Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Community Member

PDMs in EIGRP?

I have a couple of questions about EIGRP and especially about PDMs? How PDMs are used when using EIGRP? What's their purpose? How PDMs work?

Any additional information given except for what is in CCNA3 will be appreciated

3 REPLIES

Re: PDMs in EIGRP?

PDM is protocol dependent module: EIGRP use PDM for IP, IPX and Apple talk protocols... IPX EIGRP module used to exchanging the routing information about the IPX network with other IPX EIGRP process and passing the information to DUAL... meas you can have the muliple protcol support in the EIGRP...it means EIGRP can support the IP, IPX as well as the Apple Talk protocols...

rate this post if it helps

regards

Devang

Community Member

Re: PDMs in EIGRP?

Thanks.

I was looking more thoroughly about it but thanks though.

Re: PDMs in EIGRP?

here something more about PDM:The successors in the DUAL topology table are eligible for installation in the routing table. Successors represent the best path to the destination known to DUAL. However, whether the successor is copied into the routing table is another matter. The router may be aware of a route to the same destination from another source (such as another routing protocol or via a static route) with a lower distance. The IP protocol-dependent module (PDM) handles this task. The PDM may also carry information in the reverse direction--from the routing table to the topology table. This will occur if routes are being redistributed into EIGRP from another protocol.

The PDM is also responsible for encapsulating EIGRP messages in IP packets

remember to rate the post if it helps

regards

Devang

2081
Views
0
Helpful
3
Replies
CreatePlease to create content