IP Routing
19-16
19
Displaying Statistics for IP Protocols
IP Statistics
The Internet Protocol (IP) provides a mechanism for transmitting blocks of data
(often called packets or frames) from a source to a destination, where these network
devices (i.e., hosts) are identified by fixed length addresses. The Internet Protocol
also provides for fragmentation and reassembly of long packets, if necessary, for
transmission through “small packet” networks.
Table 19-3 IP Statistics
Parameter
Description
Packets Received
The total number of input datagrams received from interfaces, including
those received in error.
Received Address Errors
The number of input datagrams discarded because the IP address in the
header's destination field was not a valid address for this entity.
Received Packets Discarded
The number of input datagrams for which no problems were encountered
to prevent their continued processing, but which were discarded (e.g., for
lack of buffer space).
Output Requests
The total number of datagrams which local IP user-protocols (including
ICMP) supplied to IP in requests for transmission.
Output Packet No Route
The number of datagrams discarded because no route could be found to
transmit them to their destination. Note that this includes any datagrams
which a host cannot route because all of its default gateways are down.
Datagrams Forwarded
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.
Reassembly Required
The number of IP fragments received which needed to be reassembled at
this entity.
Reassembly Failures
The number of failures detected by the IP re-assembly algorithm (for
whatever reason: timed out, errors, etc.).
Datagrams Failing
Fragmentation
The number of datagrams that have been discarded because they needed
to be fragmented at this entity but could not be, e.g., because their “Don't
Fragment” flag was set.
Received Header Errors
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, etc.
Unknown Protocols Received
The number of locally-addressed datagrams received successfully but
discarded because of an unknown or unsupported protocol.
Received Packets Delivered
The total number of input datagrams successfully delivered to IP
user-protocols (including ICMP).
Discarded Output Packets
The number of output IP datagrams for which no problem was
encountered to prevent their transmission to their destination, but which
were discarded (e.g., for lack of buffer space).
Fragments Created
The number of datagram fragments that have been generated as a result
of fragmentation at this entity.
Summary of Contents for 8926EM
Page 6: ...ii ...
Page 34: ...Getting Started ...
Page 44: ...Introduction 1 10 1 ...
Page 62: ...Initial Configuration 2 18 2 ...
Page 64: ...Switch Management ...
Page 76: ...Configuring the Switch 3 12 3 ...
Page 118: ...Basic Management Tasks 4 42 4 ...
Page 164: ...User Authentication 6 28 6 ...
Page 176: ...Access Control Lists 7 12 7 ...
Page 284: ...Quality of Service 14 8 14 ...
Page 294: ...Multicast Filtering 15 10 15 ...
Page 300: ...Domain Name Service 16 6 16 ...
Page 310: ...Dynamic Host Configuration Protocol 17 10 17 ...
Page 320: ...Configuring Router Redundancy 18 10 18 ...
Page 344: ...IP Routing 19 24 19 ...
Page 356: ...Unicast Routing 20 12 20 Web Click Routing Protocol RIP Statistics Figure 20 5 RIP Statistics ...
Page 386: ...Unicast Routing 20 42 20 ...
Page 388: ...Command Line Interface ...
Page 400: ...Overview of the Command Line Interface 21 12 21 ...
Page 466: ...SNMP Commands 24 16 24 ...
Page 520: ...Access Control List Commands 26 18 26 ...
Page 546: ...Rate Limit Commands 30 2 30 ...
Page 612: ...VLAN Commands 34 24 34 ...
Page 626: ...Class of Service Commands 35 14 35 ...
Page 670: ...DHCP Commands 39 16 39 ...
Page 716: ...IP Interface Commands 41 36 41 ...
Page 768: ...IP Routing Commands 42 52 42 ...
Page 770: ...Appendices ...
Page 791: ......