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Installation and wiring of telephones and power supplies
Issue 9.1 June 2006 377
● Up to 20 redundant-port pairs are supported to increase link resiliency.
● Inter-module redundancy is supported with one pair in a stack. The switching time is
approximately 1 second.
● Link Aggregation Group (LAG) support of up to 7 trunks, with each trunk having up to 8 10/
100 links or 2 GB links, provides resiliency, load balancing, and bandwidth expansion.
● LAG redundancy is supported through resiliency between two LAG groups.
● Port mirroring of any switch port is supported.
● RMON/SMON port statistics provide real-time top-down analysis of network traffic.
● IP multicast filtering (snooping) filters multicast traffic to optimize network bandwidth.
● Classification of ports as regular or valuable is supported so that if a link fails, notification is
generated for valuable ports only.
● The L2 CAM table contains 16K MAC addresses.
Layer 3 features
Note:
Note: An additional license is required for Layer 3 features.
● Static, RIPv1, RIPv2, OSPF IP routing protocols are supported.
● Equal cost routing is used for load balancing and redundancy.
● Router redundancy (VRRP) is supported.
● NetBIOS rebroadcasting is available for applications such as WINS that use broadcasting
but may need to also communicate with stations on other subnets or VLANs.
● ICMP and ARP protocols are supported.
● DHCP/BootP relay allows broadcast requests to be forwarded to servers.
● Policy-based routing of packets provides enforcement of QoS and ACL rules.
● The L3 CAM table contains 4K IP addresses.
Management
● Access to the management interfaces are password-protected at three levels (read-only,
read-write access and supervisor) to prevent unauthorized configuration changes.
● You can access to the Command Line Interface (CLI) in the following ways:
- Direct console or modem connection
- Telnet (up to five simultaneous connections) or SSHv2 (up to two simultaneous
connections) over the IP network
● You can use TFTP for the download/upload of configuration files or the download of
firmware files