A sample Diameter Base Capability Exchange Answer (CEA) response wireshark capture trace which may be helpful to Diameter Base protocol beginners.Diameter Protocol
Version: 0x01
Length: 176
Flags: 0x00
0... .... = Request: Not set
.0.. .... = Proxyable: Not set
..0. .... = Error: Not set
...0 .... = T(Potentially re-transmitted message): Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
Command Code: 257 Capabilities-Exchange
ApplicationId: Diameter Common Messages (0)
Hop-by-Hop Identifier: 0x00002510
End-to-End Identifier: 0x00002510
AVP: Origin-Host(264) l=23 f=-M- val=shareoliteserve
AVP Code: 264 Origin-Host
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 23
Origin-Host: shareoliteserve
Padding: 00
AVP: Origin-Realm(296) l=20 f=-M- val=shareoliteBG
AVP Code: 296 Origin-Realm
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 20
Origin-Realm: shareoliteBG
AVP: Result-Code(268) l=12 f=-M- val=DIAMETER_SUCCESS (2001)
AVP Code: 268 Result-Code
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 12
Result-Code: DIAMETER_SUCCESS (2001)
AVP: Host-IP-Address(257) l=14 f=-M- val=20.5.5.10 (20.5.5.10)
AVP Code: 257 Host-IP-Address
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 14
Host-IP-Address: 00011405050a
Host-IP-Address Address Family: IPv4 (1)
Host-IP-Address Address: 20.5.5.10 (20.5.5.10)
Padding: 0000
AVP: Vendor-Id(266) l=12 f=-M- val=10415
AVP Code: 266 Vendor-Id
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 12
Vendor-Id: 10415
VendorId: 3GPP (10415)
AVP: Product-Name(269) l=14 f=--- val=Server
AVP Code: 269 Product-Name
AVP Flags: 0x00
0... .... = Vendor-Specific: Not set
.0.. .... = Mandatory: Not set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 14
Product-Name: Server
Padding: 0000
AVP: Inband-Security-Id(299) l=12 f=-M- val=NO_INBAND_SECURITY (0)
AVP Code: 299 Inband-Security-Id
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 12
Inband-Security-Id: NO_INBAND_SECURITY (0)
AVP: Firmware-Revision(267) l=12 f=--- val=1
AVP Code: 267 Firmware-Revision
AVP Flags: 0x00
0... .... = Vendor-Specific: Not set
.0.. .... = Mandatory: Not set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 12
Firmware-Revision: 1
AVP: Vendor-Specific-Application-Id(260) l=32 f=-M-
AVP Code: 260 Vendor-Specific-Application-Id
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 32
Vendor-Specific-Application-Id: 0000010a4000000c000028af000001024000000c00000004
AVP: Vendor-Id(266) l=12 f=-M- val=10415
AVP Code: 266 Vendor-Id
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 12
Vendor-Id: 10415
VendorId: 3GPP (10415)
AVP: Auth-Application-Id(258) l=12 f=-M- val=Diameter Credit Control (4)
AVP Code: 258 Auth-Application-Id
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 12
Auth-Application-Id: Diameter Credit Control (4)