Huawei Quidway S3500 Series Operation Manual page 345

Operation Manual - QoS/ACL
Quidway S3500 Series Ethernet Switches
Table 1-21 Length of template elements
Name
cos
dip
dmac
dport
dscp
ip-precedence
tos
ethernet-protocol
fragments
icmp-code
icmp-type
ip-protocol
sip
smac
sport
tcp-flag
Note:
The numbers listed in the table are not the actual length of these elements in IP packets,
but their length in flow template. DSCP field is one byte in flow template, but six bytes in
IP packets. You can judge the total length of template elements using these numbers.
The dscp, ip-precedence and tos fields jointly occupy one byte. One byte is occupied
no matter you define one, two or three of these fields.
The fragment field is 0 in length in flow template, so it can be ignored in calculating the
total length of template elements.
Description
802.1p priority in the Ethernet packet header
Destination IP field in IP packet header
Destination MAC field in Ethernet packet header
Destination port field
DSCP field in IP packet header
IP precedence field in IP packet header
ToS field in IP packet header
Protocol field in Ethernet packet header
Fragments field in IP head
ICMP code field
ICMP type field
Protocol field in IP packet header
Source IP field in IP packet header
MAC field in Ethernet packet header
Source port field
Flag field in TCP packet header
Huawei Technologies Proprietary
1-19
Chapter 1 ACL Configuration
Length in
template
1 byte
4 bytes
6 bytes
2 bytes
1 byte
2 bytes
0 bytes
1 byte
1 byte
1 byte
4 bytes
6 bytes
2 bytes
1 byte