Cisco 1700 series 구성 - 페이지 24

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Cisco 1700 series에 대해서도 마찬가지입니다: 규정 준수 및 안전 정보 매뉴얼 (45 페이지), 매뉴얼 (15 페이지), 구성 매뉴얼 (25 페이지), 애플리케이션 노트 (41 페이지), 하드웨어 문제 해결 (12 페이지), 개요 매뉴얼 (13 페이지), 매뉴얼 (5 페이지), 빠른 시작 매뉴얼 (6 페이지), 하드웨어 설치 매뉴얼 (46 페이지)

Cisco 1700 series 구성
Configuring Quality of Service Parameters
The basicpremise of cRTP is that although several fields in the IP, UDP, and RTP header change from
packet to packet, the differences in these fields from packet to packet are constant. The compression
scheme in cRTP encodes the header to reduce the size of the information to be transmitted. With cRTP,
a 40-byte IP, UDP, and RTP header of a VoIP packet can be compressed to 2 to 4 bytes per packet,
yielding approximately 11.2 kbps of bandwidth for a G.729 codec call with RTP.
cRTP can be applied to an ATM link through cRTP for MLP over ATM, or through cRTP for PPP over
ATM.
Configuration Example
The following are examples of cRTP for MLP over ATM, and cRTP for PPP over ATM. The ip rtp
header-compression command sets cRTP.
cRTP Using MLP over ATM
interface Loopback1
ip address 10.0.0.9 255.255.255.255
!
interface ATM0/0
no ip address
no atm ilmi-keep-alive
!
dsl operating-mode auto
!
interface ATM0/0.1 point-to-point
pvc 0/33
ip 10.0.0.10
vbr-rt 320 320 30
tx-ring-limit 3
protocol ppp Virtual-Template1
!
interface Virtual-Template1
bandwidth 320
ip unnumbered Loopback1
ip tcp header-compression iphc-format
service-policy output ADSL-2
ppp multilink
ppp multilink fragment-delay 4
ppp multilink interleave
ip rtp header-compression iphc-format
cRTP Using PPP over ATM
interface Loopback1
ip address 10.0.0.9 255.255.255.255
!
interface ATM0/0
no ip address
no atm ilmi-keep-alive
!
dsl operating-mode auto
!
interface ATM0/0.1 point-to-point
pvc 0/33
protocol ip 10.0.0.10
vbr-rt 320 320 30
tx-ring-limit 3
protocol ppp Virtual-Template1
!
Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers
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