each Ethernet port is an interface and so is the IP Agent being used formanaging it (which is also referred to as the Management Interface).v The value returned for ifNumber in the MIB-II Interface table does notinclude the Management Interface (that is, the value of ifNumber onlyreflects the number of ports in the switch). If there are 32 ports, ifNumberwill incorrectly be 32 instead of being 33.v Port ifIndex Values - The ifIndex values for the 8275-416 ports start with1 and increment by 1 for each port physically in the box. Each ifIndexvalue maps, one for one, with an Ethernet port.v Example scenarios:– if there are 32 ports (16 base ports, 8 ports in slot 1, 8 ports in slot 2)- ifIndex 1 is slot 0, port1- ifIndex 9 is slot 0, port 9- ifIndex 17 is slot 1, port 1- ifIndex 25 is slot 2, port 1– if there are 24 ports (16 base ports, 8 ports in slot 2)- ifIndex 1 is slot 0, port1- ifIndex 9 is slot 0, port 9- ifIndex 17 is slot 2, port 1The Management Interface always has an ifIndex of 1000.Port MAC AddressEach port is automatically configured with a burned-in MAC address. Thisaddress is used as the source address of spanning tree frames and may beused in 802.3x PAUSE frames for the 8275-416 .Configuring Port MonitoringAny of the Ethernet ports can be selected as a probe to monitor forwarded traffic(not local traffic) with an external network analyzer. The selected probe port canmonitor (mirror) traffic from one port.From the Main Menu, select Device Configuration Menu. Then, select PortMonitoring Menu from the Device Configuration Menu. (See Figure 31 onpage 46.)Chapter 4. Using the Terminal Interface 45
