Quality of Service
The 7705 SAR-Hm series of routers supports Quality of Service (QoS) as covered in the following topics:
QoS policies
For general information about QoS policies support, see the following topics in the 7450 ESS, 7750 SR, 7950 XRS, and VSR Quality of Service Guide, "QoS policies":
QoS overview
Forwarding classes
Queue parameters
QoS policies overview
Service versus network QoS
QoS policy entities
Network QoS policies
Network queue QoS policies
Service ingress QoS policies
Service egress QoS policies
Configuration notes
Network QoS policies
This section describes Dedicated bearers functionality
For general information about network QoS policies support, see the following topics in the 7450 ESS, 7750 SR, 7950 XRS, and VSR Quality of Service Guide, "Network QoS Policies":
-
Network QoS policies overview
-
Network ingress
-
Network ingress tunnel QoS override
-
Network ingress IP match criteria
-
-
Network egress
-
Basic configurations
-
Service management tasks
For descriptions of network QoS policy commands, see the 7450 ESS, 7750 SR, 7950 XRS, and VSR Classic CLI Command Reference Guide and the 7450 ESS, 7750 SR, 7950 XRS, and VSR Clear, Monitor, Show, and Tools CLI Command Reference Guide.
Dedicated bearers
A default bearer is established when the node first attaches to a cellular network for each cellular port that has an enabled SIM. An IP address is assigned for each default bearer and the node uses this IP address for the associated PDN router interface that is used to route traffic to and from the cellular network. See the PDN router interfaces section for information about PDN router interfaces and IP address assignment.
In addition to the default bearer, the node accepts network-initiated dedicated bearer establishment. The node does not initiate dedicated bearers toward the network.
Dedicated bearers provide a dedicated tunnel for specific types of traffic depending QoS requirements. Because they are established for the same cellular port as the default bearer, dedicated bearers use the same PDN router interface configured for the default bearer for sending and receiving traffic. Dedicated bearers can be a guaranteed bit rate (GBR) or non-GBR, whereas the default bearer can only be non-GBR. Dedicated bearers use traffic flow templates (TFTs) to provide special treatment to specific services that need to use the dedicated bearers.
The network programs TFTs on the cellular interface for each dedicated bearer. The TFTs contains at least one and up to eight packet filter items as follows:
source address (with subnet mask)
IP protocol number (TCP, UDP)
destination port range
source port range
IPSec Security Parameter Index (SPI)
type of Service (TOS) (IPv4)
Flow-Label (IPv6 only)
evaluation precedence index
The node expects only one TFT to be programmed by the network for each dedicated bearer. More than one TFT per dedicated bearer is not supported.
The node expects that the TFT programmed per dedicated bearer will contain only a TOS packet filter. Other TFT parameters, if they are specified and programmed, are not supported. The TOS packet filter enables mapping of egress packets that match the TOS settings to the corresponding dedicated bearer and provide GBR, or non-GBR, service for the traffic as required.
Operators must coordinate with their wireless service providers and subscribe for dedicated bearers with the specific TOS packet filter settings as required. Operators must then ensure that service ingress classification and marking for the respective traffic flows match the dedicated bearer TOS packet filter when services traffic must egress the radio interface on the dedicated bearer.
Dedicated bearer and differentiated services over a cellular network illustrates a typical use case for dedicated bearers to differentiate services over a cellular network.
![](graphics/no003567.png)
The following CLI output shows an example of bearer information configured on a cellular port.
*A:Dut-E# show port 1/1/1
===============================================================================
Cellular Interface
===============================================================================
...
==================================================================
Bearer Information
==================================================================
Bearer Id Bearer Type QCI UL GBR UL MBR DL GBR DL MBR
------------------------------------------------------------------
5 default 5
6 dedicated 1 100 200 1000 50000
7 dedicated 9
==================================================================
==========================================================
Traffic Flow Template Packet Filters
==========================================================
Bearer Id Filter Id Precedence Direction TOS/Mask
----------------------------------------------------------
6 1 1 uplink 0xc0/fc
6 2 2 downlink 0x04/fc
7 1 200 both
==========================================================
Network queue QoS policies
For general information about network queue QoS policies support, see the topics listed below in the7450 ESS, 7750 SR, 7950 XRS, and VSR Quality of Service Guide, "Network queue QoS policies":
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Basic configurations
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Default network queue policy values
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Service ingress and egress QoS policies
The 7705 SAR-Hm series of routers support the creation of SAP ingress QoS policies that filter on MAC criteria. For information, see MAC criteria filter.
