SRX

Hi!

We have 2 SRX240 with JunOS 12.1X44-D10.4. We have several VLANs on the same redundant interface. For each VLAN, we have a different subnet, and a dedicate DHCP pool. Now I have the problem that the DHCP server serves the wrong pool.

Here's the relevant config:

# show system services dhcp
maximum-lease-time 86400;
default-lease-time 86400;
domain-name esc.empolisservices.com;
name-server {
    10.9.0.8;
    10.9.0.9;
}
traceoptions {
    file dhcp.dbg;
    level all;
    flag all;
}
pool 10.9.0.0/24 {
    address-range low 10.9.0.201 high 10.9.0.240;
    router {
        10.9.0.1;
    }
    propagate-settings reth0.90;
}
pool 10.9.1.0/24 {
    address-range low 10.9.1.201 high 10.9.1.240;
    router {
        10.9.1.1;
    }
    propagate-settings reth0.91;
}

# show interfaces reth0
vlan-tagging;
redundant-ether-options {
    redundancy-group 10;
    lacp {
        passive;
    }
}
unit 0 {
    vlan-id 1;
    family inet {
        address 10.8.129.1/24;
    }
}
unit 90 {
    vlan-id 90;
    family inet {
        address 10.9.0.1/24;
    }
}
unit 91 {
    vlan-id 91;
    family inet {
        address 10.9.1.1/24;
    }
}

A host on VLAN 91 gets an address for VLAN 90. Even the log shows this strange entry:

Jun 11 19:52:52 -- looking for pool with subnet 10.9.1.1, prefix length 32
Jun 11 19:52:52 -- [pfxlen 16] Found pool `10.9.0.0/24'

What could be wrong?

Thanks

Martin

DHCP is not supported in clusters currently...

See Known Limitations in the Release Notes -- scroll down about a page or two to the DHCP section:

Dynamic Host Configuration Protocol (DHCP)

• On all branch SRX Series and J Series devices DHCP is not supported in a chassis cluster.

Ok, thanks for the hint...

I just set up a dedicated DHCP server (I planned that anyways) and enabled the SRX's DHCP relay feature, that seems to work so far.

Ciao

Martin