Switching

Need to upgrade Sup vs-s720 10G 3c from 12 IOS to 15 IOS version. We have 6513 switch with 2 no's of 720 Sup's in one chassis.can some one tell step by step procedures for upgrade the same withs cmd's.I got the version 15  Frimware from cisco site.Pr...

Is it possible to do 802.1X authentication with ACS 5.5 based on the client machine certificate issuer (without joining the ACS to AD)? Example, If the client machine has a certificate loaded that was issued by a certain authority, allow it access. O...

I have a layer 2 network configure for multicast traffic. 1. I have two switches --3750.   Switch1 is the core switch and switch 2 is trunked from switch 1. 2. the multicast server is connected to switch 2 via and access port in a vlan...Lets say vla...

I recently started helping out at a small business where everything was installed and setup before I arrived. The issue I am having is forwarding all requests for ip: 10.141.85.200 which is not on the same network to 192.168.25.221 which is on the sa...

When "vlan dot1q tag native" command is enabled on Cisco 3750E router, the LACP PDUs are getting tagged with native vlan and being sent out of the ether channel ports which is against the LACP IEEE RFC which states that LACP PDUs are always untagged....

Hi, has anybody had any problem with 3650 and connecting to use the express setup? the quick guide says to put into express mode and use ip 10.0.0.1 for switch, the problem is the switch doesn't give out that range dhcp it is 10.0.2.1, the manual is ...

Please forgive what I'm sure is a simple question. I am new to CISCO products and am starting from scratch. In my endeavors to obtain my CCNA I am looking to buy hardware from ebay. If I need to update the IOS and\or firmware, is this something   tha...

Hello,  I have a Cisco 2960S switch,  presently I have a multimode fiber uplink plugged in to it.  base 1000sx , GBIC ,SPF port. can I add  another uplink using Single Mode Fiber , and will they run at the same time on this switch?

FYI:We ran into an overheating issue upgrading 2960x switches to 15.2(3)E2. I just wanted to get the word out, maybe save someone the trouble of an RMA.We upgraded switch to 15.2(3)E2 on the reload it updates Front-end Microcode and fails post for in...

Hi all, our core today is a large stack of 3750's.  Some are X's some are the 3750g v2's, and some regular v2's (100mbps).  Since were a small business we have the majority of our HQ accessable by ethernet so the core is also the access layer for man...

Hi, I have a Cisco 3850 8-switch stack with a Mitel phone environment(mixture of 5300 phones). Users will be on the phone and then suddenly all sound cuts out on both the receiving and sending end for about 8seconds and then returns. One thing I have...