이 문서에서는 Mediatrace 기능을 사용하여 음성 및 비디오 품질에 영향을 주는 패킷 손실 및 지터와 같은 네트워크 장애를 신속하게 격리하는 방법에 대해 설명합니다.
이 문서에 대한 특정 요건이 없습니다.
이 문서의 정보는 다음 소프트웨어 및 하드웨어 버전을 기반으로 합니다.
이 문서의 정보는 특정 랩 환경의 디바이스를 토대로 작성되었습니다. 이 문서에 사용된 모든 디바이스는 초기화된(기본) 컨피그레이션으로 시작되었습니다. 현재 네트워크가 작동 중인 경우, 모든 명령어의 잠재적인 영향을 미리 숙지하시기 바랍니다.
문서 규칙에 대한 자세한 내용은 Cisco 기술 팁 규칙을 참조하십시오.
이 예에서는 두 EX90 엔드포인트 간에 패킷 손실이 발생하는 비디오 통화에 대한 컨피그레이션에 대해 설명합니다. 네트워크 토폴로지는 다음과 같습니다.
Mediatrace 개시자 및 응답자를 구성하는 프로세스는 매우 간단합니다. 컨피그레이션에 대해서는 다음 예를 참조하십시오.
interface Vlan201
ip address 10.2.3.70 255.255.255.0
ip rsvp snooping
mediatrace responder
mediatrace initiator source-ip 10.2.3.70 max-sessions 100
interface GigabitEthernet0/0
description "CE router connected to MPLS PE router"
ip address 10.16.1.2 255.255.255.252
ip rsvp source address 10.2.3.65
!
interface GigabitEthernet0/1
description "Connected to Central-SW"
ip address 10.2.3.65 255.255.255.0
mediatrace responder
mediatrace initiator source-ip 10.2.3.65 max-sessions 100
interface GigabitEthernet0/0
description "CE router connected to MPLS PE router"
ip address 10.16.2.2 255.255.255.252 ip rsvp source address 10.2.4.65
!
interface GigabitEthernet0/1
description "Connected to BR3-SW"
ip address 10.2.4.65 255.255.255.0
mediatrace responder
mediatrace initiator source-ip 10.2.4.65 max-sessions 100
interface Vlan202
ip address 10.2.4.70 255.255.255.0
ip rsvp snooping
mediatrace responder
mediatrace initiator source-ip 10.2.4.70 max-sessions 100
Cisco에서는 엔터프라이즈 네트워크의 모든 해당 노드에서 Mediatrace를 활성화하는 것이 좋습니다. 3750 및 ISR-G2와 같은 공통 스위칭 및 라우팅 플랫폼에서 지원됩니다.
관심 있는 오디오 또는 RTP(Video Routing Table Protocol) 스트림의 소스 및 대상 IP 주소/포트 번호를 식별합니다.
EX90xstatus MediaChannels
*s MediaChannels Call 9 IncomingAudioChannel 115 Encryption Status: Off
*s MediaChannels Call 9 IncomingAudioChannel 115 Audio Protocol: AACLD
*s MediaChannels Call 9 IncomingAudioChannel 115 Audio Mute: False
*s MediaChannels Call 9 IncomingAudioChannel 115 Audio Channels: 1
*s MediaChannels Call 9 IncomingAudioChannel 115 Transport RTP Local IpAddress:
"10.2.3.41"
*s MediaChannels Call 9 IncomingAudioChannel 115 Transport RTP Local Port: 16454
*s MediaChannels Call 9 IncomingAudioChannel 115 Transport RTP Remote IpAddress:
"10.2.4.5"
*s MediaChannels Call 9 IncomingAudioChannel 115 Transport RTP Remote Port: 16444
*s MediaChannels Call 9 IncomingAudioChannel 115 Transport RTCP Local IpAddress:
"10.2.3.41"
*s MediaChannels Call 9 IncomingAudioChannel 115 Transport RTCP Local Port: 16455
*s MediaChannels Call 9 IncomingAudioChannel 115 Transport RTCP Remote IpAddress:
"10.2.4.5"
*s MediaChannels Call 9 IncomingAudioChannel 115 Transport RTCP Remote Port: 16445
*s MediaChannels Call 9 IncomingVideoChannel 118 Encryption Status: Off
*s MediaChannels Call 9 IncomingVideoChannel 118 ChannelRole: Main
