WCCP Diagnose commands

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Diagnose commands

The following get and diagnose commands are available for troubleshooting WAN optimization, web cache, explicit proxy and WCCP.

 

get test {wad | wccpd} <test_level>

Display usage information about WAN optimization, explicit proxy, web cache, and WCCP applications. Use <test_level> to display different information.

get test wad <test_level>

get test wccpd <test_level>

 

 

Variable                   Description

wad             Display information about WAN optimization, web caching, the explicit web proxy, and the explicit FTP proxy.

wccpd          Display information about the WCCP application.

 

Examples

Enter the following command to display WAN optimization tunnel protocol statistics. The http tunnel and tcp tunnel parts of the command output below shows that WAN optimization has been processing HTTP and TCP packets.

get test wad 1

WAD manager process status: pid=113 n_workers=1 ndebug_workers=0

Enter the following command to display all test options:

get test wad

 

WAD process 82 test usage:

1: display process status

2: display total memory usage.

99: restart all WAD processes

1000: List all WAD processes.

1001: dispaly debug level name and values

1002: dispaly status of WANOpt storages

1068: Enable debug for all WAD workers.

1069: Disable debug for all WAD workers.

2yxx: Set No. xx process of type y as diagnosis process.

3: display all fix-sized advanced memory stats

4: display all fix-sized advanced memory stats in details

500000..599999: cmem bucket stats (599999 for usage)

800..899: mem_diag commands (800 for help & usage)

800000..899999: mem_diag commands with 1 arg (800 for help & usage)

80000000..89999999: mem_diag commands with 2 args (800 for help & usage)

60: show debug stats.

61: discard all wad debug info that is currently pending

62xxx: set xxxM maximum ouput buffer size for WAD debug. 0, set back to default.

68: Enable process debug

69: Disable process debug

98: gracefully stopping WAD process

9xx: Set xx workers(0: default based on user configuration.)

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Troubleshooting WCCP

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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=172.16.78.8, weight=4135, status=0 rcv_id=6547, usable=1, fm=1, nq=0, dev=3(k3), to=192.168.11.55

ch_no=0, num_router=1:

192.168.11.55

 

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),

172.16.78.8->192.168.11.55

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

WCCP Messages

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WCCP Messages

When the WCCP service is active on a web cache server it periodically sends a WCCP HERE I AM broadcast or unicast message to the FortiGate unit operating as a WCCP router. This message contains the following information:

  • Web cache identity (the IP address of the web cache server).
  • Service info (the service group to join).

 

If the information received in the previous message matches what is expected, the FortiGate unit replies with a WCCP I SEE YOU message that contains the following details:

  • Router identity (the FortiGate unit’s IP address.
  • Sent to IP (the web cache IP addresses to which the packets are addressed)

When both ends receive these two messages the connection is established, the service group is formed and the designated web cache is elected.