Cisco Cisco Packet Data Interworking Function (PDIF) トラブルシューティングガイド
APN Configuration Mode Commands
ip qos-dscp ▀
Cisco ASR 5000 Series Command Line Interface Reference ▄
OL-22947-02
Usage
DSCP levels can be assigned to specific traffic patterns in order to ensure that data packets are delivered
according to the precedence with which they‘re tagged. The diffserv markings are applied to the IP header of
every subscriber data packet transmitted over the Gi interface(s).
The four traffic patterns have the following order of precedence: background (lowest), interactive, streaming,
and conversational (highest). Data packets falling under the category of each of the traffic patterns are tagged
with a DSCP that further indicate their precedence as shown in following tables respectively:
according to the precedence with which they‘re tagged. The diffserv markings are applied to the IP header of
every subscriber data packet transmitted over the Gi interface(s).
The four traffic patterns have the following order of precedence: background (lowest), interactive, streaming,
and conversational (highest). Data packets falling under the category of each of the traffic patterns are tagged
with a DSCP that further indicate their precedence as shown in following tables respectively:
Table 8. Class structure for assured forwarding (af) levels
Drop Precedence
Class
Class 1
Class 2
Class 3
Class 4
Low
af11
af21
af31
af41
Medium
af12
af22
af32
af41
High
af13
af23
af33
af43
Precedence (low to high)
DSCP
1
Best Effort (be)
2
Class 1
3
Class 2
4
Class 3
5
Class 4
6
Express Forwarding (ef)
The DSCP level can be configured for multiple traffic patterns within a single instance of this command.
Example
The following command configures the DSCP level for the streaming traffic pattern to be
The following command configures the DSCP level for the streaming traffic pattern to be
:
The following command configures the DSCP levels for the conversational, streaming, interactive and background
traffic patterns to be ef, ef, af22, and af41, respectively:
traffic patterns to be ef, ef, af22, and af41, respectively: