host-identifier and option 82

[Michal Vančo]

Sure. All of this is dependent on particular implementation of dhcp snooping. Fundamental principle is, use whatever your platform offers to put anything unique into any option 82 field ;)

On 28.1.2012, at 23:35, Christian Kratzer wrote:

> Some switches only support circuit-id with "ip dhcp snooping vlan 1 information option format-type circuit-id string".
> 
> It seems subscriber-id is supported more often on layer3 interfaces of routers and circuit-id is found on layer2 interfaces of lan switches.  But as you can stuff any string into both of them just use what you get.