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  • 1.  SRX320 and DHCP static binding

    Posted 03-19-2020 17:36

    Hi all,

     

    We have an SRX320 with JunOS 18.2R3-S2, and we need to create a DHCP static binding with overrided parameters (DNS and domain name should be differ from pool settings).

    In old JunOS, I would do it like:

     

                static-binding 00:aa:bb:cc:01:aa {
                    fixed-address {
                        192.168.0.10;
                    }
                    domain-name company.net;
                    name-server {
                        192.168.0.1;
                        192.168.0.2;
                    }

    But how to do it with Address Pools on the modern JunOS version?

     



  • 2.  RE: SRX320 and DHCP static binding

     
    Posted 03-19-2020 18:13

    Hi Uhu,

     

    First, refer https://kb.juniper.net/KB34617 for information on how DHCP is configured on the updated Junos codes.

     

    You will find static binding configuration at 'host'

    root@juniper# set access address-assignment pool b family inet ?
    Mar 20 02:16:02
    Possible completions:
    <[Enter]> Execute this command
    + apply-groups Groups from which to inherit configuration data
    + apply-groups-except Don't inherit configuration data from these groups
    > dhcp-attributes DHCP options and match criteria
    > excluded-address Excluded Addresses
    > excluded-range Excluded address range
    > host Hostname for static reservations                     <<<<here 
    network Network address
    > range Address range
    > xauth-attributes Configure xauth attributes
    | Pipe through a command

     

    This should allow you to bind a hardware address to an ip.

     

    Let us know if there are questions.

    Cheers

    Pooja

    Please Mark My Solution Accepted if it Helped, Kudos are Appreciated too!!!



  • 3.  RE: SRX320 and DHCP static binding

    Posted 03-20-2020 01:47

    Hi Pooja,

     

    I know how to bind a hardware address to an ip on the updated Junos. This ist not my question.

     

    My question is: how to override DHCP pool settings for binded address? E.g. set different domain name and DNS for this particular address. Above I have written an example how I used to do it on the old Junos. How to do the same on the new Junos?

     

    Thank you.

     

     



  • 4.  RE: SRX320 and DHCP static binding

     
    Posted 03-20-2020 12:01

    Uhu,

     

    My apologies,  I interpreted your question incorrectly.

     

    Let me check this and get back to you.

     

    Cheers

    Pooja



  • 5.  RE: SRX320 and DHCP static binding

    Posted 03-25-2020 14:07

    Iv'e been looking for a way to do this too to no avail...



  • 6.  RE: SRX320 and DHCP static binding

    Posted 05-12-2020 08:43

    Does this mean that only the old DHCP daemon supports individual host dhcp attributes?  I just converted my config to jDHCP but I am afraid I will have to convert it back now.

     

    --BobG



  • 7.  RE: SRX320 and DHCP static binding

    Posted 05-26-2020 02:57

    Hi,

     

    Any updates here?



  • 8.  RE: SRX320 and DHCP static binding

    Posted 03-09-2021 16:04
    resurrecting this thread.

    JTAC said about a year ago that this is not supported in the 'newer' jdhcp. Only supported on old dhcp on SRX.


    Curious if this is going to be fixed anytime soon in JUNOS?
    Painful, that we lost this feature when moving from old DHCP server on SRX to new JDHCP --- i.e. the ability to have a different DNS server defined for a host reservation...