cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
2959
Views
0
Helpful
1
Replies

routing on P2P connection

Deepak Khemani
Level 1
Level 1

Hi All

I have P2P connection with serial interface

Router A IP address 172.16.1.65. 255.255.255.252

Router B IP address  172.16.1.66 255.255.255.252

when I check routing table wih sjh ip route on router A

its show Router B IP address as directlu connected

C       172.16.1.64/30 is directly connected, Serial0/3

C       172.16.1.66/32 is directly connected, Serial0/3   Router B IP address.

interface Serial0/3

bandwidth 2048

ip address 172.16.1.65 255.255.255.252

no ip redirects

no ip unreachables

no ip proxy-arp

encapsulation ppp

ip route-cache flow

end

and when I traceroue to 172.16.1.65 first hop is 172.16.1.66.

How to rectify

Please help.

Thanks

1 Reply 1

cadet alain
VIP Alumni
VIP Alumni

Hi,

PPP advertises the IP address of the peer as a directly connected  /32  due to peer neighbour-route feature that enables peers to have IPs on different subnets.

So if you want to get rid of this /32 you must enter this in interface config:

no peer neighbour-route (on each side)

or change encapsulation to hdlc with the interface config command no encapsulation ppp

Concerning the communication with your own IP on a serial link( whether it is ppp or hdlc) ,what you observe is normal and can't be changed.When communicating with your IP the packet is sent on the link, goes to peer which sends it back to you.

Regards

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Innovations in Cisco Full Stack Observability - A new webinar from Cisco