Switching

Hello,I have a troublesome computer that someone brings in every night and surfs the Internet, when they should not be. I would like to block their mac address not on just the port, because they can plug in somewhere else in the building. I would l...

Hi, I am looking for a switch that has one 10G uplink port (more are not needed)and the others can be 1Gig ethernet ports.It should support stacking too.I found this one but I don't know if it is stackable.Cisco Catalyst 3560E-12SD12 SFP Gigabit Ethe...

Hi, I want access to my switch but the IP address is different.I get the IP address from my router (show cdp neighbors entry *)and was obtain 2 IP address (I have 2 switch) one IP address is correct but the other address is diferent (is the internal ...

Hello,I am trying to configure vlan-base on a 3750ME interface but I get the following message:vlan-based not allowed for non-layer-2 interface GigabitEthernet1/1/2This interface is configured as a L2 trunk. The config is the follwing:interface Gigab...

Im trying to get a deeper understanding of the QoS settings on a 6509 port. I pulled the following from a port that the port QoS settings were populated with AutoQoS: switchport trunk encapsulation dot1q switchport mode trunk shutdown wrr-queue band...

We are trying to bridge multiple vlans over Serial link. We have followed instructions given here:http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gt_bcp.html#wp1046286. I have turned debugging on the bridge, and both side show vlan mat...

Hi,I will be upgrading IOS image on RSM Cat5509 from 11.2 version to 12.2 . Do i also need to upgrade bootloader image?also what is the significance of bootloader image in the boot process?boot bootldr < >boot system < >

Hi all,I just started testing IPv6, and this question regard address autoconfiguration came across.If I have static routes pointing to a gateway IPv6 address automatically assigned (IEU-64) and for some reason I have to replace this gateway, the gate...

I am trying to get a better understanding of the campus qos and after reading several things on this, I am afraid I have to ask some questions about it:Below is a standard cos to dscp map:mls qos map cos-dscp 0 8 16 24 32 46 48 54I have tried to find...

I can ping from Server 1 on Subnet A, across the WAN, to Server 2 on Subnet B with no problems. Full response, no lost packets. But when I try to ping Server 2 on Subnet B from Server 3 on Subnet B, I get a reply on the first packet, then the rest t...

Im confused about something, maybe someone can help.I am on a router that is running OSPF and BGP.It natively advertises a network using the "network" command under its BGP process.But I am getting a strange output from the "sh ip bgp <prefix>" comma...

Hello,I was hoping to streamline this configuration. I have a 2950 that I would like to use for monitoring traffic by placing in-line anywhere.Here is the catch, I do not know what Vlan it will be plugged into at anytimeI would put a PC with Monitor...

We have a server that utilises multicast to create a virtual IP entity, from what I understand Cisco switches/router block multicast by default and therefore any traffic designated to the IP.To resolve this issue we need to add the virtual IP entity ...

Here is the scenario. 2 3750s stacked.1 3750 spare (Not in stack)if say a 3750 dies that is in the stack, and you replace the other 3750 with the spare will the config of the old switch move over to that new switch. I want to say no it wont, for vari...