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cdpd - Views the neighbors of the storage controller that
are discovered using Cisco Discovery Protocol(CDP) v1 and
cdpd show-neighbors [ -v ]
The cdpd command displays information of the devices that
advertise themselves via the CDPv1 protocol. Such devices
are referred to as CDP neighbors of the storage controller
on this page.
The cdpd command also displays CDP daemon statistics.
The cdpd command is available only if cdpd is enabled by
setting the option cdpd.enable to ON.
Using the cdpd show-neighbors command, you can view the
summary or verbose information about the storage
controller's CDP neighbors. CDP neighbors are discovered
by the storage controller using the CDP version 1
Using the cdpd show-stats command, you can view the
receive and transmit statistics of CDP advertisements.
Using the cdpd zero-stats command, you can zero out the
receive and transmit statistics displayed by the cdpd
- prints a summary of CDP neighbor
information. Use the -v sub-option to
print additional information about the
platform version and IP addresses of
the remote device.
- prints the receive and transmit
statistics of the CDPv1 daemon. This
information is useful when looking for
errors or failures reported by the CDP
The summary neighbor statistics displayed with the
show-neighbors option lists a number of columns. These are
- allows the zeroing of statistics
printed so far by the show-stats
The column labeled "Local Port" displays the name of the
local network port receiving the CDP advertisement.
The column labeled "Remote Device" displays the name of
the remote device as received in the CDP advertisement.
The column labeled "Remote Interface" displays the name of
the remote network port sending the CDP advertisement.
The column labeled "Remote Platform" displays the platform
ID as received in the CDP advertisement.
The column labeled "Hold Time" displays the time for which
the CDP advertisement is cached locally. This value is
sent by the remote device in its CDP advertisement.
The column labeled "Remote Capability" describes the
capabilities of the remote device. The possible
capabilities that may be displayed are "R" for "Router",
"T" for "Transparent Bridge", "B" for "Source Route
Bridge", "S" for "Switch", "H" for "Host", "I" for "IGMP
report forwarder", "r" for "Repeater" and "P" for "Phone".
CDP is an L2 protocol and the information displayed is
related to the properties of the physical node and its
network ports. During a takeover, only the information
about the local node is advertised by the storage
CDP is completely unaware of vfilers and/or IP spaces that
may exist on the storage controller system. It is
therefore possible that a CDP advertisement from a
particular physical port will contain IP addresses
belonging to multiple vfilers if those vfiler IP addresses
are configured on that physical port, or on a ifgrp or
vlan above the physical port.
Similarly VLANs on the same physical port may be
configured in several different IP spaces. In this case,
CDP advertisements sent by the underlying physical port
may contain IP addresses belonging to different IP spaces.
Only the CDP version 1 neighbor capabilities can be
viewed. CDP version 1 advertisements are sent out only on
interfaces that are configured with IPv4 addresses.
The cdpd show-stats command is useful for diagnosing
network level connectivity if the cdpd show-neighbors
command does not display the expected set of CDP compliant
CDPv1 is a proprietary Cisco protocol. The storage
controller advertises its capabilities using the CDPv1
protocol on each of its physical ports. Therefore, the
storage controller system can be discovered by other CDP
compliant devices in the network. Conversely, the storage
controller system learns about CDP compliant devices on
the network by processing the CDPv1 advertisements that it
receives from its neighbors.
The options cdpd.holdtime command can be used to alter the
holdtime value advertised by the storage controller via
the CDPv1 protocol.
The options cdpd.interval command can be used to alter the
interval at which CDPv1 advertisements are sent by the
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