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Cisco Bug: CSCun48901 - 2x100GE egress bundle not loadbalancing correctly on asr9k/typhoon

Last Modified

Oct 24, 2018

Products (7)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco IOS XR Software
  • Cisco ASR 9922 Router
  • Cisco ASR 9010 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases

4.3.4.FWDG 5.3.2.BASE

Description (partial)

Symptom:
When four 100GE interfaces from A9K-2x100GE-TR  linecards are in a bundle, traffic output (egress)  from this bundle is limited to ~56Gbps per bundle member.  In reverse direction (bundle ingress, non-bunlde egress), the traffic rate does not have this limit.

Conditions:
Four 100GE interfaces from A9K-2x100GE linecard in a bundle interface, traffic ingress to non-bunlde interfaces and egress out of the 400Gbps bundle.

Related Community Discussions

ASR9K: A9K-2X100GE LC で Bundle member 数が偶数の場合に転送レートが減少する
2015年4月23日(初版) TAC SR Collection 主な問題 ASR9000 シリーズルータ において、A9K-2X100GE-SE/TR の LC で Bundle を構成している場合で、 Bundle member interface の数が偶数の場合に、この Bundle interface から通過する traffic rate が Bundle member 毎に 56Gbps 以下に制限されます。 原因 この問題は、<key>CSCun48901</key> において報告されています。 | <key>CSCun48901</key> 2x100GE egress bundle not loadbalancing correctly on asr9k/typhoon 解決策 Bundle member interface | の数を奇数で使用すればこの問題は発生しません。 問題の解決には、<key>CSCun48901</key> が修正されたバージョンをご使用ください。 備考 本不具合は、Bug Search Tool でも確認できます。
Latest activity: Apr 24, 2015
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