Gigabit Ethernet Switch Fabric for the Switch 7700
The Switch Fabric Module is the core of the 3Com Switch 7700
system. The Switch Fabric performs route calculation and provides
all Layer 3 switching functionality. It also performs Layer 2
switching between interface modules and where on-board Layer 2
switching is not possible. Based on the address-forwarding table,
the hardware performs line-speed switching of Layer 2 / Layer 3
data packets. VLANs, link aggregation, QoS traffic classification
and prioritization, and ACLs (Access Control Lists) are also
supported by the hardware.
In addition to switching functions, the Switch Fabric Module
performs control and management functions for the system. The
management channel performs such functions as initialization and
configuration of the system, data packet learning, protocol
processing, and network management. It also provides environmental
monitoring, software upgrade and interface module control.
The Switch Fabric Module is essential for 3ComŽ Switch 7700 system
operation and must be installed into the top slot to connect to the
chassis backplane. It is included in the 3Com Switch 7700R 8-slot
Gigabit Starter Kit, 3C16852, and 3Com Switch 7700 7-slot Gigabit
Starter Kit, 3C16850.
Network protocols supported: TCP/ IP, ARP/Proxy ARP, DHCP
Multicast protocol support: GARP/GVRP/GMRP, IGMP, PIM-DM/SM
IP routing: RIP (V1/V2), OSPF V2
Higher bandwidth and added reliability through link aggregation to
create virtual connections. Logical segmentation of the
supported by VLAN. Multiple overlapping tagged VLANs support
aggregated links and extension throughout the network
Improved network security and bandwidth availability with static
routes; default route is used to shorten time for route
Quality of Service (QoS) functions:
traffic classification, DiffServ service, IEEE 802.1p service,
traffic bandwidth limitation, and traffic bandwidth guarantee
System configuration: English CLI
through console port for local or remote Telnet or SNMP v3 access.
Plain ASCII text configuration files enable faster setup of
multiple similar systems. RMON and SMON support.
System maintenance: status indicators for the module and each
interface, hardware watchdog to protect against system software
failure, hierarchical user authority, operation log and online help
functions, alarm level management and alarm filtering functions,
query of system status. Debugging and tracing functions provide
real-time monitoring of system operational status
System test and diagnosis: power-on self-test and command test;
current status of system modules, cards, ports, chips and tasks;
query memory space, address table, packet buffer, flash memory
capacity, queue and current message number; supports loopback test
at different levels from card to port.
Software upgradability: multiple software upgrade modes via Switch
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