ZyXEL Communications 2 Plus User Manual

Chapter 40 System Information & Diagnosis

ZyWALL 2 Plus User’s Guide

567

Figure 391 Call-Triggering Packet Example

40.5 Diagnostic

The diagnostic facility allows you to test the different aspects of your ZyWALL to determine
if it is working properly. Menu 24.4 allows you to choose among various types of diagnostic
tests to evaluate your system, as shown next. Not all fields are available on all models.
Follow the procedure below to get to Menu 24.4 - System Maintenance - Diagnostic.

1 From the main menu, select option 24 to open Menu 24 - System Maintenance.
2 From this menu, select option 4. Diagnostic. This will open Menu 24.4 - System

Maintenance - Diagnostic.

IP Frame: ENET0-RECV Size: 44/ 44 Time: 17:02:44.262
Frame Type:

IP Header:
   IP Version         = 4
   Header Length        = 20
   Type of Service     = 0x00 (0)
   Total Length         = 0x002C (44)
   Identification       = 0x0002 (2)
   Flags            = 0x00
   Fragment Offset     = 0x00
   Time to Live         = 0xFE (254)
   Protocol         = 0x06 (TCP)
   Header Checksum     = 0xFB20 (64288)
   Source IP        = 0xC0A80101 (192.168.1.1)
   Destination IP       = 0x00000000 (0.0.0.0)

TCP Header:
   Source Port        = 0x0401 (1025)
   Destination Port     = 0x000D (13)
   Sequence Number     = 0x05B8D000 (95997952)
   Ack Number         = 0x00000000 (0)
   Header Length        = 24
   Flags            = 0x02 (....S.)
   Window Size        = 0x2000 (8192)
   Checksum         = 0xE06A (57450)
   Urgent Ptr         = 0x0000 (0)
   Options         =
   0000: 02 04 02 00

RAW DATA:
     0000: 45 00 00 2C 00 02 00 00-FE 06 FB 20 C0 A8 01 01 E......... ....
   0010: 00 00 00 00 04 01 00 0D-05 B8 D0 00 00 00 00 00
................
   0020: 60 02 20 00 E0 6A 00 00-02 04 02 00
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