Edge-Core ES3510MA, Руководство по управлению

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C
HAPTER
16
| IP Configuration
Setting the Switch’s IP Address (IP Version 6)
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S
HOWING
IP
V
6
S
TATISTICS
Use the IP > IPv6 Configuration (Show Statistics) page to display statistics
about IPv6 traffic passing through this switch.
CLI R
EFERENCES
◆
"show ipv6 traffic" on page 937
C
OMMAND
U
SAGE
This switch provides statistics for the following traffic types:
◆
IPv6 – The Internet Protocol for Version 6 addresses provides a
mechanism for transmitting blocks of data (often called packets or
frames) from a source to a destination, where these network devices
(that is, 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.
◆
ICMPv6 – Internet Control Message Protocol for Version 6 addresses is
a network layer protocol that transmits message packets to report
errors in processing IPv6 packets. ICMP is therefore an integral part of
the Internet Protocol. ICMP messages may be used to report various
situations, such as when a datagram cannot reach its destination, when
the gateway does not have the buffering capacity to forward a
datagram, and when the gateway can direct the host to send traffic on
a shorter route. ICMP is also used by routers to feed back information
about more suitable routes (that is, the next hop router) to use for a
specific destination.
◆
UDP – User Datagram Protocol provides a datagram mode of packet
switched communications. It uses IP as the underlying transport
mechanism, providing access to IP-like services. UDP packets are
delivered just like IP packets – connection-less datagrams that may be
discarded before reaching their targets. UDP is useful when TCP would
be too complex, too slow, or just unnecessary.
P
ARAMETERS
These parameters are displayed:
Table 30: Show IPv6 Statistics - display description
Field Description
IPv6 Statistics
IPv6 Received
Total The total number of input datagrams received by the interface,
including those received in error.
Header Errors The number of input datagrams discarded due to errors in their
IPv6 headers, including version number mismatch, other format
errors, hop count exceeded, IPv6 options, etc.
Too Big Errors The number of input datagrams that could not be forwarded
because their size exceeded the link MTU of outgoing interface.
No Routes The number of input datagrams discarded because no route could
be found to transmit them to their destination.