Switching

Good morningA 6509 switch of one of our costumers presents the "ip helper address" configuration. Actually, the real DHCP service is located in a Windows Server.This feature works fine, but we are facing some issues related to the security policies r...

hi , i  have a toplogy as below :http://www13.0zz0.com/2014/08/17/12/125759738.pngim wondering which is the best choice to root bride ?is it Core-1 switch at the top ?? or distribution-2 switch in the middle of the network ?? note that core 1 is the ...

Hello,I'm trying to come up with a solution to add DHCP to a LAN config similar to the diagram below:  InfoBoth cores are connected via an etherchannel.VLANs 30,40,50,60,70.Both cores are in HSRP groups for each VLAN (for example "standby 30 has an I...

I have a problem with 4 cisco 2960-s Switches in a stack.2 of the switches are 2960-48fps-l1 is a 2960-f48fps-land 1 is a 2960-24pd-lThe problem I ran into is the 2960-f48fps-L was running version 15 out of the box so I got a version mismatch when I ...

Not sure if this should be posted here or in the ASA forums.  I have an Active/Standby pair of ASA 5515x connected to a 2960S stack.  Connections look like so:     ASA 1------Failover interface------ASA2      |                                        ...

Do Cisco engineers review this community at all? I am working on the latest version of QoS standard for our Enterprise and noticed the following conflicting information officially provided by Cisco. My question relates to ingress/pre-ring Strict Prio...

Hitoday i add a host in a vlan, but it can't ping itself and get  ping transmit failed general failure unless remove the spaning portfast command. i try difeerent vendor PC, IBX... ,HX..,DXl..., all host can't ping itself.the reason is the portfast? ...

Hello all I was hoping someone could help me with this. In nice plain simple langauge what is the best way to remove all configurations from a 4507 that has dual supervisors (redundancy SSO)? I have read that you need to: 1. Remove the standby superv...

Hi guys, for me it is new, so i would like to ask that what is different between QinQ and vlan mapping. I hope all guy let could explain me. Thank

Gents We have three WS-C2960S-48TS-L swicthes which are working as standalone i want to stack them for proper redudency and efficient network design. I have checked it from cisco website and it says that it can be done. I need to know what i have to ...

First main question I have is, is an Appliance port supported if you connect from a Fabric Interconnect to a 3560 Catalyst switch to access the iSCSI drive behind it?  If not what other setups can I try? 

Hi, I have a WS-C2960S-48FPD-L and for some reason some ports will not supply power, all the ports are configured exactly the same and power is set to auto on all ports. But so far there I have three ports that just won't give power. I don't see any ...

Hi Everyone,I do know that the stackwise cable is:Model   Speed3750:    64    Gbps3850:    480   GbpsAnybody know other 3xxx series StackWise cable speeds? Thanks! :D