*s MediaChannels Call 9 IncomingVideoChannel 118 Video Protocol: H264
*s MediaChannels Call 9 IncomingVideoChannel 118 Video FrameRate: 30
*s MediaChannels Call 9 IncomingVideoChannel 118 Video ResolutionX: 640
*s MediaChannels Call 9 IncomingVideoChannel 118 Video ResolutionY: 360
*s MediaChannels Call 9 IncomingVideoChannel 118 Transport RTP Local IpAddress:
"10.2.3.41"
*s MediaChannels Call 9 IncomingVideoChannel 118 Transport RTP Local Port: 16456
*s MediaChannels Call 9 IncomingVideoChannel 118 Transport RTP Remote IpAddress:
"10.2.4.5"
*s MediaChannels Call 9 IncomingVideoChannel 118 Transport RTP Remote Port: 16446
*s MediaChannels Call 9 IncomingVideoChannel 118 Transport RTCP Local IpAddress:
"10.2.3.41"
*s MediaChannels Call 9 IncomingVideoChannel 118 Transport RTCP Local Port: 16457
*s MediaChannels Call 9 IncomingVideoChannel 118 Transport RTCP Remote IpAddress:
"10.2.4.5"
*s MediaChannels Call 9 IncomingVideoChannel 118 Transport RTCP Remote Port: 16447
*s MediaChannels Call 9 IncomingVideoChannel 121 Encryption Status: Off
원본 엔드포인트가 연결된 스위치를 식별합니다. 이 스위치는 CDP(Cisco Discovery Protocol) show 명령으로 식별할 수 있습니다.
EX90xstatus Network
*s Network 1 Ethernet MacAddress: "FF:FF:FF:70:E6:B6"
*s Network 1 Ethernet Speed: 100full
*s Network 1 IPv4 Address: "10.2.3.41"
*s Network 1 IPv4 SubnetMask: "255.255.255.0"
*s Network 1 IPv4 Gateway: "10.2.3.65"
*s Network 1 IPv4 DNS Domain Name: ""
*s Network 1 IPv4 DNS Server 1 Address: ""
*s Network 1 IPv4 DNS Server 2 Address: ""
*s Network 1 IPv4 DNS Server 3 Address: ""
*s Network 1 IPv4 DNS Server 4 Address: ""
*s Network 1 IPv4 DNS Server 5 Address: ""
*s Network 1 IPv6 Address: ""
*s Network 1 IPv6 Gateway: ""
*s Network 1 MTU: 1500
*s Network 1 VLAN Voice VlanId: "201"
*s Network 1 VLAN Native VlanId: "202"
*s Network 1 CDP Platform: "cisco WS-C3750V2-24TS"
*s Network 1 CDP Version: "Cisco IOS Software, C3750 Software
(C3750-IPSERVICESK9-M), Version 12.2(58)SE2, RELEASE SOFTWARE (fc1)
*Technical Support: http://www.cisco.com/techsupport*Copyright (c)
1986-2011 by Cisco Systems, Inc.*Compiled Thu 21-Jul-11 01:53 by
prod_rel_team"
*s Network 1 CDP Capabilities: "0x0028"
*s Network 1 CDP DeviceID: "Central-SW"
*s Network 1 CDP PortID: "FastEthernet1/0/23"
*s Network 1 CDP Duplex: "Full"
*s Network 1 CDP VTPMgmtDomain: ""
*s Network 1 CDP Address: "10.2.3.70"
*s Network 1 CDP PrimaryMgmtAddress: "10.2.3.70"
*s Network 1 CDP SysName: ""
*s Network 1 CDP SysObjectID: ""
*s Network 1 CDP VoIPApplianceVlanID: "201"
** end
first-hop 스위치에 로그인하고 흐름 지정자를 구성하여 RTP 스트림을 고유하게 식별합니다. 이 흐름 지정자는 mediatrace poll 명령에서 사용됩니다.
mediatrace flow-specifier RTP
source-ip 10.2.3.41 source-port 16456
dest-ip 10.2.4.5 dest-port 16446
mediatrace poll 명령을 입력합니다.
