SNMPv2-MIB::sysDescr.0 = STRING: ExtremeXOS (Stack) version 15.1.1.6 v1511b6 by release-manager on Sat Feb 11 10:58:06 EST 2012
SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.1916.2.93

#24 ports 10/100/1000BASE-T with auto-speed and auto-polarity 4 ports SFP
(mini-GBIC, shared PHY with 4 10/100/1000BASE-T ports)
# 1 port Serial (control port)
# 1 10/100BASE-T out-of-band management
# combo 21,22,23,24

"Manufacturer's markup of device's ports: (1, 2, 3, 4) and stackable (1:1,
2:2)"