From your saved ethereal output, include one packet from each of the different OSPF packet types that you have observed. (include only one packet from each type)
What will be an ideal response?
Depending on the time of capturing the packets, LS Request and DB Description packets can not be captured.
```
Frame 2 (78 on wire, 78 captured)
Arrival Time: Aug 6, 2003 15:39:18.225958
Time delta from previous packet: 0.000000 seconds
Time relative to first packet: 0.820000 seconds
Frame Number: 2
Packet Length: 78 bytes
Capture Length: 78 bytes
Ethernet II
Destination: 01:00:5e:00:00:05 (01:00:5e:00:00:05)
Source: 00:00:c0:58:28:00 (00:00:c0:58:28:00)
Type: IP (0x0800)
Internet Protocol, Src Addr: 10.0.1.2 (10.0.1.2), Dst Addr: 224.0.0.5 (224.0.0.5)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 64
Identification: 0x28f9
Flags: 0x00
.0.. = Don't fragment: Not set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 1
Protocol: OSPF (0x59)
Header checksum: 0xa565 (correct)
Source: 10.0.1.2 (10.0.1.2)
Destination: 224.0.0.5 (224.0.0.5)
Open Shortest Path First
OSPF Header
OSPF Version: 2
OSPF Packet Type: 1 (Hello Packet)
Packet Length: 44
Source OSPF Router ID: 0.0.0.0
Area ID: 0.0.0.1
Packet Checksum: 0xfc9d (correct)
Auth Type: Null
Auth Data (none)
OSPF Hello Packet
Network Mask: 255.255.255.0
Hello Interval: 10 seconds
Options: 0x2 (E)
Router Priority: 1
Router Dead Interval: 40 seconds
Designated Router: 0.0.0.0
Backup Designated Router: 0.0.0.0
Frame 25 (66 on wire, 66 captured)
Arrival Time: Aug 6, 2003 15:41:15.275958
Time delta from previous packet: 0.000000 seconds
Time relative to first packet: 117.870000 seconds
Frame Number: 25
Packet Length: 66 bytes
Capture Length: 66 bytes
Ethernet II
Destination: 00:00:c0:ba:4f:00 (00:00:c0:ba:4f:00)
Source: 00:00:c0:58:28:00 (00:00:c0:58:28:00)
Type: IP (0x0800)
Internet Protocol, Src Addr: 10.0.1.2 (10.0.1.2), Dst Addr: 10.0.1.1 (10.0.1.1)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 52
Identification: 0x6d65
Flags: 0x00
.0.. = Don't fragment: Not set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 1
Protocol: OSPF (0x59)
Header checksum: 0x360a (correct)
Source: 10.0.1.2 (10.0.1.2)
Destination: 10.0.1.1 (10.0.1.1)
Open Shortest Path First
OSPF Header
OSPF Version: 2
OSPF Packet Type: 2 (DB Descr.)
Packet Length: 32
Source OSPF Router ID: 10.0.1.2
Area ID: 0.0.0.1
Packet Checksum: 0x7bdd (correct)
Auth Type: Null
Auth Data (none)
OSPF DB Description
Interface MTU: 1500
Options: 0x2 (E)
Flags: 0x7 (MS/M/I)
DD Sequence: 1004483387
Frame 32 (142 on wire, 142 captured)
Arrival Time: Aug 6, 2003 15:41:15.275958
Time delta from previous packet: 0.000000 seconds
Time relative to first packet: 117.870000 seconds
Frame Number: 32
Packet Length: 142 bytes
Capture Length: 142 bytes
Ethernet II
Destination: 00:00:c0:58:28:00 (00:00:c0:58:28:00)
Source: 00:00:c0:ba:4f:00 (00:00:c0:ba:4f:00)
Type: IP (0x0800)
Internet Protocol, Src Addr: 10.0.1.1 (10.0.1.1), Dst Addr: 10.0.1.2 (10.0.1.2)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 128
Identification: 0x5453
Flags: 0x00
.0.. = Don't fragment: Not set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 1
Protocol: OSPF (0x59)
Header checksum: 0x4ed0 (correct)
Source: 10.0.1.1 (10.0.1.1)
Destination: 10.0.1.2 (10.0.1.2)
Open Shortest Path First
OSPF Header
OSPF Version: 2
