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12-27
Configuring for Network Management Applications
CDP
Monitoring and Managing
the Switch
Displaying CDP Neighbor Data. To display the superset of CDP neighbor
data held in the MIB, use the
walkmib command.
Syntax: walkmib <MIB-identifier>
For example, with two CDP devices connected to ports A1 and A3 on the
switch, you would see a
walkmib listing similar to this:
Figure 12-16. Example of CDP Neighbor Data in the Switch 4108GL MIB
For the current Switch 4108GL MIB, go to the
technical support area at http://
www.hp.com/go/hpprocurve
.
Operating Notes
Neighbor Maximum. The Switch 4108GL support up to 60 entries (neigh-
bors) in the CDP Neighbors table. Remember that multiple CDP devices can
be neighbors on the same port if they are connected to the switch through a
non-CDP device.
CDP Version Data. The Switch 4108GL use CDP-V1, but do not include IP
prefix information, which is a router function; not a switch application.
Port Trunking with CDP. Where a static or LACP trunk forms the link
between the switch and another CDP device, only one physical link in the
trunk is used to transmit outbound CDP packets.
The first number after the MIB string is the Switch 4108GL
port on which the data point for that entry was received. In
this case, the switch CDP packets on ports A1 and A3. (For
CDP purposes, port numbering is consecutive, from 1 to n,
where n is the last consecutive port on the switch.)
CDP MIB data is
grouped by type.
That is, the
Address Types
for all detected
CDP devices are
listed first, then
the IP
addresses of the
source devices,
and so on.