Cisco 1700 series Configuring

17
Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers
OL-3317-03
Configuring Quality of Service Parameters
Configuring Quality of Service Parameters
This section discusses quality of service (QoS) parameters that can be configured for the 1700 series
platforms when using the ADSL WIC. The following features are included:
• Low Latency Queuing (Priority Queuing with Class-Based Weighted Fair Queuing)
• DiffServ
• Committed Access Rate
• Multilink PPP over ATM with Link Fragmentation and Interleaving
• Weighted Random Early Detection
• ATM per-VC Queuing and VC Bundling
• ATM Cell Loss Priority Bit Marking
• Compressed RTP
• Tunable Transmission Ring
• MLP Bundling
Low Latency Queuing (Priority Queuing with Class-Based Weighted Fair
Queuing)
Low latency queuing (LLQ) allows strict priority queuing (PQ) to class-based weighted fair queuing
(CBWFQ). This priority queuing allows delay-sensitive data such as voice packets to be de-queued and
sent before other packet traffic, reducing jitter in voice conversations. To configure LLQ, enter the
priority command under the CBWFQ configuration.
Configuration Example
The following example shows a Cisco 1751 router configured with LLQ.
hostname zorro
username ruby-1 password 7 36497A4872384A
!
class-map match-all VOIP
match ip dscp 32
class-map CRITICAL
match access-group 100
!
policy-map 1751_ADSL
class CRITICAL
priority 48
class VOIP
bandwidth 64
set ip precedence 6
!
interface Loopback1
ip address 10.0.0.10 255.255.255.252
!
interface ATM0/0
dsl operating-mode auto
no ip address
no atm ilmi-keepalive
!

Cisco 1700 series Specifications

General

Brand	Cisco
Model	1700 series
Category	Network Router
Language	English