Cisco SCE8000 Configuration Manual page 119

Chapter 6 Configuring the Line Interface
Disabling IPinIP Tunneling
Step 1 From the SCE(config-if)# prompt, type no ip-tunnel IPinIP skip and press Enter.
DSCP Marking for IPinIP Tunnels
DSCP marking modifies the DSCP bits of the IPv4 header. In IPinIP tunnels there are at least two IP
headers. By default, DSCP marking is performed only on the external IP header (refer to the illustration
below).
Figure 6-1
External DSCP
Version
Version
DSCP marking should be enabled and configured through SCA BB console. Refer to the section "How
Note
to Manage DSCP Marker Values" in the chapter "Using the Service Configuration Editor: Traffic
Control" in the Cisco Service Control Application for Broadband User Guide for further information.
Use this command to configure the SCE platform to mark the DSCP bits of the internal IP header. This
command takes effect only when IPinIP skip is enabled.
From the SCE(config-if)# prompt, type ip-tunnel IPinIP DSCP-marking-skip and press Enter.
Step 1
Enables DSCP marking on the internal IP header of IPinIP traffic.
OL-16479-02
DSCP Marking for IPinIP Tunnels
marking
L1 – L2
H Len TOS
Identification
TTL Protocol
Source Address
Destination Address
H Len TOS
Identification
TTL Protocol
Source Address
Destination Address
L4 – L7
Internal DSCP
marking
Total Length
Flags Fragment Offset
Header Checksum
Total Length
Flags Fragment Offset
Header Checksum
Cisco SCE8000 Software Configuration Guide
Tunneling Protocols
6-5