#import "template/module.typ": *

#show: default.with(
  title: "SDN - Lab 2",
  authors: ((
    name: "Yi-Ting Shih (111550013)",
    affiliation: "National Yang Ming Chaio Tung University",
    email: "ytshih@cs.nycu.edu.tw",
  ),),
)

= Part 1: Answer Questions

1. How many distinct OpenFlow headers with type "OFPT_FLOW_MOD" and command "OFPFC_ADD" are there among all the packets?

There are 6 distinct OpenFlow headers.

2. Following question 1, what are the match fields, and what are the corresponding actions?

#table(columns: 3,
  [Match fields], [actions], [Timeout values],
  [ETH_TYPE=LLDP], [output port=controller], [0],
  [ETH_TYPE=ARP], [output port=controller], [0],
  [ETH_TYPE=BDDP], [output port=controller], [0],
  [ETH_TYPE=IPv4], [output port=controller], [0],
  [IN_PORT=1, ETH_DST=0a:01:ca:16:e6:f2, ETH_SRC=16:e8:32:bf:62:44], [output port=2], [0], 
  [IN_PORT=2, ETH_DST=16:e8:32:bf:62:44, ETH_SRC=0a:01:ca:16:e6:f2], [output port=1], [0], 
)

3. What are the Idle Timeout values for all flow rules on s1 in the GUI?

10

= Part 2: Install Flow Rules

> arping
#image("part2-1.png", width: 350pt)

> ping
#image("part2-2.png", width: 350pt)

= Part 3: Trace ReactiveForwarding

[C] - Control Plane
[D] - Data Plane

- [D] h1 send ARP request with broadcast.
- [C] s1 sends the ARP request with packet-in to ONOS controller.
- [C] Controller choose to flood the ARP request and send packet-out.
- [D] s1 floods the ARP request.
- [D] h2 replies h1 with ARP reply.
- [C] s1 sends the ARP request with packet-in to ONOS controller.
- [C] Controller choose to send the ARP reply to h1 and send packet-out.
- [D] s1 sends the ARP reply to h1.
- [D] h1 sends ICMP echo request to h2.
- [C] s1 sends ICMP echo request with packet-in to ONOS controller.
- [C] Controller install rules for ICMP traffic.
- [D] s1 forwards the ICMP packet to h2.