configuration PDP Directory

This chapter will introduce how to configure PDP of a router.

PDP is a two-layer protocol specially for detecting network equipments, is used to discover all neighbors of a known equipment in network management program. Users can know type and agent address of SNMP of neighbor equipment through using PDP. The network management program can query the neighboring devices for information about the topology services by SNMP. 

Though the PDP of D-Link Routers can discover the neighboring devices , it can not Use SNMP to query neighboring devices. So, D-Link can only be the edge of network, or ,it will not get the full network topology.

PDP on a router can configure to all SANP (such as Ethernet, HDLC, frame relay,PPP).

Default PDP configuration on a router

Set PDP clock and holdtime

Enable PDP on a router

Enable PDP on a router’s interface

Monitor and manage PDP

Examples of PDP configuration

 

Default PDP configuration on a router

function

default

PDP overall configuration mode

down

PDP interface configuration mode

down

PDPclocktransmit frequency

60 seconds

PDP hold time

180 seconds

 

Set PDP clock and holdtime

Users can use following commands to set PDP transmit frequency and holdtime in overall configuration mode:

step

command

purpose

1

pdp timer seconds

Set PDP transmit frequency

2

pdp holdtime seconds

Set PDP holdtime

 

Enable PDP on a router

If in default ,PDP is down, user can start PDP through using following command in overall configuration mode:

Command

Purpose

pdp run

Start PDP on a router

 

Enable PDP on a router’s interface

If in default, PDP is down, after starting PDP on a router, users can use following commands to start PDP in interface configuration mode:

command

purpose

pdp enable

start PDP on a router’s interface

Monitor and manage PDP

Users can use following commands to monitor PDP:

command

purpose

show pdp traffic

display the count of PDP tansmitted and received by the Router

show pdp neighbor [detail]

Display neighbors of the router discovered by PDP

 

Examples of PDP configuration

enablel PDP:

Router_config# pdp run

Router_config# int f0/0

Router_config_f0/0#pdp enable

set PDP clock and holdtime

Router_config# pdp timer 30

Router_config# pdp holdtime 90

monitor PDP information :

router# show pdp neighbors

Capability Codes:R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H -

Host, I - IGMP, r - Repeater

Device ID Local IntrfceHoldtmeCapabilityPlatform Port ID

joeEth 0 133 4500 Eth 0

samEth 0 152 R AS5200 Eth 0