SNMPv3 Context

[hmc2500]

If you configure context on a cisco device like the below  line. What should the context name be on the snmp server host?

snmp-server group v3group v3 auth context vlan- match prefix

[balaji.bandi]

you are matching the context vlan- 

context vlan-(vlanid) 

[hmc2500]

I understand this "context vlan- match prefix" means match any vlan id on the switch. The switches could have different vlan id's. How could you match all vlans with the context name on the server?

[balaji.bandi]

that is not an authentication mechanism, you need to configure NMS as per the screen example :