237udp-port: Specifies the UDP port number of the flow logging server, in the range of 0 to 65535.slot slot-number: Specifies a card by its slot number.Usage guidelinesTo output flow logs in UDP packets, you must specify a flow logging server. Otherwise the flow logscannot be exported.To avoid collision with general UDP port numbers, use UDP port numbers in the range of 1025 to 65535.The specified VPN instance must have been created. Otherwise packets delivery fails.On the SR6602 router:You can specify at most two log servers of the same type or different types for a device. There are threetypes of log servers, the VPN flow logging server, the IPv4 flow logging server, and the IPv6 flow loggingserver. If you have already specified two servers, you need to delete one to specify a new one. If youspecify a new server that has the same IP address as but has other information different from the currentserver, the new configuration overwrites the previous one.On the SR6602-X/SR6604/SR6608/SR6616/SR6604-X/SR6608-X/SR6616-X router:You must specify flow logging servers for interface cards separately. You can specify at most two logservers of the same type or different types. There are three types of log servers, the VPN flow loggingserver, the IPv4 flow logging server, and the IPv6 flow logging server. If you have already specified twoservers for an interface card, you must delete one to specify a new one. If you specify a new server thathas the same IP address as but has different other information from the current server, the newconfiguration overwrites the previous one.The following matrix shows the option and router compatibility:Option SR6602 SR6602-X SR6604/SR6608/SR6616 SR6604-X/SR6608-X/SR6616-Xslot slot-number No Yes Yes YesExamplesOn the SR6602 router:# Export flow logs to port 2000 on the IPv6 log server 1::1. system-view[Sysname] userlog flow export host ipv6 1::1 2000On the SR6602-X/SR6604/SR6608/SR6616/SR6604-X/SR6608-X/SR6616-X router:# Export flow logs generated by the card in slot 2 to port 2000 on the IPv6 log server 1::1, and port 2001on the IPv6 log server 1::2. system-view[Sysname] userlog flow export slot 2 host ipv6 1::1 2000[Sysname] userlog flow export slot 2 host ipv6 1::2 2001Related commandsuserlog flow export hostuserlog flow export source-ipUse userlog flow export source-ip to configure the source IP address of flow logging packets.
