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MAC Address issue on Cisco c9300

Can anyone explain why a burned-in MAC address might deviate from the logical numbering scheme? Typically, the MAC addresses for a switch’s ports begin with a base MAC address and increment in sequence, corresponding to the port numbers. In our case,...

Tec1do by • Community Member
  • 552 Views
  • 20 replies
  • 1 Helpful votes

Crash2Bug bot access token rejected — HTTP 401

 My Crash2Bug bot access token returns HTTP 401 when calling: GET https://webexapis.com/v1/people/me The failure occurs from both: 1. Python on ADS host sjc-ads-4792 2. The Webex Developer API tester Error: The request requires a valid access token...

vramiyen by • Cisco Employee
  • 54 Views
  • 0 replies
  • 0 Helpful votes

nfvis reset password catalyst 8200-ucpe-1N8

hello,We loose  some of the admin password from our  catalyst 8200-ucpe-1N8 ( used for teaching in  university courses). I try to reset them :- first try on boot to access bios but "nfvis" ask for CTRL ALT DEL to change bios password. I use a serial ...

pouchougpro by • Community Member
  • 3456 Views
  • 3 replies
  • 0 Helpful votes

OpenDNS DoH returns RCODE 5 (REFUSED) for multiple domains

Hello,We are investigating unexpected DNS resolution behavior observed on November 10, 2026.We tested the OpenDNS DNS-over-HTTPS endpoint at doh.opendns.com/dns-query.We sent A and AAAA queries for the following domains:smmtouch.comsmmtouch.storedev....

Jrogor by • Community Member
  • 130 Views
  • 1 replies
  • 0 Helpful votes

Resolved! C9800-40 ROMMON upgrade 17.7(3r) to 17.12(1r)

Please advise and give me your opinion:I need to perform a ROMMON upgrade from version 17.7(3r) to 17.12(1r) on a C9800-40. The guides say that I must use the command reload and not reload slot x, which means both WLCs will restart, not just the one ...

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