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Cisco Bug: CSCvs15485 - Cat9k PoE models - when configuring speed 100 and duplex full on both sides, interface won't come up

Last Modified

Sep 01, 2020

Products (48)

  • Cisco IOS
  • Cisco 4221 Integrated Services Router
  • Cisco Catalyst 9300-48UXM-A Switch
  • Cisco ASR 1000 Series IOS XE SD-WAN
  • Cisco Catalyst 9300-48P-A Switch
  • Cisco Catalyst 9300-48UN-A Switch
  • Cisco Catalyst 9300-48T-A Switch
  • Cisco Catalyst 9800-40 Wireless Controller
  • Cisco Catalyst 9300-48U-A Switch
  • Cisco Catalyst C9500-16X-E Switch
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Known Affected Releases

16.10.1 16.12.1 16.9.4 17.1.2

Description (partial)

Interface does not come up if Cat9k PoE switch has port hard coded to speed 100/10 and duplex full.

- Cat9200 PoE switch running any software image (day 1 behaviour)
- Port hard coded to speed 100 and duplex full or speed 10 and duplex full
- It does not apply for speed 1000
- Following platforms are affected by the issue:
   1G downlink ports on C9200-48P, C9200-24P,  C9200-48PB, C9200-24PB
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
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