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  1. #1

    Question Eap120, eap225 & snmp

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    Hi

    I'm monitoring an EAP120 with SNMP and I'm getting the following readings (among others):
    • (001) IO
    • (002) ETH0
    • (003) BR0
    • (004) WIFI0
    • (008) ATH0
    • (009) ATH1
    • (010) ATH2
    EAP225 gives:
    • (001) IO
    • (002) ETH0
    • (003) BR0
    • (004) WIFI0
    • (005) WIFI1
    I can imagine that on EAP225 WIFI0 and WIFI1 are 2.4GHz & 5GHz.
    What exactly are each reading of IO and BR0? What on earth are ATH0, ATH1 and ATH2 on EAP120 and what reading should I expect from them?

    Regards!

  2. #2
    Members R1D2 is on a distinguished road
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    Quote Originally Posted by Djago View Post
    What exactly are each reading of IO and BR0? What on earth are ATH0, ATH1 and ATH2 on EAP120 and what reading should I expect from them?
    athN usually designates the physical wireless interface (phy), while wifiN is a virtual wireless interface (one is needed per SSID) on top of the phy. brN is a bridge interface (e.g. eth0 bridged with wifi0). As for IO it could be anything, probably input/ouptut on all interfaces. I also have no idea why the EAP120 lists three phys.

  3. #3
    Quote Originally Posted by R1D2 View Post
    athN usually designates the physical wireless interface (phy), while wifiN is a virtual wireless interface (one is needed per SSID) on top of the phy.
    But I have 3 SSID and only one wifi!

    Quote Originally Posted by R1D2 View Post
    brN is a bridge interface (e.g. eth0 bridged with wifi0).
    Is there any way of knowing what is bridging?

    Quote Originally Posted by R1D2 View Post
    As for IO it could be anything, probably input/ouptut on all interfaces. I also have no idea why the EAP120 lists three phys.
    I'm thinking what you wrote and looking at the numbers... Is there any possibility that on EAP120 each athN be one SSID?

  4. #4
    Members R1D2 is on a distinguished road
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    Quote Originally Posted by Djago View Post
    But I have 3 SSID and only one wifi!
    Then it's the other way around despite usual naming conventions.

    Is there any way of knowing what is bridging?
    https://wiki.debian.org/BridgeNetworkConnections

    I'm thinking what you wrote and looking at the numbers... Is there any possibility that on EAP120 each athN be one SSID?
    Yes, could be. Every implementation can assign names in any way. ath usually stands for "Atheros" and this is the driver for the WiFi chip (the physical interface). wl, wlan, wifi are common names for the virtual interfaces on top of the chip's physical interface. Probably it has been reversed for whatever reasons.
    Last edited by R1D2; 10-05-2017 at 16:22.


 

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