Specifications

Technology Upgrade Data Network 28 6200-4
1224_01
DiffServ
4. Rate limiting — sets per-port ingress enforced maximums and per-port, per-queue
minimums
I. Connectivity
1. Up to two optional 10-Gigabit ports (SFP+ and/or 10GBASE-T)
2. Two-port stacking module with up to 40 Gb/s per port
J. IPv6 —
1. IPv6 host — allows the switches to be managed and deployed at the edge of IPv6
networks
2. Dual stack (IPv4/IPv6) — provide transition mechanism from IPv4 to IPv6;
supports connectivity for both protocols
3. IEEE 802.3at Power over Ethernet (PoE+) — provide up to 30 W per port that
allows support of the latest PoE+-capable devices such as IP phones, wireless
access points, and security cameras.
4. Pre-standard PoE support — detect and provide power to pre-standard PoE
devices
K. Convergence
1. IP multicast snooping and data-driven IGMP — automatically prevent flooding of
IP multicast traffic
2. LLDP-MED (Media Endpoint Discovery) — defines a standard extension of LLDP
that stores values for parameters such as QoS and VLAN to automatically
configure network devices such as IP phones
3. IEEE 802.1AB Link Layer Discovery Protocol (LLDP) — facilitates easy mapping
using network management applications with LLDP automated device discovery
protocol
4. PoE and PoE+ allocations — support multiple methods (automatic, IEEE 802.3at
dynamic, LLDP-MED fine grain, IEEE 802.3af device class, or user-specified) to
allocate and manage PoE/PoE+ power for more efficient energy savings
5. Local MAC Authentication — assigns attributes such as VLAN and QoS using
locally configured profile that can be a list of MAC prefixes
L. Resiliency and high availability
1. IEEE 802.1s Multiple Spanning Tree — provides high link availability in multiple
VLAN environments by allowing multiple spanning trees; provides legacy support
for IEEE 802.1d and IEEE 802.1w
2. IEEE 802.3ad Link Aggregation Control Protocol (LACP)
3. Ring and chain stacking topology — allows failure of a link or switch in the ring of
stacked switches, while the remaining connected switches continue operation
M. Management
1. SNMPv1, v2, and v3 — provide complete support of SNMP; provide full support of
industry-standard Management Information Base (MIB) plus private extensions;
SNMPv3 supports increased security using encryption
2. Out-of-band Ethernet management port — enables management over a separate
physical management network, keeping management traffic segmented from
network data traffic
N. Manageability
1. Friendly port names — allow assignment of descriptive names to ports
2. RMON, XRMON, and sFlow — provide advanced monitoring and reporting
capabilities for statistics, history, alarms, and events
3. Uni-Directional Link Detection (UDLD) — monitors a link between two switches
and blocks the ports on both ends of the link if the link goes down at any point
between the two devices
O. Layer 2 switching
1. VLAN support and tagging — supports IEEE 802.1Q (4,094 VLAN IDs) and 256
VLANs simultaneously
2. GARP VLAN Registration Protocol — allows automatic learning and dynamic
assignment of VLANs