Bonded Network interfaces and DHCP snooping

[Sheepdog]

I have a synology NAS connected to an HP 3500yl network switch. The NAS has bonded interfaces using link aggregation that doesn't require configuration on the switch. However with dhcp-snooping and arp-protection enabled, it seems I can only configure ip source-binding to one of the 2 ports. This poses a problem when I reboot the switch as the device doesn't come online unless I disable the second port at the switch, wait a few seconds and enable the port. Is there a way to source bind both ports to that one IP address or should I enable LACP if possible and will that solve the problem with 2 mac-addresses?

[akg7]

Hello @Sheepdog,

Are both ports on switch not part of aggregation?

Can you share the config of both ports?

LACP might solve this problem but want to know the connectivity from switch towards NAS.

Thanks!

[Sheepdog]

That is correct, on the switch ports are independent.

interface 6
name "gknc-nas2 port 1"
tagged vlan 20,30,40,80
untagged vlan 2
port-security learn-mode static mac-address 001132-3c8c55
ip source-binding 2 10.240.0.9 e03f49-a41bcc
ip source-binding 2 10.240.0.11 10604b-7500b2
ip source-binding 2 10.240.0.22 b4b686-db57a0
ip source-binding 2 10.240.0.55 001132-3c8c55
ip source-binding 2 10.240.0.72 000c29-aa4c75
ip source-binding 2 10.240.0.100 080027-ea92fc
ip source-binding 2 10.240.0.125 b827eb-1518a2
ip source-binding 40 10.240.40.1 000c29-163bd6
ip source-binding 40 10.240.40.6 000c29-b97dbd
ip source-binding 40 10.240.40.9 000c29-28d935
ip source-binding 80 10.240.80.1 000c29-b78c19
ip source-binding 80 10.240.80.2 000c29-49b42a
ip source-binding 80 10.240.80.6 000c29-aa4c75
spanning-tree admin-edge-port
exit
interface 7
name "gknc-nas2 port 2"
tagged vlan 20,30,40,80
untagged vlan 2
port-security learn-mode static mac-address 001132-3c8c56
spanning-tree admin-edge-port
exit

[akg7 · Accepted solution]

Hello @Sheepdog ,

How the interfaces configured at NAS side, means is it in Active/Active or Active/Standby?

Try to configure LACP, it might solve the problem.

Thanks!

[Sheepdog]

I set it up as LACP and that seems to have solved the issue.