For general information about service ingress and egress QoS policies support, see the topics listed below in the 7450 ESS, 7750 SR, 7950 XRS, and VSR Quality of Service Guide, "Network queue QoS policies":
Basic configurations
Service ingress QoS policy
Service ingress QoS queue
Ingress forwarding class (FC)
Ingress IP match criteria
Ingress IPv6 match criteria
Service egress QoS policy
Service egress QoS queue
Egress percent-rate support
Egress SAP FC and FP overrides
Dot1p egress remarking
DSCP and IP precedence egress remarking
Service management tasks
For descriptions of service ingress and egress QoS policy commands, see the 7450 ESS, 7750 SR, 7950 XRS, and VSR Classic CLI Command Reference Guide and the 7450 ESS, 7750 SR, 7950 XRS, and VSR Clear, Monitor, Show, and Tools CLI Command Reference Guide.
MAC criteria filter
The 7705 SAR-Hm series of routers support the creation of ingress SAP QoS policies that filter on MAC information with the command config>qos>sap-ingress>mac-criteria>entry>action fc. Operators can filter packets based on Layer 2 MAC criteria to set the forwarding class (FC) for the packet when forwarding to the egress interface. MAC filtering is supported on all services.
The following CLI output shows an example of a MAC criteria filter configured on a VPLS SAP.
#--------------------------------------------------
echo "Port Configuration"
#--------------------------------------------------
port 1/1/4
ethernet
mode access
exit
no shutdown
exit
port 1/1/9
ethernet
mode access
exit
no shutdown
exit
#--------------------------------------------------
echo "QoS Policy Configuration"
#--------------------------------------------------
qos
sap-ingress 66 name "66" create
queue 1 create
exit
queue 2 create
exit
queue 11 multipoint create
exit
fc "af" create
queue 2
exit
fc "be" create
queue 1
exit
mac-criteria
entry 1 create
match frame-type ethernet-II
src-mac 00-14-14-14-00-02
exit
action fc "af"
exit
exit
exit
sap-ingress 67 name "67" create
queue 1 create
exit
queue 2 create
exit
queue 11 multipoint create
exit
fc "af" create
queue 2
exit
fc "be" create
queue 1
exit
mac-criteria
entry 1 create
match frame-type ethernet-II
src-mac 00-14-14-14-00-01
exit
action fc "af"
exit
exit
exit
exit
#--------------------------------------------------
echo "Service Configuration"
#--------------------------------------------------
service
customer 1 name "1" create
description "Default customer"
exit
vpls 12 name "12" customer 1 vpn 12 create
description "Default tls description for service id 12"
stp
shutdown
exit
sap 1/1/4 create
description "Default sap description for service id 12"
static-mac 00:14:14:14:00:02 create
ingress
qos 66
exit
no shutdown
exit
sap 1/1/9 create
description "Default sap description for service id 12"
static-mac 00:14:14:14:00:01 create
ingress
qos 67
exit
no shutdown
exit
no shutdown
exit
exit
MAC criteria command reference
The 7705 SAR-Hm series of routers support the MAC criteria commands liststed in this section. For command descriptions, see the 7450 ESS, 7750 SR, 7950 XRS, and VSR Classic CLI Command Reference Guide .
MAC criteria configuration commands
config qos sap-ingress
mac-criteria
entry entry-id [create]
no entry entry-id
[no] action [fc fc-name]
description description
no description
match [frame-type {802dot3|802dot2-llc|802dot2-snap | ethernet-II}
no match
dot1p dot1p-value [dot1p-mask]
no dot1p
dsap dsap-value [dsap-mask]
no dsap
dst-mac ieee-address [ieee-address-mask]
no dst-mac
etype etype-value
no etype
inner-tag value [vid-mask]
no inner-tag
outer-tag value [vid-mask]
no outer-tag
snap-oui {zero | non-zero}
no snap-oui
snap-pid snap-pid
no snap-pid
src-mac ieee-address [ieee-address-mask]
no src-mac
ssap ssap-value [ssap-mask]
no ssap
renum old-entry-number new-entry-number
type filter-type
no type