DHCP... What Gives...

[psycho.chicken]

I'm stuck..

I cant get dhcp to relay...

If i manually set IP's i can ping across vlan's just fine...

If I am on the same switch, and same vlan, i can get an address...
If I am on a different switch, but same vlan... i get nothing...

Different switch different vlan... nothing

Same switch different vlan.. nothing...

I set up all vlan's to use the helper ip and enabled dhcp relay...

what gives...?

[psycho.chicken]

A little more info...

5300 is 10.3.100.200

2650 is 10.3.100.201

i created a vlan100 10.3.100.1

[Matt Hobbs]

What DHCP Server are you using? Is the default gateway on the DHCP server set correctly?

[psycho.chicken]

5403xl



hostname "wa_5406zl_01"
snmp-server contact "Systems"
module 1 type J8702A
module 2 type J8702A
ip routing
snmp-server community "public" Unrestricted
vlan 1
name "DEFAULT_VLAN"
untagged A2-A11,A13-A24,B7-B24
ip address 10.3.100.101 255.255.255.0
tagged A1
no untagged A12,B1-B6
exit
vlan 10
name "vlan10-d"
untagged B1
ip helper-address 10.3.0.70
ip address 10.3.10.1 255.255.255.0
tagged A1
exit
vlan 20
name "vlan20-d"
untagged B2
ip address 10.3.20.1 255.255.255.0
tagged A1
exit
vlan 30
name "vlan30-d"
untagged B3
ip address 10.3.30.1 255.255.255.0
tagged A1
exit
vlan 40
name "vlan40-d"
untagged B4
ip address 10.3.40.1 255.255.255.0
tagged A1
exit
vlan 50
name "vlan50-d"
untagged B5
ip address 10.3.50.1 255.255.255.0
tagged A1
exit
vlan 90
name "vlan90-d"
untagged A12,B6
ip helper-address 10.3.0.70
ip address 10.3.0.200 255.255.255.0
tagged A1
exit
vlan 100
name "vlan100-m"
tagged A1
no ip address
exit
spanning-tree
password manager





--------------------------------

2650


hostname "wa_vlan10_01"
snmp-server contact "systems"
ip default-gateway 10.3.100.200
snmp-server community "public" Unrestricted
vlan 1
name "DEFAULT_VLAN"
untagged 7-48,50
ip address 10.3.100.102 255.255.255.0
tagged 49
no untagged 1-6
exit
vlan 10
name "vlan10-d"
untagged 1
ip address 10.3.10.1 255.255.255.0
ip helper-address 10.3.0.70
tagged 49
exit
vlan 20
name "vlan20-d"
untagged 2
ip address 10.3.20.1 255.255.255.0
tagged 49
exit
vlan 30
name "vlan30-d"
untagged 3
ip address 10.3.30.1 255.255.255.0
tagged 49
exit
vlan 40
name "vlan40-d"
untagged 4
ip address 10.3.40.1 255.255.255.0
tagged 49
exit
vlan 50
name "vlan50-d"
untagged 5
ip address 10.3.50.1 255.255.255.0
tagged 49
exit
vlan 90
name "vlan90-d"
untagged 6
ip address 10.3.0.200 255.255.255.0
ip helper-address 10.3.0.70
tagged 49
exit
spanning-tree
password manager

[psycho.chicken]

dhcp server is a w2k3 box

had scopes of

vlan10
10.3.10.200-250
255.255.255.0
10.3.10.1

vlan20
10.3.20.200-250
255.255.255.0
10.3.20.1

etc...

vlan90
10.3.0.215-225
255.255.255.0
10.3.0.200


dhcp server was set up with
10.3.0.70
255.255.255.0
10.3.0.200

[Matt Hobbs]

You have the same IP addresses configured on your 2600 VLANs... leave only the IP address for the management VLAN, the others do not need an IP address. At the moment you're causing IP conflicts which is probably confusing the DHCP Server.

Also seen a few instances lately where the 5400 just needs to be rebooted for DHCP-Relay to work properly.

Don't forget to assign points along the way to any replies you receive.

[psycho.chicken]

So do i not give my actual hardware a IP address?

What is the proper way to manage the device...

Would i just give the switches IP's in one of the exhisting subnets?

[psycho.chicken]

I'm not seeing the duplicate IP's your talking about...

(I could be blind today...)

[psycho.chicken]

I havebt created a management vlan either...

[Matt Hobbs]

Each of your edge switches only requires one IP address for management. So for your 2600 you had:

vlan 1
name "DEFAULT_VLAN"
untagged 7-48,50
ip address 10.3.100.102 255.255.255.0
tagged 49
no untagged 1-6
exit
vlan 10
name "vlan10-d"
untagged 1
ip address 10.3.10.1 255.255.255.0
ip helper-address 10.3.0.70
tagged 49
exit

Keep the IP address of VLAN1, it's fine since it is different to the 5300. You need to do is remove the IP address on VLAN 10 (which is the same as the IP address on the 5300). You also need to remove those IP addresses on all those other VLANs.

You could also give those VLANs different IP addresses, e.g 10.3.10.2, but there's no need.