[c-nsp] Port channels and etherchannels

[Gordon Bezzina]

I have a strange problem happening.

I have the following setup

        +------------+
        |            |
      GE1/1        GE1/1
   C5500a           C5500a
  9/21 9/22       9/1   9/2
   |     |         |     |
   |     |         |     |
 FE3/0 FE3/1     FE3/0 FE3/1
   C7500		  C7500

Switch are identical in hardware and cato/s version

c5500a> (enable) sh ver
WS-C5500 Software, Version McpSW: 5.5(20) NmpSW: 5.5(20)
Copyright (c) 1995-2004 by Cisco Systems
NMP S/W compiled on Jun  4 2004, 18:35:26
MCP S/W compiled on Jun 04 2004, 18:31:39

System Bootstrap Version: 3.1.2

Hardware Version: 1.4  Model: WS-C5500  Serial #: 069074601

Mod Port Model      Serial #  Versions
--- ---- ---------- --------- ----------------------------------------
1   2    WS-X5530   012110759 Hw : 3.0
                              Fw : 3.1.2
                              Fw1: 4.2(1)
                              Sw : 5.5(20)
         WS-F5531   012141612 Hw : 1.0
         WS-U5534   009999174 Hw : 1.0

....

set port channel 9/21-22 371

...

Router config is:

interface Port-channel3
 description Clients Interlink - 7513
 no ip address
 full-duplex
!
interface Port-channel3.1
 description Native VLAN
 encapsulation dot1Q 102 native
 ip vrf forwarding VF
 ip address 172.21.150.2 255.255.255.0
!

...

interface FastEthernet3/0/0
 description EtherChannel to Switch 5500b (A)
 no ip address
 full-duplex
 channel-group 3
!
interface FastEthernet3/1/0
 description EtherChannel to Switch 5500b (B)
 no ip address
 full-duplex
 channel-group 3
!

c7513#sh diagbus 3
Slot 3:
        Physical slot 3, ~physical slot 0xC, logical slot 3, CBus 0
        Microcode Status 0x4
        Master Enable, LED, WCS Loaded
        Board is analyzed
        Pending I/O Status: None
        EEPROM format version 1
        VIP4-80 RM7000 controller, HW rev 2.02, board revision B0
        Serial number: 18620303  Part number: 73-3143-02
        Test history: 0x00        RMA number: 00-00-00
        Flags: cisco 7000 board; 7500 compatible

        EEPROM contents (hex):
          0x20: 01 22 02 02 01 1C 1F 8F 49 0C 47 02 00 00 00 00
          0x30: 58 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

        Slot database information:
        Flags: 0x4      Insertion time: 0x2321B4B80 (02:01:54 ago)

        Controller Memory Size: 256 MBytes CPU SDRAM, 64 MBytes Packet SDRAM

        PA Bay 0 Information:
                Fast-Ethernet PA, 1 ports, 100BaseTX-ISL
                EEPROM format version 1
                HW rev 1.00, Board revision A0
                Serial number: 07806915  Part number: 73-1688-04

        PA Bay 1 Information:
                Fast-Ethernet PA, 1 ports, 100BaseTX-ISL
                EEPROM format version 1
                HW rev 1.00, Board revision A0
                Serial number: 04621964  Part number: 73-1688-03

        --Boot log begin--

Cisco Internetwork Operating System Software
IOS (tm) VIP Software (SVIP-DW-M), Version 12.3(16), RELEASE SOFTWARE (fc4)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2005 by cisco Systems, Inc.
Compiled Tue 23-Aug-05 22:18 by ssearch
Image text-base: 0x60010AE4, data-base: 0x60560000


        --Boot log end--


Funnily enough it does not work! Not even when I connect both fast Ethernets
with cross-over cables does it work.

Either I am doing something extremely stupid or else there is a hardware
failure somewhere.

Any hints please !?

Thanks in advance

Rgds
Gordon