Perform this procedure to display and graph switch IP statistics.
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Step | Action |
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1 |
From the navigation tree, double-click Graph. |
2 |
In the Graph tree, double-click Chassis. |
3 |
In the work area, click the IP tab. |
4 |
On the toolbar, select a Poll Interval from the list. |
5 |
On the toolbar, you can click Clear Counters to reset the IP statistics counters. |
6 |
To select statistics to graph, click a statistic type row under a column heading. |
7 |
On the toolbar, click Line Chart, Area Chart, Bar Chart, or Pie Chart. |
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--End-- | |
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Use the data in the following table to help you understand IP statistics.
Variable | Value |
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InReceives | The total number of input datagrams received from interfaces, including those received in error. |
InHdrErrors | The number of input datagrams discarded due to errors in their IP headers, including bad checksums, version number mismatch, other format errors, time-to-live exceeded, errors discovered in processing their IP options. |
InAddrErrors | The number of input datagrams discarded because the IP address in the IP header destination field was not a valid address. This count includes invalid addresses (for example, 0.0.0.0) and addresses of unsupported Classes (for example, Class E). For addresses that are not IP Gateways and therefore do not forward datagrams, this counter includes datagrams discarded because the destination address was not a local address. |
ForwDatagrams | The number of input datagrams for which this entity was not their final IP destination, as a result of which an attempt was made to find a route to forward them to that final destination. For addresses that do not act as IP Gateways, this counter includes only those packets Source-Routed by way of this address with successful Source-Route option processing. |
InUnknownProtos | The number of locally addressed datagrams received successfully but discarded because of an unknown or unsupported protocol. |
InDiscards | The number of input IP datagrams for which no problems are encountered to prevent their continued processing, but that are discarded (for example, for lack of buffer space). This counter does not include any datagrams discarded while awaiting reassembly. |
InDelivers | The total number of input datagrams successfully delivered to IP user-protocols (including ICMP). |
OutRequests | The total number of IP datagrams that local IP user-protocols (including ICMP) supplied to IP in requests for transmission. This counter does not include any datagrams counted in ipForwDatagrams. |
OutDiscards | The number of output IP datagrams for which no problem was encountered to prevent their transmission to their destination, but that are discarded (for example, for lack of buffer space). This counter can include datagrams counted in ipForwDatagrams if any such packets met this (discretionary) discard criterion. |
OutNoRoutes | The number of IP datagrams discarded because no route can be found to transmit them to their destination. This counter also includes any packets counted in ipForwDatagrams that have no route. This includes any datagrams a host cannot route because all of its default gateways are down. |
FragOKs | The number of IP datagrams successfully fragmented at this entity. |
FragFails | The number of IP datagrams that are discarded because they need to be fragmented at this entity but cannot be, for example, because their Don’t Fragment flag was set. |
FragCreates | The number of generated IP datagram fragments because of a fragmentation at this entity. |
ReasmReqds | The number of IP fragments received that needed to be reassembled at this entity. |
ReasmOKs | The number of IP datagrams successfully reassembled. |
ReasmFails | The number of failures detected by the IP reassembly algorithm (for example, timed out, errors). This is not necessarily a count of discarded IP fragments because some algorithms (notably the algorithm in RFC815) can lose track of the number of fragments by combining them as they are received. |