User manual SMC 6709FL2 INT

[. . . ] TigerSwitch 10/100 9-Port Fast Ethernet Switch 8 10BASE-T/100BASE-TX ports, 1 100BASE-FX MMF port 1. 8 Gbps aggregate bandwidth Spanning Tree Protocol Port mirroring for non-intrusive analysis QoS support with two priority queues Full support for VLANs with GVRP IP multicasting with IGMP snooping Security filtering based on MAC addresses Manageable via console, Web, SNMP/RMON Management Guide SMC6709FL2 TigerSwitch 10/100 Management Guide From SMC's Tiger line of feature-rich workgroup LAN solutions 38 Tesla Irvine, CA 92618 Phone: (949) 679-8000 February 2004 Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable. However, no responsibility is assumed by SMC for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SMC. [. . . ] If there is no root port, then this switch has been accepted as the root device of the Spanning Tree network. See the preceding page for a description of the other fields. Web ­ Click Administrator=>Spanning Tree. Configuring Port STP Settings You can configure STA attributes for specific ports, including port priority and path cost. You can use a different priority or path cost for ports of the same media type to indicate the preferred path. 3-36 SPANNING TREE PROTOCOL CONFIGURATION Field Attributes · Priority ­ Defines the priority used for this port in the Spanning Tree Protocol. If the path cost for all ports on a switch are the same, the port with the highest priority (i. e. , lowest value) will be configured as an active link in the Spanning Tree. This makes a port with higher priority less likely to be blocked if the Spanning Tree Protocol is detecting network loops. Where more than one port is assigned the highest priority, the port with lowest numeric identifier will be enabled. - Default: 128 - Range: 0 - 255 · Path Cost ­ This parameter is used by STP to determine the best path between devices. Therefore, lower values should be assigned to ports attached to faster media, and higher values assigned to ports with slower media. (Path cost takes precedence over port priority. ) · Full Range: 1-65535 · Recommended Range ­ - Ethernet: 50-600 - Fast Ethernet: 10-60 - Gigabit Ethernet: 3-10 · Defaults ­ - Ethernet ­ half duplex: 100; full duplex: 95; trunk: 90 - Fast Ethernet ­ half duplex: 19; full duplex: 18; trunk: 15 - Gigabit Ethernet ­ full duplex: 4 Web ­ Click Administrator=>Spanning Tree. Modify the required attributes, then click Apply. 3-37 CONFIGURING THE SWITCH Displaying Port Status for STP You can display the current STP settings and state for each port. Field Attributes · Port State ­ Displays the current state of this port in the Spanning Tree: - Disabled - No link has been established on this port. Otherwise, the port has been disabled by the user or has failed diagnostics. - Blocking - Port receives STP configuration messages, but does not forward packets. - Listening - Port will leave blocking state due to a topology change, start transmitting configuration messages, but will not yet forward packets. - Learning - Port has transmitted configuration messages for an interval set by the Forward Delay parameter without receiving contradictory information. Port address table is cleared, and the port begins learning addresses. - Forwarding - Port forwards packets, and continues learning addresses. - Broken - Port is malfunctioning or no link has been established. See the preceding page for a description of the other fields. Web ­ Click Administrator=>Spanning Tree. 3-38 PORT MIRRORING Port Mirroring You can mirror traffic from any source port to a target port for real-time analysis. You can then attach a logic analyzer or RMON probe to the target port and study the traffic crossing the source port in a completely unobtrusive manner. [. . . ] · If you are trying to connect to the agent via a tagged VLAN group, your management station must include the appropriate tag in its transmitted frames. · Check that you have a valid network connection to the switch and that the port you are using has not been disabled. · Check network cabling between the management station and the switch. · If you cannot connect using Telnet, there may already be four active sessions. [. . . ]