Radius request from ePMP1000 AP has MTU = 1400

Products ePMP
1

Hello!

When ePMP GPS Access Point send request to radius server it set MTU equal 1400. But in web config there is only one setting about MTU and it sets to 1500 for Ethernet MTU option.

What is the real MTU setting and why it set to 1400 at radius Request Access-Request:

Thu Mar 17 10:38:37 2016
        Packet-Type = Access-Request
        User-Name = "test"
        NAS-Identifier = "Cambium:000A"
        NAS-Port = 0
        Called-Station-Id = "00-04-56-CE-A2-02:WME:000A"
        Calling-Station-Id = "00-04-56-C4-5D-E2"
        Framed-MTU = 1400 <---------------------------------------------- ???
        NAS-Port-Type = Wireless-802.11
        Connect-Info = "CONNECT 0Mbps 802.11b"
        EAP-Message = 0x020a00061500
        State = 0x046c102b0066053607036e13a1cb8854
        Message-Authenticator = 0x963e4736047e30b0240c95e6886b006d
        NAS-IP-Address = 172.31.0.4
2

Hello,

This parameter is internally set (not accessible to the operator). It is intentionally set to 1400 bytes to reduce EAP packet size.

Regards