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Cisco Bug: CSCtf20396 - ASR9k: RJ45 SFP is not working with far-end Autoneg enabled device

Last Modified

Jan 14, 2017

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases


Description (partial)

The link is not coming up when RJ45 SFP is used in A9K-40GE-E or A9K-2T20GE-E linecard.
Auto-negotiation is not supported in RJ45 SFP. If the far-end device is using Auto-negotiation, 
then link in GigE interface may be down. This is due to mis-configuration ie., one side is 
configured for No Auto-neg where as the other side is configured for Auto-neg.
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Bug Details Include

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