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Bring performance and reliability to your network with the Aruba Core, Aggregation, and Access layer switches. Discuss the latest features and functionality of the ArubaOS-Switch and ArubaOS-CX devices, and find ways to improve security across your network to bring together a mobile first solution.
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MTU size on Cisco for Aruba GRE tunnel ?

  • 1.  MTU size on Cisco for Aruba GRE tunnel ?

    Posted Jan 17, 2020 01:57 PM

    We have some switchports on Aruba 2930 that are configured for a GRE tunnel back to our controller.
    I can only place the command 'Jumbo" on the VLAN interface of the 2930.

    The uplink router is Cisco router. I need to change the MTU size on the WAN interface ?

    Would the proper size for the tunnel be "ip mtu 1514" ?
    Or another size ?



  • 2.  RE: MTU size on Cisco for Aruba GRE tunnel ?

    Posted Jan 17, 2020 03:28 PM

    use MTU 1600