OSPF Packet Type: 3 (LS Request)
Packet Length: 108
Source OSPF Router ID: 0.0.0.0
Area ID: 0.0.0.1
Packet Checksum: 0x2c3b (correct)
Auth Type: Null
Auth Data (none)
Link State Request
LS Type: Router-LSA (1)
Link State ID: 10.0.1.2
Advertising Router: 10.0.1.2
Link State Request
LS Type: Router-LSA (1)
Link State ID: 10.0.4.3
Advertising Router: 10.0.4.3
LS Type: Router-LSA (1)
Link State ID: 10.0.6.7
Advertising Router: 10.0.6.7
Link State Request
LS Type: Router-LSA (1)
Link State ID: 10.0.7.8
Advertising Router: 10.0.7.8
Link State Request
LS Type: Network-LSA (2)
Link State ID: 10.0.5.6
Advertising Router: 10.0.4.3
Link State Request
LS Type: Network-LSA (2)
Link State ID: 10.0.6.6
Advertising Router: 10.0.4.3
Link State Request
LS Type: Network-LSA (2)
Link State ID: 10.0.7.8
Advertising Router: 10.0.7.8
Frame 33 (94 on wire, 94 captured)
Arrival Time: Aug 6, 2003 15:41:15.275958
Time delta from previous packet: 0.000000 seconds
Time relative to first packet: 117.870000 seconds
Frame Number: 33
Packet Length: 94 bytes
Capture Length: 94 bytes
Ethernet II
Destination: 01:00:5e:00:00:05 (01:00:5e:00:00:05)
Source: 00:00:c0:58:28:00 (00:00:c0:58:28:00)
Type: IP (0x0800)
Internet Protocol, Src Addr: 10.0.1.2 (10.0.1.2), Dst Addr: 224.0.0.5 (224.0.0.5
)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 80
Identification: 0x2917
Flags: 0x00
.0.. = Don't fragment: Not set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 1
Protocol: OSPF (0x59)
Header checksum: 0xa537 (correct)
Source: 10.0.1.2 (10.0.1.2)
Destination: 224.0.0.5 (224.0.0.5)
Open Shortest Path First
OSPF Header
OSPF Version: 2
OSPF Packet Type: 4 (LS Update)
Packet Length: 60
Source OSPF Router ID: 10.0.1.2
Area ID: 0.0.0.1
Packet Checksum: 0x4667 (correct)
Auth Type: Null
Auth Data (none)
LS Update Packet
Number of LSAs: 1
Network LSA (Type: 2)
LS Age: 1 seconds
Options: 0x2 (E)
LSA Type: 2 (Network LSA)
Link State ID: 10.0.1.2
Advertising Router: 10.0.1.2
LS Sequence Number: 0x80000001
LS Checksum: 0a29
Length: 32
Netmask: 255.255.255.0
Attached Router: 0.0.0.0
Attached Router: 10.0.1.2
Frame 41 (78 on wire, 78 captured)
Arrival Time: Aug 6, 2003 15:41:23.785958
Time delta from previous packet: 0.270000 seconds
Time relative to first packet: 126.380000 seconds
Frame Number: 41
Packet Length: 78 bytes
Capture Length: 78 bytes
Ethernet II
Destination: 01:00:5e:00:00:05 (01:00:5e:00:00:05)
Source: 00:00:c0:58:28:00 (00:00:c0:58:28:00)
Type: IP (0x0800)
Internet Protocol, Src Addr: 10.0.1.2 (10.0.1.2), Dst Addr: 224.0.0.5 (224.0.0.5
)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 64
Identification: 0x291b
Flags: 0x00
.0.. = Don't fragment: Not set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 1
Protocol: OSPF (0x59)
Header checksum: 0xa543 (correct)
Source: 10.0.1.2 (10.0.1.2)
Link State Request
Destination: 224.0.0.5 (224.0.0.5)
Open Shortest Path First
OSPF Header
OSPF Version: 2
OSPF Packet Type: 5 (LS Acknowledge)
Packet Length: 44
Source OSPF Router ID: 10.0.1.2
Area ID: 0.0.0.1
Packet Checksum: 0x04ec (correct)
Auth Type: Null
Auth Data (none)
LSA Header
LS Age: 1 seconds
Options: 0x2 (E)
LSA Type: 1 (Router LSA)
Link State ID: 10.0.1.1
Advertising Router: 10.0.1.1
LS Sequence Number: 0x80000001
LS Checksum: 55aa
Length: 48
```
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