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Parameters
mpls-exp-value — The 3-bit MPLS EXP bit value, expressed as a decimal integer.
Default
Values
remarking
Syntax
remarking
Context
config>qos>network policy-id>egress
Description
This command remarks both access egress traffic and network egress traffic. The remarking is
based on the forwarding class to LSP EXP/Dot1p/DSCP bit mapping defined under the egress
node of the network QoS policy .
On network egress, for MPLS packets, only LSP EXP and Dot1p values can be marked. The LSP
EXP mapping is defined in the network policy of type ip-interface and the Dot1p mapping can be
defined in the network policy of type port.
On network egress, for IP packets, DSCP and Dot1p values can be marked. The Dot1p and DSCP
values can be configured in the network policy of type port.
Normally, packets that ingress on network ports have, 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
LSP EXP to forwarding class mapping. The 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 SAS-X is connected to a different DiffServ domain where the
EXP forwarding class mapping is different.
Typically, no remarking is necessary when all devices are in the same DiffServ domain. The
network QoS policy supports an egress flag that forces remarking of packets that were received on
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.
Ingress IP Interface Type
Network Non-Trusted
Network Trusted (Default)
7210 SAS-X and 7210 SAS-R6 OS Quality of Service Guide
none
0 — 7
and Trust State
Egress Network IP Interface
Trust Remark Disabled
(Default)
Egress Remarked
Egress Not Remarked
Operational Commands
Egress Network IP Inter-
face Trust Remark
Enabled
Egress Remarked
Egress Remarked
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