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Linksys
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Link Local—The IPv6 address uniquely identifies hosts on a single network
link . A link local address has a prefix of FE80, is not routable, and can be
used for communication only on the local network . Only one link local
address is supported . If a link local address exists on the interface, this
entry replaces the address in the configuration .
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Global—The IPv6 address is a global Unicast IPV6 type that is visible and
reachable from other networks .
Interface—If the IPv6 address type is Link Local, select from where it is
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received .
Target IP Address—Address of the device to be pinged . Whether this is an
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IP address or host name depends on the Host Definition .
Target Name—Host name of the device to be pinged . Whether this is an IP
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address or host name depends on the Host Definition .
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Ping Interval—Length of time the system waits between ping packets .
Ping is repeated the number of times configured in the Number of Pings
field, whether the ping succeeds or not . Choose to use the default interval
or specify your own value .
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Number of Pings—The number of times the ping operation is performed .
Choose to use the default or specify your own value .
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STEP 3 Click Start to ping the host . The ping status appears and another
message is added to the list of messages, indicating the result of the
ping operation .
STEP 4 View the results of ping in the Ping Result section of the page:
Result—Success or fail of ping .
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Number of Pings Sent—Numbers of responses sent .
Number of Ping Responses Received—Numbers of responses received .
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Packets Lost—Numbers of responses not received
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Minimum Round Trip Time—Minimum time passed between sending of
packets and reception of responses .
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Maximum Round Trip Time—Maximum time passed between sending of
packets and reception of responses
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Average Round Trip Time—Average time passed between sending of
packets and reception of responses .
Port Mirroring
Port mirroring is used on a network device to send a copy of network packets
seen on one or multiple device ports, to a network monitoring connection
on another port on the device . This is commonly used for network appliances
that require monitoring of network traffic, such as an intrusion-detection
system . A network analyzer connected to the monitoring port processes the
data packets for diagnosing, debugging, and performance monitoring . Up to
four sources can be mirrored . This can be any combination of four individual
ports . Up to four sources can be mirrored .
A packet that is received on a network port assigned to a VLAN that is subject
to mirroring is mirrored to the analyzer port even if the packet was eventually
trapped or discarded . Packets sent by the device are mirrored when Transmit
(Tx) mirroring is activated .
Mirroring does not guarantee that all traffic from the source port(s) is received
on the analyzer (destination) port . If more data is sent to the analyzer port
than it can support, some data might be lost .
Only one instance of mirroring is supported system-wide . The analyzer port is
the same for all the mirrored ports .
To enable mirroring, do the following:
STEP 1 Click Maintenance > Diagnostics > Port Mirroring .
The following fields are displayed:
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Destination Port—Port to which traffic is to be copied; the analyzer port .
Source Port—Interface, port, or VLAN from which traffic is sent to the
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analyzer port .
Mirror Type—Type of monitoring: incoming to the port (Rx), outgoing
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from the port (Tx), or both .
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Status— Displays one of the following values:
Active—Both source and destination interfaces are up and forwarding
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traffic .
Not Ready—Either source or destination (or both) are down or not
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forwarding traffic for some reason .
STEP 2 Click Add to add a port to be mirrored .
STEP 3 Enter the parameters:
Chapter 14 Maintenance
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