Question: PROBLEM: Both FWSM in our core switches went active/active and protected subnets have partial accessibility. SETUP: We have 2 x Cisco Catalyst 6509 switches running IOS version 12.2(18). Each switch has a FWSM internal firewall module. Both...
Question: To connect two WS-C2960S-48TD-L Catalyst switch stacks, I use EtherChannel, i.e. I aggregate several ports on each switch to get more bandwidth and higher availability than with just a single port. However, the link doesn't work yet. What could...
Question: Recently i have found that in one of the Cisco WS-C2960S-48FPS-L switches in our environment, portfast enabled to a interface whichis connected to a non-managable switch. But 3 servers are conencted to that non-managable switch. Since this switch...
Question: On a Cisco WS-C3750X-24S-S Catalyst switch, I need to find what port an end device is connected to. I have the IP address/host name. How do I quickly find the port? Answer: The answer depends on whether the switch is a Layer 2 or a Layer 3 switch....
This tutorial documents the procedure for performing a password recovery on a Cisco WS-C2960S-24TD-L switch (and probably other models, as well). 1. Unplug the power cable. 2. Hold down the mode button while replugging the power cable. 3. Type flash_init...
Question: This seems like a simple concept but I'm having a hard time grasping which traffic is tagged vs that which is not tagged. We have a network of primarily WS-C3750X-24T-S switches with several VLANs, and dot1q trunks setup between the switch stacks....
Question: I took some very good advice & signed up for the Cisco Learning Lab. The wording on the intial switch setup instructions & the default gateway is a little confusing. For a switch the ip default-gateway command should be run in the global config...
Question: So basically both arp and inverse-arp are L2 to L3 mappings; simple arp: MAC(L2) -----> IP(L3) inarp: DLCI(L2) -------> IP(L3). But by the word "inverse" I read _opposite of_ , thus implying inarp is the opposite of arp. Can someone elaborate...
Question: Can someone explain to me what a native vlan is? How it compares to other types, i.e. management, default, etc. I am having a hard time with the terms. Answer: I am looking at a network with different native vlans across multiple switches. While...
Question: I hope you can help me as usuall , i designed a layer 3 lab contains 4 L3 WS-C3560X-48T-S switches + Vlans , the issue is as the following : i can ping any pc from sw0 to sw1 but i can't which is weird ping any thing else like from sw0 to sw2...
