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  1. #1
    Techguy30's Avatar
    Techguy30 is offline Junior Member
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    Jan 2011
    Posts
    115

    Wake on Lan through Layer3 3com 7750switch

    Ok guys here is my problem I am looking at using wake on lan but am having trouble getting it to cross over vlans due to having a layer 3 switch inbetween. I can use wake on lan when my computer is in the same vlan but I need it to reach all of my vlans. The problem is on my managed Layer 3 switch I cannot figure out how to allow that port to pass through (maybe apply acl?). Any suggestions? Not sure if anyone here is up on 3com switchs or networking but I figured I would give it a shot. This is nothing urgent, I guess I will get more cardio walking from building to building turning on the computers until I resolve this issue lol

  2. #2
    Scabtree's Avatar
    Scabtree is offline Associate Member
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    Feb 2010
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    Canada
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    465
    WOL is typically on udp port 402, so you would need to add to the ACL on the 7750 switch. For example:

    udp-helper enable
    udp-helper port 402
    int vlan 120
    udp-helper enable
    udp-helper port 402
    int vlan 140
    udp-helper enable
    udp-helper port 402

    and then:
    ip ip forward-broadcast permit 10.0.0.1 24

    to allow forward broadcasting. This should do it... also make sure to update your firmware before attempting this. Let me know if you need any help.

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