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Helper Bootp on EX9204 - Not Supported -

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  • 1.  Helper Bootp on EX9204 - Not Supported -

    Posted 05-18-2017 18:16

    Hi, 

     

    We need to activate the helper bootp on EX9204 and is not working.   Also we see a warning that indicates that this is not supported on this switches.  I want to know if there is any way that this could work.  

     

    }
    ##
    ## Warning: configuration block ignored: unsupported platform (ex9204)
    ##
    bootp {
    relay-agent-option;
    server x.x.x.;
    interface {
    irb.4021;
    ge-1/1/6.0;
    ge-1/1/7.0;
    ge-1/2/4.0;
    ge-1/2/5.0;
    }

     

     

    We have the same conf. on EX4200 and we have no problems.  Help please!. Thank you!

     

     

    Regards. 

     

    EC



  • 2.  RE: Helper Bootp on EX9204 - Not Supported -

    Posted 05-18-2017 18:33

    Hi,

     

    EX9204 using Junos ELS. The config is different for relay option.



  • 3.  RE: Helper Bootp on EX9204 - Not Supported -

    Posted 05-19-2017 12:05

     

    Hi, 

     

    This is the config, the bootp still not working, any suggestions... please...


    @jun.ex9204> show configuration forwarding-options
    helpers {
    tftp {
    server 10.7.2.10;
    interface {
    irb.4021 {
    broadcast;
    }
    }
    }
    ##
    ## Warning: configuration block ignored: unsupported platform (ex9204)
    ##
    bootp {
    relay-agent-option;
    server 10.7.2.10;
    interface {
    irb.4021 {
    broadcast;
    }
    }
    }
    }
    dhcp-relay {
    overrides {
    trust-option-82;
    bootp-support;
    }
    server-group {
    DHCPSrv {
    10.7.2.10;
    }
    }
    active-server-group DHCPSrv;
    group DHCPSrv {
    interface irb.4021;
    }
    }

    {master}

     



  • 4.  RE: Helper Bootp on EX9204 - Not Supported -

    Posted 05-19-2017 12:21

    Hello, ecallen!

     

    I'd like to verify DHCP relay is functioning at all. Are you seeing incrementing counters on the dhcp relay statistics? Are leases being offered and accepted by the clients? Essentially, is the only issue BOOTP?

     

    Below is an example output from my lab. 

     

    user@demo1> show dhcp relay statistics
    Packets dropped:
        Total                      15833
        Invalid server address     3064
        Interface not configured   9301
        Send error                 1
        No binding found           3467
    
    Messages received:
        BOOTREQUEST                7389
        DHCPDECLINE                0
        DHCPDISCOVER               1810
        DHCPINFORM                 5468
        DHCPRELEASE                0
        DHCPREQUEST                111
        DHCPLEASEACTIVE            0
        DHCPLEASEUNASSIGNED        0
        DHCPLEASEUNKNOWN           0
        DHCPLEASEQUERYDONE         0
    
    Messages sent:
        BOOTREPLY                  5877
        DHCPOFFER                  3577
        DHCPACK                    2291
        DHCPNAK                    9
        DHCPFORCERENEW             0
        DHCPLEASEQUERY             0
        DHCPBULKLEASEQUERY         0
    
    Packets forwarded:
        Total                      1755
        BOOTREQUEST                0
        BOOTREPLY                  1755
    
    {master:0}
    user@demo1>
    


  • 5.  RE: Helper Bootp on EX9204 - Not Supported -

    Posted 05-19-2017 12:26

    Hi, 

     

    Yes this are the results: 

     

    -(refreshed at 2017-05-19 12:19:30 CST)---
    Packets dropped:
    Total 0

    Messages received:
    BOOTREQUEST 3
    DHCPDECLINE 0
    DHCPDISCOVER 0
    DHCPINFORM 0
    DHCPRELEASE 0
    DHCPREQUEST 0

    Messages sent:
    BOOTREPLY 0
    DHCPOFFER 0
    DHCPACK 0
    DHCPNAK 0

     

    We receive the requests but sending any.

     

     



  • 6.  RE: Helper Bootp on EX9204 - Not Supported -

    Posted 05-19-2017 12:36

    Do you have a route for 10.7.2.10? Are you able to ping it? Do you have any filters, such as a Loopback or interface filters applied? You may want to set a trace to see how JDHCP is handling the request. 

     

    set system processes dhcp-service traceoptions file JDHCP
    set system processes dhcp-service traceoptions file size 5m
    set system processes dhcp-service traceoptions file files 2
    set system processes dhcp-service traceoptions flag all
    

    Feel free to attach the JDHCP trace when you're done capturing.



  • 7.  RE: Helper Bootp on EX9204 - Not Supported -

    Posted 05-19-2017 13:23

    Hi, 

     

    We notice some filters on a Vlans IRB, I remove it and now we do see "replays  on the dhcp relay: 

     

    ---(refreshed at 2017-05-19 14:20:18 CST)---
    Packets dropped:
    Total 0

    Messages received:
    BOOTREQUEST 2
    DHCPDECLINE 0
    DHCPDISCOVER 0
    DHCPINFORM 0
    DHCPRELEASE 0
    DHCPREQUEST 0

    Messages sent:
    BOOTREPLY 2
    DHCPOFFER 0
    DHCPACK 0
    DHCPNAK 0
    DHCPFORCERENEW 0
    ---(*more 100%)---[abort]

     

    However on the IRB.4021, we also receive the messages but not replay. I guess is something missing on the IRB.

     

    ackets dropped:
    Total 0

    Messages received:
    BOOTREQUEST 2
    DHCPDECLINE 0
    DHCPDISCOVER 0
    DHCPINFORM 0
    DHCPRELEASE 0
    DHCPREQUEST 0

    Messages sent:
    BOOTREPLY 0
    DHCPOFFER 0
    DHCPACK 0
    DHCPNAK 0
    DHCPFORCERENEW 0
    ---(*more 100%)---[abort]

    {master}



  • 8.  RE: Helper Bootp on EX9204 - Not Supported -

    Posted 05-19-2017 14:40

    This is our config:

     

    @> show configuration forwarding-options
    helpers {
    tftp {
    server 10.7.2.10;
    interface {
    irb.4021 {
    broadcast;
    }
    }
    }
    }
    dhcp-relay {
    forward-snooped-clients all-interfaces;
    overrides {
    layer2-unicast-replies;
    bootp-support;
    }
    relay-option-82;
    server-group {
    DHCPSrv {
    10.7.2.10;
    }
    }
    active-server-group DHCPSrv;
    group DHCPSrv {
    interface irb.4021 {
    overrides {
    bootp-support;
    }
    }
    }
    }

     

    @> show configuration vlans XXXXXX 
    vlan-id 4021;
    l3-interface irb.4021;
    forwarding-options {
    dhcp-security {
    group DHCPSrv {
    overrides {
    trusted;
    }
    }
    }
    }



  • 9.  RE: Helper Bootp on EX9204 - Not Supported -
    Best Answer

    Posted 05-19-2017 19:41

    Hi, 

     

    We restart the dhcp-service and everithing work ok.  Smiley Very Happy

     

    Regards.

     

    Emilio Callen.