1. Software implementation of the Signaling protocol Cusnir Pablo & Schetrit Guy. Supervisor: Dan Gluskin. December 2000 Spring 2000 Mid semester presentation

2. Talk Outline Project’s Goal. Very short introduction to Signaling Protocol. Problems & Solutions. Ways of action.

3. Motivation MPLS - technology that enables creation of label switching VCs. Router’s forwarding tables should be configured. Signaling protocols – used for this configuration.

4. Project’s Goal Test current signaling implementation - UDP. Implementation of the Signaling protocol + a daemon for testing it, using ‘raw socket’. Platform used - Linux RedHat 6.2.

5. Example of Unicast Operation 1 5 2 3 8 7 6 4 setup (s1) Time Initiating NICIntermediate NICDestination NIC setup (i2) i1: ack d1: ack i1: ack s1: setup-ack(i1) i2: setup-ack(d1) i2: connect s1: connect

6. The Intra-net Goa Pushkar Delhi Agra Subnet A Subnet B Subnet C InternetInternet

7. Block Diagram Interface In FSMs Interface Out OS NIC

8. Ways of action The application that runs as a daemon is capable of: 2.Open & maintain a raw socket connection. 1.Listen to the NICs on the machine. 3.Monitor & log ‘Live Connections’.

9. Problems & Solutions. P. How can we use an undefined protocol? P. How can I distinguish between packets’ source? S. Use raw sockets and define your own Proto. S. Pay attention to the type and not the NIC. P. Configure Linux as a router & still process packets S. Use the Router Alert Option in the IP header.

10. Thanks