DHCP Relay Agent

[techie08]

Ive just set up the DHCP relay agent on my HP procurve switch and entered the ip addrees of of our DHCP server for vlan 100 but its not assigning DHCP address. IP routing is enabled on the switch and ive also created a new DHCP scope on the server. VLAN 100 also has an IP address set on the switch. Does any one have any ideas on why DHCP is not giving out IP address for the new range?

Everything on vlan 1 is fine and picking up an address.

[FN-GM]

Have you setup IP Helpers?

If you give a static ip to a machine on the other VLAN does everything network wise work?

[Geoff]

What did the windows server think? Did it issue an IP lease? Anything in the logs on the procurve? Also post your actual config.

[FN-GM]

Have you given the VLAN an IP Address?

[timbo343]

Have you given the DHCP server the default gateway address of vlan100

[techie08]

Have you setup IP Helpers?

If you give a static ip to a machine on the other VLAN does everything network wise work?

Yes it does.

[techie08]

The VLAN does have an ip address in the same range as the new DHCP scope and yes the DG is the ip address of vlan 100

[timbo343]

Not too sure if this helps... but i have got my 1 DHCP server working and giving out IP addresses through VLANs

Running configuration:

; J8770A Configuration Editor; Created on release #L.11.20

hostname "ProCurve Switch 4204vl"
snmp-server contact "xxxx"
snmp-server location "xxxx"
max-vlans 256
module 1 type J8768A
module 2 type J9033A
module 3 type J9033A
module 4 type J9033A
ip default-gateway 172.16.24.8
ip routing
snmp-server community "public" Unrestricted
vlan 1
   name "DEFAULT_VLAN"
   untagged A1,A3-A24,B1-B24,C1-C24,D1-D24
   ip address 172.16.24.24 255.255.248.0
   ip helper-address 172.16.24.4
   no untagged A2
   ip igmp
   exit
vlan 2
   name "Staff-BYOD"
   untagged A2
   ip address 192.168.12.1 255.255.252.0
   ip helper-address 172.16.24.4
   tagged A1,A3-A4,A9,A11,A14
   exit
vlan 3
   name "Stu-BYOD"
   ip address 192.168.16.1 255.255.248.0
   ip helper-address 172.16.24.4
   tagged A1,A3-A4,A9,A11,A14
   exit
vlan 4
   name "Guests_BYOD"
   ip address 192.168.24.1 255.255.255.0
   ip helper-address 172.16.24.4
   tagged A3-A4,A9,A11,A14
   exit
ip route 0.0.0.0 0.0.0.0 172.16.24.8
spanning-tree

[FN-GM]

You will need an IP Helper Address just like the config above.

[techie08]

I have an ip helper address on my DHCP server on VLAN100 of the switch. Would the default gateway on the DHCP server need to that of the vlan 1 IP adresss where the DHCP server sits?

[timbo343]

My DHCP server settings are:

IP: 172.16.24.4
Subnet: 255.255.248.0
D GW: 172.16.24.24

DNS1: 172.16.24.5
DNS2: 172.16.24.3

[FN-GM]

Would the default gateway on the DHCP server need to that of the vlan 1 IP adresss where the DHCP server sits?

This doesn't need changing.

Please can you post your HP config up?

[techie08]

Running configuration:

; J8697A Configuration Editor; Created on release #K.15.07.0008
; Ver #02:1b.2f:36

hostname "SVR-Servers1"
module 1 type J8702A
module 2 type J8705A
module 3 type J8705A
module 4 type J8702A
module 6 type J8708A
interface A1
no power-over-ethernet
exit
interface A2
no power-over-ethernet
exit
interface A3
no power-over-ethernet
exit
interface A4
no power-over-ethernet
exit
interface A5
no power-over-ethernet
exit
interface A6
no power-over-ethernet
exit
interface A7
no power-over-ethernet
exit
interface A8
no power-over-ethernet
exit
interface A9
no power-over-ethernet
exit
interface A10
no power-over-ethernet
exit
interface A11
no power-over-ethernet
exit
interface A12
no power-over-ethernet
exit
interface A13
no power-over-ethernet
exit
interface A14
no power-over-ethernet
exit
interface A15
no power-over-ethernet
exit
interface A16
no power-over-ethernet
exit
interface A17
no power-over-ethernet
exit
interface A18
no power-over-ethernet
exit
interface A19
no power-over-ethernet
exit
interface A20
no power-over-ethernet
exit
interface A21
no power-over-ethernet
exit
interface A22
no power-over-ethernet
exit
interface A23
no power-over-ethernet
exit
interface A24
no power-over-ethernet
exit
interface C1
no power-over-ethernet
exit
interface C2
no power-over-ethernet
exit
interface C3
no power-over-ethernet
exit
interface C4
no power-over-ethernet
exit
interface C5
no power-over-ethernet
exit
interface C6
no power-over-ethernet
exit
interface C7
no power-over-ethernet
exit
interface C8
no power-over-ethernet
exit
interface C9
no power-over-ethernet
exit
interface C10
no power-over-ethernet
exit
interface C11
no power-over-ethernet
exit
interface C12
no power-over-ethernet
exit
interface C13
no power-over-ethernet
exit
interface C14
no power-over-ethernet
exit
interface C15
no power-over-ethernet
exit
interface C16
no power-over-ethernet
exit
interface C17
no power-over-ethernet
exit
interface C18
no power-over-ethernet
exit
interface C19
no power-over-ethernet
exit
interface C20
no power-over-ethernet
exit
interface D1
no power-over-ethernet
exit
interface D2
no power-over-ethernet
exit
interface D3
no power-over-ethernet
exit
interface D4
no power-over-ethernet
exit
interface D5
no power-over-ethernet
exit
interface D6
no power-over-ethernet
exit
interface D7
no power-over-ethernet
exit
interface D8
no power-over-ethernet
exit
interface D9
no power-over-ethernet
exit
interface D10
no power-over-ethernet
exit
interface D11
no power-over-ethernet
exit
interface D12
no power-over-ethernet
exit
interface D13
no power-over-ethernet
exit
interface D14
no power-over-ethernet
exit
interface D15
no power-over-ethernet
exit
interface D16
no power-over-ethernet
exit
interface D17
no power-over-ethernet
exit
interface D18
no power-over-ethernet
exit
interface D19
no power-over-ethernet
exit
interface D20
no power-over-ethernet
exit
interface D21
no power-over-ethernet
exit
interface D22
no power-over-ethernet
exit
interface D23
no power-over-ethernet
exit
interface D24
no power-over-ethernet
exit
ip routing
vlan 1
name "DEFAULT_VLAN"
untagged A1-A8,A10-A24,B1-B24,C1-C24,D1-D24,F1-F4
ip address 10.43.113.73 255.255.248.0
no untagged A9
exit
vlan 100
name "BYOD"
untagged A9
ip helper-address 10.43.112.4
ip address 10.74.220.5 255.255.254.0
tagged B24,F1
exit
power-over-ethernet pre-std-detect
no ip ssh
interface F1
flow-control
exit
snmp-server community "public" unrestricted
snmp-server host 10.43.112.12 community "public"
snmp-server host 10.43.115.40 community "public"
snmp-server location "Server Room"
password manager
password operator

[FN-GM]

What is the IP address of 10.43.112.4? I assume its not your DHCP server as it doesn't fall into the same range as the devices in VLAN 1. Does the DHCP server live in VLAN 1?

[techie08]

What is the IP address of 10.43.112.4? I assume its not your DHCP server as it doesn't fall into the same range as the devices in VLAN 1. Does the DHCP live in VLAN 1?

Its in the same subnet and its the dhcp server.