Application Delivery (ADX)

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Occasional Contributor
Posts: 6
Registered: ‎02-13-2012

Error: cannot configure content-check-carray, port is bound to UDP port!

I am trying to work out why a port is known and being checked as UDP by the ADX.

I tried to add come content checks, but an error is displayed:

     cannot configure content-check-carray, port is bound to UDP port!

The VIP is showing port 104 as "FAL"

On the real-server I see UDP requests every 4 seconds?

     12:38:57.563051 IP 172.25.68.88.1798 > 172.25.68.201.104: UDP, length 256

     12:39:01.563278 IP 172.25.68.88.1797 > 172.25.68.201.104: UDP, length 256

     12:39:05.563634 IP 172.25.68.88.1804 > 172.25.68.201.104: UDP, length 256

I need this port to be tcp-only as there is no LISTENER on the real server for UDP.

How can I determine why the ADX thinks its a UDP port?

Any help appreciated...Tks

Config:

server virtual viptest-CLI 172.25.68.225

port 104 sticky

port 104 tcp-only

port 104 lb-pri-servers backup-stay-active

bind 104 vipt1 104

server real vipt1 172.25.68.201

port default disable

source-nat

port http

port http keepalive

port http url "GET /index.html"

port 104

port 104 tcp-only

port 104 keepalive

hc-track-group 104 80

Contributor
Posts: 47
Registered: ‎07-14-2010

Re: Error: cannot configure content-check-carray, port is bound to UDP port!

when port is unknown(not pre-defined), udp health check is performed by default. if you want tcp h/c, configure following.

server port 104                                                  

tcp

udp keepalive disable

Cli syntax will tell you what is known and unknown port.  Also, slb guide(manual) will tell you.

i.e. server real and type port Tab key. you get following output. these are known application port.

LB11(config-rs-1_tokyo)# port

  ftp

  telnet

  smtp

  dns

  tftp

  http

  pop2

  pop3

  nntp

  ntp

  imap4

  snmp

  ldap

  ssl

  ssh

  rtsp

  ldaps

  imaps

  pop3s

  mms

  radius

  radius-old

  3389

  sip                                                            

  sips

  pnm

  default

  DECIMAL               Other well known application port number

  disable-all   Disable all the ports associated with this real server

  unbind-all    Unbind all the ports associated with this real server

LB11(config-rs-1_tokyo)#

Thanks.

//Kono

Contributor
Posts: 47
Registered: ‎07-14-2010

Re: Error: cannot configure content-check-carray, port is bound to UDP port!

I have also enclosed the guide to configure binary health checks for your reference.

Thanks.

//Kono

Occasional Contributor
Posts: 6
Registered: ‎02-13-2012

Re: Error: cannot configure content-check-carray, port is bound to UDP port!

Thank you

I missed that bit

As port 104 (DICOM in my case) is not a known port it looking to health check via UDP.

So focused on trying to see where else in my config I had defined it as UDP....Smiley Happy

Tks again. Checks are working great now and the track group is behaving as I expect.

Just some fine tuning on primary failbacks and I can put this to bed.

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