.  Here is the architec...

Hello, I just noticed on a router configuration the the command "spanning-tree mode pvst" has been entered. Is there any reason why a router would require this command in it's config file or is it just a mistake that it is there.Thanks.

                   Hi, I have configured the ip telnet source-interface Loopback 0 command on a Nexus7010, but when I telnet to another device and do a show users, the ip address is of the closest interface to the device I telnet to, not the ip addre...

Hello,I am trying to figure out what is heat dissipation of a C6509-E configured as follows:1 x WS-C6509-E-FAN1 x VS-S720-10G-3C1 x VS-F6K-PFC3C8 x WS-X6748-GE-TX8 x WS-F6700-DFC3C2 x WS-CAC-6000WI have tried two ways: 1) the power calculator and 2) ...

I have an SF-300-24 port switch and am having an issue. When a device says "Who has 192.168.0.1" (which is the default gateway) two devices are replying in the affirmative, and therefor the MAC address table is getting screwed up.  I know the correct...

Hello everybody I have one case:My catalyst is a 6509-E which has a supervisor VS-S720-10G-3C and i want to Use the 10Gb uplinks in order to connect it with a UCS 6248 FI.After checking diferent datasheets i decided to use the following module: Cisco...

hello guys: I'm currently planning a network with a few VLANS. Unfortunatly, I'vegone into somw trouble of solveing this! This is what I got: basic requirements:1. all vlans are not able to communicating each other. 2. all vlan hosts can access serv...

Is there a way to find out the passive switch port of a bonded/teamed NICs?  Any features on Cisco swiches that can generate control-traffic to the passive NIC to indentify which swich port it is connected? or any other logic that is applicable?

Hello guys,I have one question. Little off the track.I have done ccna and one paper of ccnp (642-812-Switching).Now my question is if I do Route (642-902) and TSHOOT will the CCNPcertification be done or I have to sit for the Switch(642-813) again.I ...

Hi,See attached diagram.We have 2 data centres which are connected together via a layer 3  point-to-point link and 1 office which is connected to each of the data centres  using metro ethernet. The interfaces connecting the metro ethernet will be  ro...

I have a 6500 switch and i recently removed a module (line card) from the switch. The problem is that the port configurations of the removed module still exhists in running configuration. I was not aware of the right procedure,http://www.cisco.com/en...