12-14
Configuring for Network Management Applications
CDP
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Figure 12-5. Example of How the Switch Stores Data on Neighbor CDP Devices
Outgoing Packets
A Switch 4108GL running CDP periodically transmits a one-hop CDP packet
out each of its ports. This packet contains data describing the switch and, if
the one-hop destination is another device running CDP, the receiving device
stores the sending device’s data in a CDP Neighbors table. The receiving device
also transmits a similar one-hop CDP packet out each of its ports to make itself
known to other CDP devices to which it is connected. Thus, each CDP device
in the network provides data on itself to the CDP neighbors to which it is
directly connected. However, there are instances where a packet is forwarded
beyond the immediate neighbor, or simply dropped.
Switch "A"
with CDP Running
•
The Neighbors table in switches "A", "B", and "D"
contain information on switch "C" only because
it is the only neighbor for these switches.
•
The Neighbors table in switch "C" contains
information on switches "A", "B", and "D"
because all of these switches are neighbors of
switch "C".
Note:
A given switch’s CDP Neighbor table
includes data only on neighbor CDP devices, but
not on that switch itself.
CDP Neighbor Table
Switch "C" data
Switch "B"
with CDP Running
CDP Neighbor Table
Switch "C" data
Switch "C"
with CDP Running
CDP Neighbor Table
Switch "A" data
Switch "B" data
Switch "D" data
Switch "D"
with CDP Running
CDP Neighbor Table
Switch "C" data
Summary of Contents for ProCurve 4108gl Bundle
Page 1: ...hp procurve switch 4108gl management and configuration guide www hp com go hpprocurve ...
Page 2: ......
Page 40: ...2 16 Using the Menu Interface Where To Go From Here Using the Menu Interface ...
Page 154: ...8 24 Time Protocols SNTP Messages in the Event Log Time Protocols ...
Page 350: ...14 44 Port Based Virtual LANs VLANs and GVRP GVRP Port Based Virtual LANs VLANs and GVRP ...
Page 383: ...16 13 Spanning Tree Protocol STP How STP Operates Spanning Tree Protocol STP ...
Page 384: ...16 14 Spanning Tree Protocol STP How STP Operates Spanning Tree Protocol STP ...
Page 442: ...18 30 Troubleshooting Restoring a Flash Image Troubleshooting ...
Page 466: ...B 6 MAC Address Management Determining MAC Addresses MAC Address Management ...
Page 470: ......
Page 481: ...Index 11 Index write memory effect on menu interface 2 13 X Xmodem OS download A 6 ...
Page 482: ......