Network QoS Policy Command Reference
130 Quality of Service Guide
remarking
Syntax [no] remarking [force]
Context config>qos>network>egress
Description This command remarks both customer traffic and egress network IP interface traffic; VPRN customer
traffic is not remarked. The remarking is based on the forwarding class to DSCP and LSP EXP bit
mapping defined under the egress node of the network QoS policy.
Normally, packets that ingress on network ports have either DSCP or, in case of MPLS packets, LSP
EXP bit set by an upstream router. The packets are placed in the appropriate forwarding class based
on the DSCP to forwarding class mapping or the LSP EXP to forwarding class mapping. The DSCP
or LSP EXP bits of such packets are not altered as the packets egress this router, unless remarking is
enabled.
Remarking can be required if this router is connected to a different DiffServ domain where the DSCP
to forwarding class mapping is different.
Normally no remarking is necessary when all router devices are in the same DiffServ domain.
The network QoS policy supports an egress flag that forces remarking of packets that were received
on trusted IES and network IP interfaces. This provides the capability of remarking without regard to
the ingress state of the IP interface on which a packet was received. The effect of the setting of the
egress network remark trusted state on each type of ingress IP interface and trust state is shown in the
following table.
The remark trusted state has no effect on packets received on an ingress VPRN IP interface.
The no form of this command reverts to the default behavior.
Default no remarking — Remarking disabled in the Network QoS policy.
Parameters force — Specifies that all IP routed traffic egressing the associated network interface will have its
EXP, DSCP, P-bit and DE bit setting remarked as defined in the associated QoS policy. Only
bit fields configured in the QoS policy will be remarked; all others will be left untouched or
set based on the default if the fields were not present at ingress.
Ingress IP Interface Type
and Trust State
Egress Network IP Interface Trust
Remark Disabled (Default)
Egress Network IP Interface Trust
Remark Enabled
IES Non-Trusted (Default) Egress Remarked Egress Remarked
IES Trusted Egress Not Remarked Egress Remarked
VPRN Non-Trusted Egress Remarked Egress Remarked
VPRN Trusted (Default) Egress Not Remarked Egress Not Remarked
Network Non-Trusted Egress Remarked Egress Remarked
Network Trusted (Default) Egress Not Remarked Egress Remarked
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