I'm working with GNS3 and PPP encapsulation I put the simple example the PPP encapsulation.
This is the desing of the network
This is the basic configuration is:
So when I try to capture the information with Wireshark I get the following information.
This is the specifications of my platform:
Running the command wireshark -v
I can see nothing. Someone could tell me why does this happen and how to fix it?
According with this: http://wiki.wireshark.org/CaptureSetup/PPP, it’s possible but I don’t kwow how.
asked 08 Jun ‘14, 07:53
edited 08 Jun ‘14, 18:42
Guy Harris ♦♦
Your problem is that you're using GNS3's default L2 protocol for packet captures (HDLC) instead of specifying PPP. When you right-click to "Start Capture" on an interface in GNS3, click the drop-down and specify PPP specifically.
Wireshark needs to be given a context (what L2 protocol is in use) in order to know how to decode the packets correctly. GNS3 doesn't know what L2 protocol you're going to configure on that router's serial interface, so it default to HDLC and gives you the option to specify the L2 encapsulation to use.
answered 08 Jun '14, 18:19
edited 08 Jun '14, 18:27