Technical Specifications
•Physical Interfaces
––RJ-45 Connectors for 10BASE-T, 100BASE-TX, and 1000BASE-T (Auto Uplink™ on all ports):
GSM7224R 24 ports GSM7248R 48 ports
––Small form-factor pluggable (SFP) modules for fiber Gigabit Ethernet interfaces:
GSM7224R 4 slots GSM7248R 4 slots ––RS-232 console port
•Layer 2 Services
––IEEE 802.1Q static VLAN (512) ––IEEE 802.1p Class of Service (CoS) ––IEEE 802.1D Spanning Tree Protocol
––IEEE 802.1v Protocol VLAN & Port VLAN and MAC-based VLAN
––IEEE 802.1 Q-in-Q
––IEEE 802.1w Rapid Spanning Tree ––IEEE 802.1s Multiple Spanning Tree ––IEEE 802.3ad Link Aggregation (LACP) ––IEEE 802.1x port access authentication ––IGMP v1, v2 snooping support
––Network storm protection including broadcast, multicast and unicast traffic
––Static multicast filtering
––Ingress rate limit in 1 Kbps increments
––Weighted round robin (WRR) queue technology
•Layer 3 Services ––Static routing ––ARP
•Switch Management Specifications
––SNMP v1, v2c, v3 with multiple IP addresses
––RFC 1157, 1902-1907 ––RFC 768 UDP
––UDP relay
––RFC 854-859 telnet ––RFC 951 BOOTP ––RFC 1213 MIB II
––RFC 1757 RMON groups 1,2,3, and 9 ––RFC 1215 SNMP Traps
––RFC 1493 Bridge MIB
––RFC 1643 Ethernet Interface MIB
––RFC 1534 DHCP and BOOTP interoperation
––RFC 2131, 2132 DHCP and BOOTP
––RFC 2865 RADIUS (both switch and management access)
––RFC 2866 RADIUS accounting ––Private Enterprise MIB
––Port mirroring support (many-to-one) ––RFC 2236 IGMP v2
––IGMP Querier
––DiffServ QoS (RFC 2998)
––DHCP/BOOTP relay-primary and backup (RFC 3046, option 82)
––RFC 2030 Simple Network Time Protocol (SNTP)
––DHCP server ––GARP/GVRP ––SYSLOG
––Firmware upgrade via TFTP or HTTP ––Port description
––ACL
•Performance Specifications ––Forwarding modes: Store-and-forward
––Bandwidth:
GSM7224R: 48 Gbps (non-blocking)
GSM7248R: 96 Gbps (non-blocking)
––Switch latency: 20 us for 64-byte frames (1G to 1G)
––System memory: 64 MB
––Packet buffer memory: GSM7224R: max support 0.75 MB buffer memory
GSM7248R: max support 1.5 MB buffer memory
––Code storage (flash): 32 MB
––Address database size: 8K media
access control (MAC) addresses ––Number of VLANs: 512 (1-4061) ––Number of trunks: 16 ––Number of queues: 8 ––Number of static route: 32 ––Number of routed VLANs: 32 ––Number of ARP entries: 480 ––Number of ACL rules: 224
––Jumbo frame support: up to 9K packet size
––Acoustic noise: GSM7224R: 38.6 dB GSM7248R: 48.8 dB
––Heat Dissipation: GSM7224R: 131.439 BTU/hr GSM7248R: 244.101 BTU/hr
––Mean time between failure (MTBF): GSM7224R: 239,032 hours (~27 years) GSM7248R: 162,303 hours (~19 years)
––User interfaces
––Command Line Interface (CLI) via console port (5 sessions)
––Web-based management via embedded HTTP server protected with Secure Sockets Layer
––(SSLv3) or Transport Layer Security (TLS v1)
––Telnet remote login (5 sessions) securable with Secure Shell (SSH v1.5, v2)
PDA