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Layer2-policer on MX l2circuit resource usage

  • 1.  Layer2-policer on MX l2circuit resource usage

    Posted 04-13-2022 04:35
    Hi there

    We're looking at rolling out L2 policing over our MX l2circuit estate, and I wasn't sure about the resource (CPU/Memory/TCAM etc.) usage of this, particularly as we have thousands of l2circuits across the network. We run MX 240/204s. Below is a config snippet of the l2circuit policer.

    set interfaces ae0 unit 100 encapsulation vlan-ccc
    set interfaces ae0 unit 100 vlan-id 100
    set interfaces ae0 unit 100 input-vlan-map pop
    set interfaces ae0 unit 100 output-vlan-map push
    set interfaces ae0 unit 100 layer2-policer input-policer L2700m
    set interfaces ae0 unit 100 policer-overhead ingress -4

    set firewall policer input-policer L2700m logical-interface-policer
    set firewall policer input-policer L2700m if-exceeding bandwidth-limit 700m
    set firewall policer input-policer L2700m if-exceeding burst-size-limit 72k
    set firewall policer input-policer L2700m then discard

    Is it possible someone could please answer/point me in the right direction as to how I could calculate/estimate how much impact this would have?

    Thanks in advance!

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    TRISTAN BENDALL
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