Switching

Hi,our LAN topology consists of several distribution switches, we have Car4500x with VSS.a few months ago we replaced one of our distribution with Cat9500 StackWise virtual.we have VRFs and use PBR on some SVIs to prevent interVLAN routing on the L3 ...

I am upgrading our network solely and decided on the 9500 and 9600 to replace our 6509s since they are aging and have limited life left.  For the cores I will use two 9606 with SVL and only install 40/100 interfaces probably. At  some of the smaller ...

I have a question about port security.  I am doing an assessment of a new network and ran across the following on one of the customer's switches: interface FastEthernet0/4description User Access Portsswitchport access vlan 20switchport mode accessswi...

Hi Everyone, We have just purchased 4 Devices with DNA Advantage 3 yr License and I have been told to activate its license to each device. But upon looking with instructions on the internet I always end up wondering how it is really setup. Could you ...

Hello, I have new VOIP phones which are automatically getting set to the Voice VLAN.  (VLAN 20).  My DNS and DHCP servers are on VLAN 1.  Right now I'm trying to configure my VOIP Phones via my desktop which is on VLAN 1, however the traffic isn't cr...

We are experiencing an issue with authenticating user PC's on the network when they are connected through a Cisco IP phone. This was previously working fine, but since a switch IOS upgrade, we are seeing sporadic errors where the users MAC address do...

Hello, Is it possible with a command line to force the switch (2960/3650...) to register his own host name in the DNS with its IP @? Tx B

I am replacing two 6504 core switches with Catalyst 9407R switches. I have one in data center #1 and another in data center #2, running HSRP. They are about 400 yards apart running 10G fiber between them. There are small configuration differences bet...

Hello,I have a situation where a device that's in vlan A isn't accessible to the network. I have a 2960x switch. Two ports are configured for vlan A. A device with a static IP address for vlan A isn't reachable outside of the switch. The only way to ...

Hi Everyone, I'm redesigning our network at Company HQ, this design will likely be rolled out across 3 or 4 other admin sites. Our routers are connected to a BT provided MPLS network (Corporate WAN with BGP). BT will be configuring HSRP on the router...