Huawei eSpace 6805 Administrator's Manual page 153

eSpace 6805 IP Phone
Administrator Guide
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The window for parsing packets in the Wireshark includes:
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In the Wireshark, you can enter filter criteria in the Filter text box shown in
packets that meet the filter criteria are displayed.
Issue 01 (2014-01-06)
Figure 6-78 Conversations
In the basic packet information, such as all types of packets generated during mobile
phone conversions, the TCP and UDP tab pages are displayed. On the TCP tab page, the
following columns are included: Address A, Port A, Address B, Port B, Bytes, Bytes
A->B, and Bytes A<-B.
On the TCP and UDP tab pages shown in
but different port numbers are displayed in different columns but are calculated together.
Choose Statistics > Summary to calculate the total packet bytes. Before calculating the
total packet bytes, ensure that the filter criteria are set.
After the preceding packet length is calculated, subtract 14 bytes (layer 2 information)
and packet encapsulation added to the original packets by GGSN or Serving GPRS
Support Node (SGSN), such as generic routing encapsulation (GRE) or GPRS tunneling
protocol (GTP) encapsulation. The various encapsulation lengths are as follows:
− GTP V0 header 20 bytes
GTP V1 header: The fixed part is 8 bytes and the common part is 12 bytes.
− UDP header
8 bytes
− IP header
20 bytes
− GRE header
4 bytes
Upper part: area for obtaining packet serial numbers
Middle part: area for parsing the selected packet
Lower part: area for displaying the original code streams for the selected packet
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Figure 6-78, packets that have same address
6 Appendix
Figure 6-79; the
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