Extreme Networks ExtremeWare XOS Command Reference Manual page 1711

ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
configure bgp peer-group maximum-prefix
Example
The following command configures the maximum number of IP prefixes accepted from the peer group
outer to 5000, sets the threshold for warning messages to 60%, and specifies SNMP traps:
configure bgp peer-group outer maximum-prefix 5000 threshold 60 send-traps
History
This command was first available in ExtremeWare XOS 10.1.
This command required an Advanced Core license in ExtremeWare XOS 11.1.
Platform Availability
This command is available on platforms with a Core or an Advanced Core license.
1711
ExtremeWare XOS 11.5 Command Reference Guide