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.
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.
An IP address has to be unique on the VLAN that it's in. Since you have the same address configured on both switches that is a big no no. The 5300 is doing all your routing so it should be the only one to have those IP addresses.
That's kind of what I'm telling you but I wouldn't bother putting those IP addresses on for VLAN10,20,30 etc. A VLAN does not have to have an IP address.
This would be config I would base my edge switches on:
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 tagged 49 exit vlan 20 name "vlan20-d" untagged 2 tagged 49 exit vlan 30 name "vlan30-d" untagged 3 tagged 49 exit vlan 40 name "vlan40-d" untagged 4 tagged 49 exit vlan 50 name "vlan50-d" untagged 5 tagged 49 exit vlan 90 name "vlan90-d" untagged 6 tagged 49 exit spanning-tree password manager
The other edge switches would be the same, except they would each have a different IP addresses in VLAN1
vlan 1 name "DEFAULT_VLAN" untagged 7-48,50 ip address 10.3.100.103 255.255.255.0 tagged 49 no untagged 1-6 exit
The default gateways will remain pointing to the .1 addresses that is already configured on the 5400. The 5400's configuration is fine the way it is.
Great to hear it's working now.... regarding this configuration getting lost on reboot, not too sure about that. Make sure you're running the latest firmware on the switch maybe? Otherwise try a different switch.
