Техническая Спецификация для Cisco 2912mf xl

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• Secures a port to an individual MAC address group of
up to 132 MAC addresses; addresses can be learned or
manually entered; can prevent unauthorized stations
from accessing the switch.
• Password-protected in-band and out-of-band
management provides protection against unauthorized
configuration changes and secures against unwanted
intruders. Provides administrators the choice of level of
security, notification, and resulting actions.
• TACACS+ authentication enables centralized control of
the switch and restricts unauthorized users from altering
the configuration.
• Private VLAN Edge provides security and isolation
between ports on a switch, ensuring that voice traffic
travels directly from its entry point to the aggregation
device through a virtual path and cannot be directed to
a different port.
• Support for the optional Cisco 600-watt redundant
AC power system provides a backup power source
for up to four units for improved fault tolerance and
network uptime.
• Multilevel security on the console access prevents
unauthorized users from altering the switch
• Cisco Uplink Fast technology ensures quick failover
recovery, enhancing overall network stability and
• Cross-stack Uplink Fast (CSUF) technology provides
increased redundancy and network resiliency through
fast spanning-tree convergance (less than 2 seconds)
across a stack of switches using Gigastack GBICs.
• Redundant stacking connections support a redundant
loopback connection in top and bottom switches in
a stack.
• Command Switch Redundancy allows customers to
designate a backup command switch, which takes over
cluster management functions in the event of a failure of
the primary command switch.
• Unidirectional Link Detection (UDLD) detects and
disables unidirectional links caused by incorrect wiring
or interface faults, preventing Spanning Tree loops.
Technical Specifications
• 3.2 Gbps switching fabric
• 3.0 million-pps forwarding rate for 64-byte packets
• 1.6 Gbps maximum forwarding bandwidth
• 4-MB shared-memory architecture shared by all ports
• Packet forwarding rate for 64-byte packets:
– 14,880 pps to 10-Mbps ports
– 148,800 pps to 100BaseT ports
• 8-MB DRAM and 4-MB Flash memory
• 8192 MAC addresses
• SNMP Management Information Base (MIB) II, SNMP
MIB extensions, Bridging MIB (RFC 1493)
• IEEE 802.3x full duplex on 10Base-T and
100Base-T ports
• IEEE 802.1D Spanning-Tree Protocol
• IEEE 802.3u 100Base-TX and 100Base-FX specification
• IEEE 802.3 10Base-T specification
• IEEE 802.3z
• IEEE 802.3ab
Connectors and Cabling
• 10Base-T ports: RJ-45 connectors; two-pair Category 3,
4, or 5 unshielded twisted-pair (UTP) cabling
• 100Base-TX ports: RJ-45 connectors; two-pair
Category 5 UTP cabling
• Management console port: RJ-45 connector
• Per-port status LEDs—link integrity, disabled, activity,
speed, and full-duplex indications
• System status LEDs—system, RPS, module status, and
bandwidth utilization indications
Dimensions and Weight (H x W x D)
• 3.46 x 17.5 x 12 in. (8.8 x 44.5 x 30.5 cm)
• 13.5 lb (6.12 kg)
• 15 lb (6.8 kg) with two modules installed