Option 82 problem

[Александр Сандецкий]

Hi!

I have a problem with option 82 configuration.

I have managed switch with IP 10.10.0.38 (managed VLAN 100). There is
additional VLANs configured for clients: VLAN 3000 and 3010. There is
option 82 and DHCP relay configured on the switch.

I have DHCP server placed in VLAN 3000 with IP 172.18.0.101

I want to DHCP server serves the VLAN 3010 (and other) on per-VLAN basis.

The part of dhcpd.conf

class "VLAN3010" {
        match if binary-to-ascii(10, 8, "", substring(option
agent.circuit-id, 2, 2)) = "3010"
    }


subnet 172.18.10.0 netmask 255.255.255.0 {
    option routers  172.18.0.1;

    pool {
            range 172.18.10.51 172.18.10.250;
            allow members of "VLAN3010";
    }
}


The server receives request as
DHCPDISCOVER from 2c:27:d7:b1:a2:85 via 10.10.0.38: network 10.10.0.0/24:
no free leases



I have checked with Wireshark

   Option: (82) Agent Information Option
        Length: 18
        Option 82 Suboption: (1) Agent Circuit ID
            Length: 6
            Agent Circuit ID: 00040bc20003
        Option 82 Suboption: (2) Agent Remote ID
            Length: 8
            Agent Remote ID: 00068026897b2b40

There is binary encoded agent circuit id that contains "0bc2" bytes that
equal to "3010" in decimal.

Why my class definition does not accept this request? What is wrong?



-- 

Regards,
Alexander
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