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Kiran_145850's avatar
Kiran_145850
Icon for Nimbostratus rankNimbostratus
Feb 28, 2014

irlue to send the logs to remote server using port number will use which protocol by default TCP/UDP

Hi,

 

I am using an irule to send the logs to remote server . Just wanted to know th eport number mentioned in irule will use UDP or TCP .

 

I belive its UDP , but requesting someone to please confirm . Below the irule used :

 

when SERVER_CONNECTED { log x.x.x.x:518 local0.info "client: [IP::client_addr]:[TCP::client_port] -> VIP: [clientside {IP::local_addr}]:[clientside {TCP::local_port}] -> Node: [IP::server_addr]:[TCP::server_port]" }

 

13 Replies

  • Below is the output from F5 using

     

    tcpdump -lnni 0.0 udp and host x.x.x.x and port 518

     

    tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

     

    listening on 0.0, link-type EN10MB (Ethernet), capture size 108 bytes

     

    07:48:13.244408 IP x.x.x.x.56996 > x.x.x.x.518: UDP, length 145

     

    07:48:13.286717 IP x.x.x.x.12251 > x.x.x.x.518: UDP, length 144

     

    07:48:13.512914 IP x.x.x.x.3040 > x.x.x.x..518: UDP, length 144

     

    tcpdump -lnni 0.0 udp and host x.x.x.x and port 514

     

    tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

     

    listening on 0.0, link-type EN10MB (Ethernet), capture size 108 bytes

     

    07:48:37.546228 IP x.x.x.x.53789 > x.x.x.x..514: SYSLOG local0.info, length: 144

     

    07:48:37.548936 IP x.x.x.x.2972 > x.x.x.x.514: SYSLOG local0.info, length: 144

     

    I will do a tcpdump on remote server

     

  • Please find the o/p from remote server . Traffic is reaching from F5 .

     

    tcpdump host x.x.x.x and port 518

     

    tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

     

    listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes

     

    08:03:34.755647 IP f5 device > syslogserver.ntalk: UDP, length 145

     

    08:03:34.879445 IP f5 device.59295 > syslogserver.ntalk: UDP, length 138

     

    08:03:34.955722 IP f5 device.56996 > syslogserver.ntalk: UDP, length 144

     

  • Hi Kevin,

     

    Thanks for you excellent support .

     

    Issue resolved -- it was a miconfiguration at the remote server .