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SRX340 DHCP wrong pool

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  • 1.  SRX340 DHCP wrong pool

    Posted 02-07-2020 04:06

    Hello,

     

    End-devices receive IP addresses from wrong DHCP pool. This situation is described here:

     

    https://kb.juniper.net/InfoCenter/index?page=content&id=KB3222

     

    But unfortunately using parameter requested-ip-interface-match or requested-ip-network-match doesn't change this behavior. 

     

     

    root@SRX2# show system services dhcp-local-server    
    group office {
        interface reth0.10;
    }
    group mobile {
        interface reth0.100;
    }
    requested-ip-interface-match;
    
    
    root@SRX2# show access address-assignment 
    pool office {
        family inet {
            network 192.168.4.0/24;
            range range1 {
                low 192.168.4.10;
                high 192.168.4.253;
            }
            dhcp-attributes {
                name-server {
                    192.168.4.1;
                }
                router {
                    192.168.4.1;
                }
            }
    
    pool mobile {
        family inet {
            network 192.168.100.0/24;
            range range1 {
                low 192.168.100.20;
                high 192.168.100.253;
            }
            dhcp-attributes {
                name-server {
                    192.168.100.1;
                }
                router {
                    192.168.100.1;
                }
            }
    
    root@SRX2# show interfaces reth0 unit 10 
    description cable-network;
    vlan-id 10;
    family inet {
        address 192.168.4.1/24 {
            primary;
        }
        address x.x.x.x/24;
    }
    
    {primary:node1}[edit]
    root@SRX2# show interfaces reth0 unit 100   
    description mobile-network;
    vlan-id 100;
    family inet {
        address 192.168.100.1/24 {
            primary;
        }
        address y.y.y.y/24;
    }
    

    .

     Do you have any idea what else to do?



  • 2.  RE: SRX340 DHCP wrong pool
    Best Answer

    Posted 02-07-2020 04:22

    Ok, I fixed the issue.

     

    After using the parameter:

     

    requested-ip-interface-match
    

    And commiting, restarting softly and gracefully DHCP server nothing worked better.

     

    I had to manually clear BAD bindings from wrong pools.

     

    I found them using the command:

     

    root@SRX2# run show dhcp server binding | match reth0.100 | grep 192.168.4.    

    And then cleared each binding.