Port-Level Or Physical-Level Qos Classification; Configuring The Encapsulation Type; Configuring The Autonegotiation On An Interface - Cisco ASR 1000 Configuration Manual

Configuration Tasks

Port-Level or Physical-Level QoS Classification

Use the following commands for port or physical level classification:
Command
Router(config-if)# plim qos input map ip all
queue low-latency | 0
Router(config-if)# plim qos input map ip
dscp-based
Router(config-if)#plim qos input map ip dscp
dscp-value | dscp-range queue low-latency | 0

Configuring the Encapsulation Type

By default, the interfaces on the Gigabit Ethernet SPAs support Advanced Research Projects Agency
(ARPA) encapsulation. They do not support configuration of service access point or SNAP encapsulation
for transmission of frames; however, the interfaces will properly receive frames that use service access
point and SNAP encapsulation.
The only other encapsulation supported by the SPA interfaces is IEEE 802.1Q encapsulation for virtual
LANs (VLANs).

Configuring the Autonegotiation on an Interface

Fast Ethernet and Gigabit Ethernet interfaces use a connection-setup algorithm called autonegotiation.
Autonegotiation allows the local and remote devices to configure compatible settings for communication
over the link. Using autonegotiation, each device advertises its transmission capabilities and then agrees
upon the settings to be used for the link.
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
10-10
Chapter 10 Configuring the Ethernet SPAs
Purpose
Allows user to specify all IPv4 packets as high or
low priority.
low latency—Specifies high priority packets.
•
Enter 0 for a low priority packets
The no form of this command disables all IPv4
classification. By default, without using this
command, the command is disabled.
Enables IP DSCP-based classification.
By default, without using this command, the
Gigabit Ethernet SPA enables IP precedence-based
classification for the Cisco ASR 1000 Series
Routers.
]The no form of this command totally disables the
IP DSCP-based classification.
Allows the user to specify an IP DSCP value or
range.
low-latency—Specifies high priority IP DSCP
•
value. Enter 0 for low priority.
By default, without this command, the Gigabit
Ethernet SPA classifies DSCP cs6-cs7 as high
priority.
The no form of this command removes the IP
DSCP value or range.
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