Cisco Switches

problem encountered between 3com 4950 to catalyst 500

I encountered a problem between the connection of 3 com (4950) to catalyst express 500. 3 com is located in the server room and act as our distribution switch, from server room it is connected to catalyst 500 using fiber optic cable (multi mode). I connect the 3 com to the sfp uplink of the...

nexus 5020 keepalives

I do not have the option to do a 'no keepalives' on an interface like i have on other switches. did the 5020 do away with this option.

Configuration between L3 switch 3750 and L2 switch 2960 via trunk port

I am going to connect three L2 switches 2960 from L3 Switch 3750, means all three L2 switches are connected to L3 switch via trunk switch. Thanks & Regards, And i am going to configure VLANs on L3 Switch. So plz let me suggest,if both switches are in server mode then i should configure VLAN on L3...

Free Chapter - Implementing Multicast on Cisco Catalyst Switches

Another free chapter download is available on the IT Bookworm Blog. Written by: David Barnes and Basir Sakandar Book: Cisco LAN Switching Fundamentals Overview: "Cisco LAN Switching Fundamentals provides an easy-to-understand introduction to LAN switching best practices using Cisco Catalyst...

Cisco 3524 and 2610 vlans

Hi im trying to get my head round if this is at all possible. i have a load of 3524 switches and a single 2620 with 1 ethernet port. is it possible to have setup in this configuration with the equipment i have this part i am ok with and understand vlan6 - switch management 10.0.6.1/24 gw...

Cisco Catalyst WS-C6506 - link termination question

I need Help for one of our solution on our site. Senario We have a simple campus network on our site where we have Core, dist.and access Switches. Two Core Switches that are C6506 having redundancy. CAT6507 Chasis WS-C6506 SUP WS-X6K-SUP1A-2GE MSFC-2 WS-F6K-MSFC2 1000BaseX Ethernet...

How to create VLAN with this Cisco configuration

Dear Sir, I have 1) DNS & Exchng Server 2003 with DHCP enabled Win2003 Standard Edtn SP2 , 2) ISA 2006 3) Trend Micro Antivirus Server. I have to create VLAN for 3 Dept. with having 3750 Cisco Switch as routing ( Trunk ) Using 2950...

Connecting data closet switches to the core with redundant links

I'm moving our flat network which covers a three-story building and about 450 users to a subnetted network. I would like to know about connecting data closet switches to the core with redundant links. Can I implement OSPF on the core and connecting switches and eliminate spanning tree? In this...

How to put Access Control List in Cisco WS-C2960-24TT-L

What are the commands to put Access control List in cisco WS - C2960-24TTL

How to restore the start-up configuration of a Cisco switch

I have a 2950 Cisco switch, the command that I used is "erase startup-config". After using this command I reloaded the switch and when it asked me to save the changes I said yes. Now whenever I use the switch it does not take me to the user prompt anymore but in fact all I get is switch: I think...

Virus Alerts on Cisco Switches

We have three layers in our network Core, Distribution and Access this is an Campas network wherein all the users are connected to access layer.I wanted to know that is there any command which will aleart me on my Switch either on Core or Access for Virus which is on the users PC by showing MAC...

How to check the loop in Cisco switch

How to check the loop in Cisco switch

On a Cisco Catalyst 6500, both supervisor cards in hybrid mode sync up automatically in terms of both operating system and configuration

On a Cisco Catalyst 6500, both supervisor cards in hybrid mode sync up automatically in terms of both operating system and configuration

Fiber Ports on Cisco 2950 24 port switch

I have fiber connected to my 2950 but it does not work. I did a light test with the fiber strands and they are good. Is there anything else tyhat I am missing that must be done.

How to set up a disaster recovery (DR) VLAN to replicate data

I am new to disaster recovery (DR) and IT management. I have a production site with Cisco switches, and I'm backing up data to a storage area network (SAN). I have a GB link to a remote office and would like to replicate data to another SAN at the remote location. How do I set up a DR virtual LAN...

Routing Public Emergency Calls Based on Cell of Origin

Is it possible to route emergency calls based on the Cell of origin? In a private network, there is one subscriber who wants all emergency calls originating in one specific area to be routed to a special emergency desk. All other emergency calls within the network would be routed to a different...

Securing against rogue DHCP servers

Looking for an example of how to configure Cisco DHCP snooping. Can someone provide example settings - or point me in the right direction? Many thanks. Moderator Note: This is a user submitted question

How can i configure a port for multiple vlan at Netgear FS728TS (like "trunk port" at cisco switch)

i have an Netgear FS728TS switch and i have to use 2 vlan with an cisco switch. (i have no problem about cisco switch configuration) vlan name=Default vlan ID=1 vlan name=AP vlan ID=307 there is F/O cable connection between two switches. 1/g1 port using for this F/O connection at Netgear...

Setting up Cisco 2950 switch

Hello, New to itknowledge exchange... I have a hand me down Cisco 2950 12 port switch. I currently have assigned to my Cable Modem4 Static Public IP's Note: Not real but used for example. 70.66.131.1 70.66.131.2 70.66.131.3 70.66.131.4 I run 3 servers in my basement all of which I have...

Performance of Cisco 3750 Layer 3 switch

Hi guys, I have a cisco 3750 series L3 switch. It can currently handle 3GB of L2 traffic with no problem, but when faced with 40MB of L3 traffic, CPU utilization shot so high that I can't even telnet to the switch. Could anyone enlighten me please? Thanks in advance!!