Cisco ONS 15454 SDH Specifications Page 396

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9-50
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 9 Ethernet Operation
G1000-4 Performance and Maintenance Screens
9.8.3.2 Line Utilization Window
The Line Utilization window shows the percentage of line, or port, bandwidth used and the percentage
used in the past. Display the CTC card view and click the Performance and Utilization tabs to display
the screen. From the Interval menu, choose a time segment interval. Valid intervals are 1 minute, 15
minutes, 1 hour, and 1 day. Press Refresh to update the data.
9.8.3.3 E Series Utilization Formula
Line utilization is calculated with the following formula:
((inOctets + outOctets) + (inPkts + outPkts) * 20)) * 8/100%interval * maxBaseRate * 2.
The interval is defined in seconds. maxBaseRate is defined by raw bits/second in one direction for the
Ethernet port (i.e. 1 Gbps). maxBaseRate is multiplied by 2 in the denominator to determine the raw bit
rate in both directions.
Note Line utilization numbers express the average of ingress and egress traffic as a percentage of capacity.
9.8.3.4 History Window
The Ethernet History screen lists past Ethernet statistics. At the CTC card view, click the Performance
tab and History subtab to view the screen. Choose the appropriate port from the Line menu and the
appropriate interval from the Interval menu. Press Refresh to update the data. Table 9-13 defines the
listed parameters.
9.8.4 E-Series Ethernet Maintenance Screen
Display an E-series Ethernet card in CTC card view and choose the Maintenance tab to display MAC
address and bandwidth information.
9.8.4.1 MAC Table Window
A MAC address is a hardware address that physically identifies a network device. The ONS 15454 SDH
MAC table, also known as the MAC forwarding table, will allow you to see all the MAC addresses
attached to the enabled ports of an E series Ethernet card or an E series Ethernet Group. This includes
the MAC address of the network device attached directly to the port and any MAC addresses on the
network linked to the port. The MAC addresses table lists the MAC addresses stored by the ONS 15454
SDH and the VLAN, Slot/Port/STM, and circuit that links the ONS 15454 SDH to each MAC address
(Figure 9-38).
Table 9-14 maxBaseRate for STM circuits
VC4 155000000
VC4-2c 311000000
VC4-4c 622000000
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