Use the captured data of a single RIP packet and explain the fields in a RIP message.

Question

What will be an ideal response?

Answer 1

Routing Information Protocol (RIP) uses UDP for packet transmission. And port number 520
is used. In this experiment, RIP version 2 is used. Here is a captured RIP packet:
Frame 1 (106 bytes on wire, 106 bytes captured)
Arrival Time: Aug 5, 2003 13:31:10.670908000
Time delta from previous packet: 0.000000000 seconds
Time relative to first packet: 0.000000000 seconds
Frame Number: 1
Packet Length: 106 bytes
Capture Length: 106 bytes
Ethernet II, Src: 00:0a:b7:c2:3a:00, Dst: 01:00:5e:00:00:09
Destination: 01:00:5e:00:00:09 (01:00:5e:00:00:09)
Source: 00:0a:b7:c2:3a:00 (Cisco_c2:3a:00)
Type: IP (0x0800)
Internet Protocol, Src Addr: 10.0.1.1 (10.0.1.1), Dst Addr: 224.0.0.9 (224.0.0.9)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0xc0 (DSCP 0x30: Class Selector 6; ECN: 0x00)
1100 00.. = Differentiated Services Codepoint: Class Selector 6 (0x30)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 92
Identification: 0x0000 (0)
Flags: 0x00
.0.. = Don't fragment: Not set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 2
Protocol: UDP (0x11)
Header checksum: 0xccc7 (correct)
Source: 10.0.1.1 (10.0.1.1)
Destination: 224.0.0.9 (224.0.0.9)
User Datagram Protocol, Src Port: router (520) , Dst Port: router (520)
Source port: router (520)
Destination port: router (520)
Length: 72
Checksum: 0xea32 (correct)
Routing Information Protocol

5

Command: Response (2)
Version: RIPv2 (2)
Routing Domain: 0
IP Address: 10.0.2.0, Metric: 1
Address Family: IP (2)
Route Tag: 0
IP Address: 10.0.2.0 (10.0.2.0)
Netmask: 255.255.255.0 (255.255.255.0)
Next Hop: 0.0.0.0 (0.0.0.0)
Metric: 1
IP Address: 10.0.3.0, Metric: 2
Address Family: IP (2)
Route Tag: 0
IP Address: 10.0.3.0 (10.0.3.0)
Netmask: 255.255.255.0 (255.255.255.0)
Next Hop: 0.0.0.0 (0.0.0.0)
Metric: 2
IP Address: 10.0.4.0, Metric: 3
Address Family: IP (2)
Route Tag: 0
IP Address: 10.0.4.0 (10.0.4.0)
Netmask: 255.255.255.0 (255.255.255.0)
Next Hop: 0.0.0.0 (0.0.0.0)
Metric: 3