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Cisco Bug: CSCun04750 - N3K shows trace originator's IP in the traceroute instead of its own IP.

Last Modified

Feb 15, 2018

Products (6)

  • Cisco Nexus 3000 Series Switches
  • Cisco Nexus 3064 Switch
  • Cisco Nexus 3016 Switch
  • Cisco Nexus 3064-T Switch
  • Cisco Nexus 3048 Switch
  • Cisco Nexus 3132Q Switch

Known Affected Releases


Description (partial)

When the Nexus3K is in the path of the traceroute, instead of responding with it's interface IP address with the ICMP TTL expired message, it responds with the traceroute originator's IP.
This causes the traceroute output to be incorrect.

Nexus 3K is in the path of the traceroute.

Related Community Discussions

Nexus 3000 シリーズ経由の traceroute で正しい IP address が表示されない
  TAC SR Collection 主な問題 Nexus 3000 シリーズを経由する宛先に traceroute を実施すると、Nexus がtraceroute の送信元 IP address を返す。 原因 以下のソフトウェア不具合の影響で、Nexus が traceroute の送信元 IP address を自身の IP address として返してしまっています。 | <key>CSCun04750</key>    N3K shows trace originator's IP in the traceroute instead of its own IP. 解決策 Workaround | としては、以下のコマンドを実行することです。指定したインターフェースの IP address が、traceroute の応答など icmp error パケットを返す際の送信元 ip address となります。 Switch(config)# ip source ethernet 1/1 icmp-errors このコマンド例ですと ethernet 1/1 の ip address が 、traceroute ...
Latest activity: May 13, 2014
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