Switch port fast and ip dhcp isssue

[magyshanks2020]

I got switch 1  is server   vtp and another switch 2 client vtp

on the link  trunk port ..

i made the config as follows in the server switch in the trunk linking port

switchport encapsulation dot 1 q

switchport mode trunk

ip dhcp snooping trust

spanning tree port fast ( is that correct to make spanning tree? between the  trunk port ? why?)

on the client switch

switchport encapsulation dot 1 q

switchport mode trunk

spanning tree port fast ( is that correct to make spanning tree? between the  trunk port ? why?)

the other question, when i type  on the Client switch ip dhcp snopping trust  it gives .. invalid marker and not accepting the command on any port.. why?

[paul driver]

Hello

You shouldn't have stp portfast enabled on trunks,in your case it wont make any difference as that specific command is for edge ports not trunks ports however there is a stp portfast for trunks and this shouldn't be applied to switch interconnect trunks, its really only for trunks interconnected with dual nic servers running mainly in vm's

As for dhcp snooping, trusting a upstream trunk is applicable, so not able to apply it possibly suggests you may not have dhcp snooping enabled on the client switch or that particular switch has a non applicable software or its running an in appropriate SDM switch template.

Client switch
sh ip dhcp snooping
sh sdm prefer
sh version