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Cisco Bug: CSCvs27889 - NAT address is deleted from route table after FTP passive mode communication

Last Modified

Jul 09, 2020

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

PC1(FTP server)----------C891F-----Router2------PC2(FTP client)

During FTP communication from PC2 (Client) to PC1 (Server) ----- FTP passive mode
once PC2 (Client) download document from PC1 (FTP server) is completed, NAT virtual ip add disappeared from the ip route table / arp table on C891F. Then communication between PC1 --- PC2 failed because there is none NAT route.

FTP passive mode communication
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