Lots of SPIs for one tunnel - High RAM ?

  • Hi,

    I'm experiencing a lot of SPIs created (267) for a tunnel running from A to C, while running a tunnel from B to C with exactly the same configuration just results in 4 SPIs created.

    Site A
    ipsec status con3 | grep INSTALLED | wc -l

    Site B
    ipsec status con2 | grep INSTALLED | wc -l

    Any idea what might cause this behaviour ? I think this is what slowly fills up my RAM on Site A untill the box doesn't respond anymore...

    ThanK you in advance.

  • LAYER 8 Netgate

    Highly doubtful those are filling your RAM but it could be causing issues.

    When a tunnel is rekeyed the old one is kept around until its lifetime expires.

    I would look at the IPsec logs and see who is initiating the tunnels when one already exists. When that is determined, attempt to figure out why they are doing that.

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