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IPoE DORA process

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  • 1.  IPoE DORA process

    Posted 07-07-2019 21:55
    What will happen on DORA when we have multiple bng lets say 4 bng with 3 interfaces each? How will Radius behaves in this case? Anyone expert, please put your views.


  • 2.  RE: IPoE DORA process

     
    Posted 07-07-2019 22:38

    Hi Kijush,

     

    What i understand is you've four BNG and 3 interfaces in each BNG. All the three interfaces has same VLAN.

    You've radius authentication under the dhcp-local-server hirarchy.

     

    Please let me know if understanding is correct?

     

     



  • 3.  RE: IPoE DORA process

    Posted 07-07-2019 23:09
    Yes you are correct. So what actually happens?


  • 4.  RE: IPoE DORA process

     
    Posted 07-09-2019 01:37

    Hi Kijush,

     

    We'll test in lab and confirm the behavior. Discover packet causes 4x3 radius request or 4x1 radius request.

     

    Regards,
    Rahul



  • 5.  RE: IPoE DORA process

    Posted 07-11-2019 00:53
    Hi Rahul, Did u get to test it in your lab? I doubt all the interface i.e 4x3 are sending request to radius.


  • 6.  RE: IPoE DORA process
    Best Answer

     
    Posted 07-11-2019 02:21

    Hi Kijush,

     

    I tested using one BNG and 4 interfaces. I see BNG is receiving 4 Discover but BNG is sending only one offer and only authentication request sent to radius.


    labroot@jtac-mx480-r2046> show dhcp server statistics
    Packets dropped:
    Total 0

    Offer Delay:
    DELAYED 0
    INPROGRESS 0
    TOTAL 0

    Messages received:
    BOOTREQUEST 8
    DHCPDECLINE 0
    DHCPDISCOVER 4
    DHCPINFORM 0
    DHCPRELEASE 0
    DHCPREQUEST 4
    DHCPLEASEQUERY 0
    DHCPBULKLEASEQUERY 0

    Messages sent:
    BOOTREPLY 2
    DHCPOFFER 1
    DHCPACK 1
    DHCPNAK 0
    DHCPFORCERENEW 0
    DHCPLEASEUNASSIGNED 0
    DHCPLEASEUNKNOWN 0
    DHCPLEASEACTIVE 0
    DHCPLEASEQUERYDONE 0

     

     

    labroot@jtac-mx480-r2046> show network-access aaa statistics authentication
    Authentication module statistics
    Requests received: 1
    Accepts: 1
    Rejects: 0
    Challenges: 0
    Timed out requests: 0



  • 7.  RE: IPoE DORA process

    Posted 07-13-2019 22:56

    Thank you rahul for the clarification. I got similar kind of show output where i can see lesser number of request compared to message received.

    # run show dhcp server statistics
    Packets dropped:
    Total 1958125
    Authentication 1945519
    TTL expired 3
    No binding found 12579
    dhcp-service total 24

    Offer Delay:
    DELAYED 0
    INPROGRESS 0
    TOTAL 0

    Messages received:
    BOOTREQUEST 3217568
    DHCPDECLINE 0
    DHCPDISCOVER 3092513
    DHCPINFORM 0
    DHCPRELEASE 2350
    DHCPREQUEST 122705
    DHCPLEASEQUERY 0
    DHCPBULKLEASEQUERY 0

    Messages sent:
    BOOTREPLY 176567
    DHCPOFFER 87943
    DHCPACK 55202
    DHCPNAK 33422
    DHCPFORCERENEW 0
    DHCPLEASEUNASSIGNED 0
    DHCPLEASEUNKNOWN 0
    DHCPLEASEACTIVE 0
    DHCPLEASEQUERYDONE 0

    Packets forwarded:
    Total 802
    BOOTREQUEST 0
    BOOTREPLY 802