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Hi everyone, when i connect my Cisco Catalyst 2950 to Putty via USB-Serial i received in terminal only strange characters. I tried change speed (baud rates), but nothing changed. I also tried reinstall drivers for USB-serial device. Thanks for hel...

rpkulich by Level 1
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  • 0 Helpful votes

Hi, Can you have two mac addresses showing on an interface? Is this normal then the switch authenticates only the first mac and the second one is drop as I see from the mac table!   5162252_SW_1_1#sh authentication interface f0/8 Client list: Interf...

nyi gbe by Level 1
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  • 1 replies
  • 0 Helpful votes

Resolved! IGMP snooping

Hello, we have a remote site with a L2 multicast WAN circuit connection to a Telco. We have been told to disable 'igmp snooping' on our router's L2 uplink interface to this multicast WAN and also to enter 'no switchport multicast'. I am wondering why...

Im faced with an issue whereby if i ping -l 1600 X.X.X.X or with any packet lager than 1472 is not going to or through my switch it gets dropped. C3560E Software (C3560E-UNIVERSALK9-M), Version 12.2(55)SE3 It seems everywhere else on the network i ca...

Hi buddies, I deployed udld between tow divices, one side is ok and the operational state is bidirectional but operational state at the other side is unknown. when I debug at the faulty side I faced with the below repeatedly logs: UDLD send probe mes...

Hello, can any one help me to know more about Catalyst 9000 series switches and its variant like 9300, 9400 and 9500 from the technology and the basic configuration perspective. As need to showcase a document to top management which should highlight ...

I can't get a SFP-10G-SR-S module to work in port te1/1/4 on any switch.  If I put it in port te1/1/3 I can see that in the inventory on the switch.  For some reason port 4 is not working.  Has anyone else seen this happen.  I have it working in othe...

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