Switching

Hello,According to the documentation the IP Helper Address can either be a single IP address for a server or a network address.I am a bit unclear which "network address" it's refering to, for example in a 172.20.10.0/24 network would the "network add...

Hi,1) Spanning-TreeI would like  to know if the Spanning Tree forwarding state is applicable to the designated  and root port. I read at many places that Spanning-tree supported the following states and rolesSpanning-Tree States                    Po...

Hi everyone,I'm trying to change my office's router (a D-Link) for a Cisco 1841.The current router works for internet access but I need to do some new things which are too tricky to achieve on D-Link's user interface.The network diagram is attached.I...

Hi,I would like to add some resiliant features to the existing LAN.  Initially, I proposed to use 2960S switches stacked together (see proposed network architecture 1 below).  However, owing to budget constraints, I have amended the proposal to use 2...

I'm trying to run a trunk over a four port Lacp group to a netgear switch form a 3560 but am getting stuck. Everything works fine if I setup a trunk using a single standalone port, and everything works when I use a Lacp group in 'switchport access' m...

Hello,  Thanks to jon.marshall's help, I was able to get a secondary ip address on Vlan1 of my router. I have assigned secondary ip addresses to my servers (DNS, WINS) and I can ping them on the old class C subnet and on the new class B subnet. But I...

I have two questions,1. Must portfast be configured on a port that connects to an IP phone?2. when you enabled portfast, it means that the otherside doesnt involved in STP root elections. is it right?thanks,Han

Hi Experts,Today i have checked root bridge of a network topology of our client's. It is showing root bridge as an access layer switch.That topology is like belowaccess --> Distribution --> coreFrom distribution there is reduntant connection to two c...