Troubleshooting WCCP

Troubleshooting WCCP

Two types of debug commands are available for debugging or troubleshooting a WCCP connection between a FortiGate unit operating as a WCCP router and its WCCP cache engines.


Real time debugging

The following commands can capture live WCCP messages:

diag debug en

diag debug application wccpd <debug level>


Application debugging

The following commands display information about WCCP operations:

get test wccpd <integer>

diag test application wccpd <integer>

Where <integer> is a value between 1 and 6:

1. Display WCCP stats

2. Display WCCP config

3. Display WCCP cache servers

4. Display WCCP services

5. Display WCCP assignment

6. Display WCCP cache status


Enter the following command to view debugging output:

diag test application wccpd 3

Sample output from a successful WCCP connection:

service-0 in vdom-root: num=1, usable=1 cache server ID:

len=44, addr=, weight=4135, status=0 rcv_id=6547, usable=1, fm=1, nq=0, dev=3(k3), to=

ch_no=0, num_router=1:


Sample output from the same command from an unsuccessful WCCP connection (because of a service group password mismatch):

service-0 in vdom-root: num=0, usable=0 diag debug application wccpd -1

Sample output:

wccp_on_recv()-98: vdom-root recv: num=160, dev=3(3),>

wccp2_receive_pkt()-1124: len=160, type=10, ver=0200, length=152

wccp2_receive_pkt()-1150: found component:t=0, len=20 wccp2_receive_pkt()-1150: found component:t=1, len=24 wccp2_receive_pkt()-1150: found component:t=3, len=44 wccp2_receive_pkt()-1150: found component:t=5, len=20 wccp2_receive_pkt()-1150: found component:t=8, len=24 wccp2_check_security_info()-326: MD5 check failed

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About Mike

Michael Pruett, CISSP has a wide range of cyber-security and network engineering expertise. The plethora of vendors that resell hardware but have zero engineering knowledge resulting in the wrong hardware or configuration being deployed is a major pet peeve of Michael's. This site was started in an effort to spread information while providing the option of quality consulting services at a much lower price than Fortinet Professional Services. Owns PacketLlama.Com (Fortinet Hardware Sales) and Office Of The CISO, LLC (Cybersecurity consulting firm).

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