Switching

Hi all, I want to understand how cisco places its firewall in datacenter. I mean, lets consider a scenario where there is 1 6509E switch with SUP 720 providing 720Gpbs backplane. They have around 50 servers connected over 1G (few of them using port c...

I have a Cisco 2960s stack. I trying to trunk a port with an Avaya POE switch. Port is trunked on the Cisco side correctly (I believe). When you configure tag all on the Avaya side, I lose all communication with that switch. Only 2 VLANs on both swit...

Is there any method to improve etherchannel performance? Please be kind throw some light here. Thanks.

Hi,I have got an cisco router with 3 interface. Interface FA 0/0 is an outside interface and interface fa0/1 and fa0/2 are inside interface.Int Fa0/0Desc Connected to Outside, the inside internet traffic passes through this routerip address 192.168.2...

i need to use an alternative solution on swicth to protect untrusted ports to ristric the ip trafic without using DHCP Snooping? what are the alternative we have?

Hi everyone,I wish to deploy DAI (Dynamic ARP Inspection) for a non-DHCP Environment where all connected hosts are assigned with a static IP address.ARP ACL as recommended in Cisco Docs can be used to achieve this so that ARP spoofing / poisoning can...

Can you have 2 Sup2Ts in one chassis and one Sup2T in another in VSS?

Hi,we are running a VSS-1440 (Two 6509-E) with VS-SUP2T-10G and WS-X6904-40G. The WS-X6904-40G have FourX adapters installed. They are configured in non-oversubscription mode:#sh hw-module switch 1 slot 1 oversubscription port-group      oversubscrip...

Hello all,i`ve been facing some issues lately. we use tacacs+ for our switches to authenticate and authorize. But we noticed that no matter username is, when we type password "cisco" we can log in to switch. Anyone faced this issue before or know why...

Hello,i have ASA5505 and a Linksys router. The question is how can i build a VPN tunnel between them?I have installed DD-WRT Standard Generic and VPN Generic on the router. I made a VPN tunnel in the ASA with the Wizard Site-to-site VPN but i don't k...

We have a cisco 3845 Router. We have 2 proxies running and both are given a one to one nat on the router. Last week an IP NAT rule of the first proxy has disappeared from the running config, but still listed in the startup. We have restarted and the ...