QoS Policies
7210 SAS D, E, K OS Quality of Service Guide Page 31
• At least one default unicast forwarding class meter or queue based on the platform. The
parameters that can be configured for a meter and queue are discussed below.
• Optional multipoint forwarding class meter or queue based on the platform.
Optional network QoS policy elements include:
• Additional unicast meters or queues.
• Additional multipoint meters or queues.
• Dot1p value to forwarding class and profile state mappings for all values received.
• Option to use DEI bit along with Dot1p classification for profile state mapping on 7210
SAS-D and 7210 SAS-K.
• Option to use IP DSCP value to forwarding class and profile state mappings for all DSCP
values received (available only on 7210 SAS-K).
On 7210 SAS-K, Dot1p classification entries that map Dot1p bits to FC and IP DSCP
classification entries that map IP DSCP values to FC is defined by using Dot1p-classification
policies and DSCP classification policies respectively.
Network policy ID 1 is reserved as the default network QoS policy. The default policy cannot be
deleted or changed. The default network QoS policy is applied to all access uplink ports which do
not have another network QoS policy explicitly assigned.
The network QoS policy applied at network egress (that is, on an access uplink port) determines
how or whether the profile state is marked in packets transmitted into the service core network. If
the profile state is marked in the service packets, out-of-profile packets are preferentially dropped
over in-profile packets at congestion points in the network.
For network egress, traffic remarking in the network QoS policy is always enabled for 7210 SAS-
E. It can be enabled or disabled for 7210 SAS-D and 7210 SAS-K devices.
Note: IP DSCP marking on egress is not supported on all 7210 platforms
Table 5 lists the default mapping of forwarding class to Dot1p values for egress marking.
Table 5: Default Network QoS Policy Egress Marking
FC-ID FC Name FC Label DiffServ
Name
Egress Dot1p
Marking
In-Profile Out-of-
Profile
7 Network Con-
trol
nc NC2 111 - 7 111 - 7
6 High-1 h1 NC1 110 - 6 110 - 6
5 Expedited ef EF 101 - 5 101 - 5
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