Figure 22: Prepended Header; Table 57: Prepended Header Field Descriptions - Juniper POLICY MANAGEMENT - CONFIGURATION GUIDE V11.1.X Configuration Manual

JUNOSe 11.1.x Policy Management Configuration Guide
NOTE: For IP mirroring, you must include both VSA 26-59 and VSA 26-61, or you
must omit both of these VSAs. If you use only one of these VSAs, the configuration
fails.
Figure 22 on page 250 shows the structure of the prepended header. The values in
parentheses indicate the fixed value for individual fields. For fields that do not have
a fixed value listed, the value is dynamically created for each mirrored packet. Table
57 on page 250 lists the fields in the prepended header and indicates the values and
field length.

Figure 22: Prepended Header

Table 57: Prepended Header Field Descriptions

250
Understanding the Prepended Header During a Packet Mirroring Session
Field
IP Header
Version
IHL
Type of Service
Total Length
Identification
Flags
Fragment Offset
Value
4
5
0
Dynamically computed
Dynamically computed
Dynamically computed
Dynamically computed
Length (Bits)
4
4
8
16
16
3
13