Switching

I have a trouble with settings on cisco 3650. Inspite of authentication via 802.1x was enabled according to manual from Cisco I don't see unsupported 802.1x devices switched to guest vlan (Vlan 99 in my case) as I expect. Settings on port are: interf...

Hi all, Plese suggest how do I How to configure single dns server for all the VLANs in cisco 3560 switch? Thanks

We, have a new 3850 stack with four switches. At first, the stackpower was set to redundant, so we were only getting about 200-ish wattage per switch. We set it to power-sharing and now have about 400+ on some switches. However, as you can see switch...

Hi all, So I upgraded via the install option 23 new out of the box 3650 switches to IOS cat3k_caa-universalk9.SPA.03.07.03.E.152-3.E3.bin. After doing so I'm having POE issues on all 23 boxes. Some ports supply POE and some do not. One interesting th...

Could you please explain the significance of Destination Service Access Point and Source Service Access Point?

Hey guys, just checked the datasheet of the new 10G SMB switches and there's a little difference in "true stacking" between SG500 and SG550X. The keyword "LAG" was added, which should mean that we can run LACP over multiple hardware chassis!? Sadly ...

Dear fellow cisco users, we have 2 cisco SG550XG and we would like to stack them over an LAG of 4 physical ports on each side. According to the product data sheet this is possible and supported: http://www.cisco.com/c/en/us/products/collateral/switch...

Just a heads up for anyone contemplating a port channel  with gig ports gi 1/1/3 & 4 using the C3850-NM-2-10G module. You actually need to configure the te 1/1/3 & 4 ports even though they will only use 1gig or else you may get a  loop event. Intuit...

Hi, I have been trying to block arp broadcast on my sg300 switch. This is at the command line: Extended MAC access list stop broadcast     deny    any host aa:bb:cc:dd:ee:ff vlan 1 0806 0000    permit  any any However, doing a wireshark (non promi...

I have a Catalyst 3560-X PoE that suddenly stopped working.  I plugged in via console and below is the output I received.  It scrolls constantly and I am unable to enter ROMMON mode or stop it from scrolling.  Has anyone experienced this before or mi...

Hi All, Do Nexus 7710 with Sup2E still require Copp?

Can anyone tell me that if the Cisco Catalyst 2960-X (WS-C2960X-24TS-L) running firmware version 15.2(2)E3 - Universalk9 can run Jumbo Frames and Flowcontrol on the default VLAN?