AOS-CX Switch Simulator

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Incorrect IGMP handling with simulator version 10.09.0002

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  • 1.  Incorrect IGMP handling with simulator version 10.09.0002

    Posted Dec 26, 2021 03:51 PM
    I have the following lab environment built in EVE-NG:

    (Lines going to the right are management interfaces so I can access the devices from my own computer)

    I'm doing wireshark capture on ArubaCX5 interface 1/1/6 but I do not see IGMP Join messages going from Linux9 towards ArubaCX4. If I do packet capture on ArubaCX5 on interface 1/1/1 I can see those.

    Shouldn't IGMP join messages go through ArubaCX5 when I don't have any multicast configuration on that switch? I have interface vlan10 on ArubaCX4 and it works otherwise just fine (I can SSH from Linux9 to ArubaCX4 on but no IGMP messages are seen there.

    Is this a problem with simulator version or am I doing something incorrectly?

    With my physical lab gear, I have Linux <--> CX-access1 <--> CX-agg1 and I have same config on the CX-agg1 and it seems to be working fine. I don't have any multicat config on CX-access1, just access vlan 10 towards Linux and vlan trunk towards CX-agg1. After I start iperf and bind it to multicast group on Linux client I can see this on CX-agg1:

    CX-agg1# show ip igmp groups
    IGMP group information for group
    Interface Name   : vlan10
    VRF Name         : default
    Group Address    :
    Last Reporter    :
                                  V1        V2        Sources   Sources
    Vers Mode Uptime    Expires   Timer     Timer     Forwarded Blocked
    ---- ---- --------- --------- --------- --------- --------- --------
    3    EXC  0m 21s    3m 59s​

    (Also this code snippet should have AOS-S/AOS-CX highlights :) )

    I think this is how it should be? Didn't see anything metioned in the simulator release notes that multicast wouldn't work?