CGMP problem

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May 22nd, 2008
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Hi,


My 3500XL access switchs dont see the multicast router. CGMP is enable on my distribution 6500. I've got a aggregation layer of stacked 3750G-12S between the distribution and the access layer. Could the 3750 be dropping the 0100.0cdd.dddd (CGMP join) packet ?

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dominic.caron Thu, 05/22/2008 - 15:24
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Looks like the 3750 is dropping the packets


When I issue

sh platform forward g1/0/2 00d0.03ff.2000 0100.0cdd.dddd


There is no output interface for my packet. G1/0/2 is the router...


Global Port Number: 497, lpn: 3 Asic Number: 2

Source Vlan Id: Real 1, Mapped 1. L2EncapType 0, L3EncapType 3

Hashes: L2Src 0x0C L2Dst 0x06 L3Src 0x0C L3Dst 0x06

Lookup Key-Used Index-Hit A-Data

Classify 68_7C700100_0CDDDDDD-00_000000D0_03FF2000 01B84 0000004E

InputACL 20_7C700100_0CDDDDDD-00_000000D0_03FF2000 01FF8 01000000

L2LrnMsk FF_03FFFFFF_FFFFFFFF-00_000003FF_00000000

L2Learn 83_000100D0_03FF2000-C3_000005F1_00000000 01820 00000000

L2FwdMsk FF_03FFFFFF_FFFFFFFF

L2Fwd 83_00010100_0CDDDDDD 013B0 0000000B

Station Descriptor: 00230000, DestIndex: 0023, RewriteIndex: 0000

==========================================

Egress: Asic 0, switch 1

CPU queues: 10 14.

Source Vlan Id: Real 1, Mapped 1. L2EncapType 0, L3EncapType 3

portMap 0x0, non-SPAN portMap 0x0


Output Packets:

==========================================

Egress: Asic 1, switch 1

CPU queues: 14.

Source Vlan Id: Real 1, Mapped 1. L2EncapType 0, L3EncapType 3

portMap 0x0, non-SPAN portMap 0x0


Output Packets:

==========================================

Egress: Asic 2, switch 1

CPU queues: 14.

Source Vlan Id: Real 1, Mapped 1. L2EncapType 0, L3EncapType 3

portMap 0x0, non-SPAN portMap 0x0


Output Packets:

==========================================

Egress: Asic 0, switch 2

CPU queues: 14.

Source Vlan Id: Real 1, Mapped 1. L2EncapType 0, L3EncapType 3

portMap 0x0, non-SPAN portMap 0x0


Output Packets:

==========================================

Egress: Asic 1, switch 2

CPU queues: 14.

Source Vlan Id: Real 1, Mapped 1. L2EncapType 0, L3EncapType 3

portMap 0x0, non-SPAN portMap 0x0


Output Packets:

==========================================

Egress: Asic 2, switch 2

CPU queues: 14.

Source Vlan Id: Real 1, Mapped 1. L2EncapType 0, L3EncapType 3

portMap 0x0, non-SPAN portMap 0x0


Output Packets:

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