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WCCP redirection stops only after adding third client

Hello,

 

I have come across an odd problem where adding a third client to wccp group stops all traffic redirection.  I can repeat the problem, and have been told by the vendor of the client software that the software is working as designed with no faults.  So I am asking around to see if anyone has any debug commands that might help or perhaps has come across this before.

 

3560G switch running version 15.0(2)SE4

 

In the working environment with only two clients, the wccp details look like this:

 

WCCP Client information:
        WCCP Client ID:          10.10.10.66
        Protocol Version:        2.0
        State:                   Usable
        Redirection:             L2
        Packet Return:           GRE
        Assignment:              MASK
        Connect Time:            5d21h
        Redirected Packets:
          Process:               0
          CEF:                   5997
        GRE Bypassed Packets:
          Process:               0
          CEF:                   0
        Mask Allotment:          32 of 64 (50.00%)

        Mask  SrcAddr    DstAddr    SrcPort DstPort
        ----  -------    -------    ------- -------
        0000: 0x00000015 0x00000015 0x0000  0x0000

        Value SrcAddr    DstAddr    SrcPort DstPort
        ----- -------    -------    ------- -------
        0000: 0x00000000 0x00000000 0x0000  0x0000
        0001: 0x00000000 0x00000001 0x0000  0x0000
        0002: 0x00000000 0x00000004 0x0000  0x0000
        0003: 0x00000000 0x00000005 0x0000  0x0000
        0004: 0x00000000 0x00000010 0x0000  0x0000
        0005: 0x00000000 0x00000011 0x0000  0x0000
        0006: 0x00000000 0x00000014 0x0000  0x0000
        0007: 0x00000000 0x00000015 0x0000  0x0000
        0008: 0x00000001 0x00000000 0x0000  0x0000
        0009: 0x00000001 0x00000001 0x0000  0x0000
        0010: 0x00000001 0x00000004 0x0000  0x0000
        0011: 0x00000001 0x00000005 0x0000  0x0000
        0012: 0x00000001 0x00000010 0x0000  0x0000
        0013: 0x00000001 0x00000011 0x0000  0x0000
        0014: 0x00000001 0x00000014 0x0000  0x0000
        0015: 0x00000001 0x00000015 0x0000  0x0000
        0016: 0x00000004 0x00000000 0x0000  0x0000
        0017: 0x00000004 0x00000001 0x0000  0x0000
        0018: 0x00000004 0x00000004 0x0000  0x0000
        0019: 0x00000004 0x00000005 0x0000  0x0000
        0020: 0x00000004 0x00000010 0x0000  0x0000
        0021: 0x00000004 0x00000011 0x0000  0x0000
        0022: 0x00000004 0x00000014 0x0000  0x0000
        0023: 0x00000004 0x00000015 0x0000  0x0000
        0024: 0x00000005 0x00000000 0x0000  0x0000
        0025: 0x00000005 0x00000001 0x0000  0x0000
        0026: 0x00000005 0x00000004 0x0000  0x0000
        0027: 0x00000005 0x00000005 0x0000  0x0000
        0028: 0x00000005 0x00000010 0x0000  0x0000
        0029: 0x00000005 0x00000011 0x0000  0x0000
        0030: 0x00000005 0x00000014 0x0000  0x0000
        0031: 0x00000005 0x00000015 0x0000  0x0000


        WCCP Client ID:          10.10.10.67
        Protocol Version:        2.0
        State:                   Usable
        Redirection:             L2
        Packet Return:           GRE
        Assignment:              MASK
        Connect Time:            3d20h
        Redirected Packets:
          Process:               0
          CEF:                   238
        GRE Bypassed Packets:
          Process:               0
          CEF:                   0
        Mask Allotment:          32 of 64 (50.00%)

        Mask  SrcAddr    DstAddr    SrcPort DstPort
        ----  -------    -------    ------- -------
        0000: 0x00000015 0x00000015 0x0000  0x0000

        Value SrcAddr    DstAddr    SrcPort DstPort
        ----- -------    -------    ------- -------
        0032: 0x00000010 0x00000000 0x0000  0x0000
        0033: 0x00000010 0x00000001 0x0000  0x0000
        0034: 0x00000010 0x00000004 0x0000  0x0000
        0035: 0x00000010 0x00000005 0x0000  0x0000
        0036: 0x00000010 0x00000010 0x0000  0x0000
        0037: 0x00000010 0x00000011 0x0000  0x0000
        0038: 0x00000010 0x00000014 0x0000  0x0000
        0039: 0x00000010 0x00000015 0x0000  0x0000
        0040: 0x00000011 0x00000000 0x0000  0x0000
        0041: 0x00000011 0x00000001 0x0000  0x0000
        0042: 0x00000011 0x00000004 0x0000  0x0000
        0043: 0x00000011 0x00000005 0x0000  0x0000
        0044: 0x00000011 0x00000010 0x0000  0x0000
        0045: 0x00000011 0x00000011 0x0000  0x0000
        0046: 0x00000011 0x00000014 0x0000  0x0000
        0047: 0x00000011 0x00000015 0x0000  0x0000
        0048: 0x00000014 0x00000000 0x0000  0x0000
        0049: 0x00000014 0x00000001 0x0000  0x0000
        0050: 0x00000014 0x00000004 0x0000  0x0000
        0051: 0x00000014 0x00000005 0x0000  0x0000
        0052: 0x00000014 0x00000010 0x0000  0x0000
        0053: 0x00000014 0x00000011 0x0000  0x0000
        0054: 0x00000014 0x00000014 0x0000  0x0000
        0055: 0x00000014 0x00000015 0x0000  0x0000
        0056: 0x00000015 0x00000000 0x0000  0x0000
        0057: 0x00000015 0x00000001 0x0000  0x0000
        0058: 0x00000015 0x00000004 0x0000  0x0000
        0059: 0x00000015 0x00000005 0x0000  0x0000
        0060: 0x00000015 0x00000010 0x0000  0x0000
        0061: 0x00000015 0x00000011 0x0000  0x0000
        0062: 0x00000015 0x00000014 0x0000  0x0000
        0063: 0x00000015 0x00000015 0x0000  0x0000

 

With this setup everything is working as expected.  As soon as I add the third wccp client to the switch, all wccp traffic redirection stops.  All of the wccp debugs I have run are showing the correct information, and the switch is sending the correct "I see you", " Here I am" packets.

 

I am at a loss as to what else I can debug to find out why it stops working if I add the third client.

 

Dan.

  • LAN Switching and Routing
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