Extreme Networks ExtremeWare XOS Command Reference Manual page 154

ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
Commands for Managing the Switch
Example
The following command deletes the user guest from the group UserGroup for the security model
:
snmpv2c
configure snmpv3 delete group UserGroup user guest sec-model snmpv2c
The following command deletes the user guest from the group userGroup with the security model :
USM
configure snmpv3 delete group userGroup user guest
History
This command was first available in ExtremeWare XOS 10.1.
The and the parameters were added in ExtremeWare XOS 11.0.
hex_group_name hex_user_name
Platform Availability
This command is available on all platforms.
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ExtremeWare XOS 11.5 Command Reference Guide