#mediatrace poll path-specifier source 10.2.3.41 destination 10.2.4.5
perf-monitor flow-specifier RTP
Started the data fetch operation.
Waiting for data from hops.
This may take several seconds to complete...
Data received for hop 1
Data received for hop 2
Data received for hop 3
Data received for hop 4
Data fetch complete.
Results:
Data Collection Summary:
Request Timestamp: 11:00:54.302 EST Sun Mar 10 2013
Request Status: Completed
Number of hops responded (includes success/error/no-record): 4
Number of hops with valid data report: 4
Number of hops with error report: 0
Number of hops with no data record: 0
Detailed Report of collected data:
Number of Mediatrace hops in the path: 4
Mediatrace Hop Number: 1 (host=Central-Wan, ttl=254)
Metrics Collection Status: Success
Reachability Address: 10.2.3.65
Ingress Interface: Gi0/1
Egress Interface: Gi0/0
Metrics Collected:
Flow Sampling Start Timestamp: 10:26:48
Loss of measurement confidence: FALSE
Media Stop Event Occurred: FALSE
IP Packet Drop Count (pkts): 0
IP Byte Count (Bytes): 191965
IP Packet Count (pkts): 402
IP Byte Rate (Bps): 15996
Packet Drop Reason: 64
IP DSCP: 32
IP TTL: 63
IP Protocol: 0
Media Byte Rate Average (Bps): 15058
Media Byte Count (Bytes): 180709
Media Packet Count (pkts): 402
RTP Interarrival Jitter Average (usec): 155
RTP Packets Lost (pkts): 0
RTP Packets Expected (pkts): 397
RTP Packet Lost Event Count: 0
RTP Loss Percent (%): 0.00
Mediatrace Hop Number: 2 (host=BR-Wan, ttl=251)
Metrics Collection Status: Success
Reachability Address: 10.16.2.2
Ingress Interface: Gi0/0
Egress Interface: Gi0/1
Metrics Collected:
Flow Sampling Start Timestamp: 09:58:40
Loss of measurement confidence: FALSE
Media Stop Event Occurred: FALSE
IP Packet Drop Count (pkts): 0
IP Byte Count (Bytes): 331523
IP Packet Count (pkts): 694
IP Byte Rate (Bps): 16576
Packet Drop Reason: 64
IP DSCP: 32
IP TTL: 60
IP Protocol: 0
Media Byte Rate Average (Bps): 15604
Media Byte Count (Bytes): 312091
Media Packet Count (pkts): 694
RTP Interarrival Jitter Average (usec): 1648
RTP Packets Lost (pkts): 14
RTP Packets Expected (pkts): 708
RTP Packet Lost Event Count: 13
RTP Loss Percent (%): 1.97
Mediatrace Hop Number: 3 (host=BR-SW, ttl=251)
Metrics Collection Status: Success
Reachability Address: 10.2.4.70
Ingress Interface: Fa1/0/22
Egress Interface: Fa1/0/24
Metrics Collected:
Flow Sampling Start Timestamp: 22:50:37
Loss of measurement confidence: FALSE
Media Stop Event Occurred: FALSE
IP Packet Drop Count (pkts): 0
IP Byte Count (Bytes): 505526
IP Packet Count (pkts): 1059
IP Byte Rate (Bps): 16850
Packet Drop Reason: 0
IP DSCP: 32
IP TTL: 60
IP Protocol: 17
Media Byte Rate Average (Bps): 16144
Media Byte Count (Bytes): 484346
Media Packet Count (pkts): 1059
RTP Interarrival Jitter Average (usec): 1511
RTP Packets Lost (pkts): 22
RTP Packets Expected (pkts): 1075
RTP Packet Lost Event Count: 21
RTP Loss Percent (%): 2.04
Mediatrace Hop Number: 4 (host=BR-EX90, ttl=251)
Metrics Collection Status: Success
Reachability Address: 10.2.4.5
Ingress Interface: eth0
Egress Interface: None
Metrics Collected:
Flow Sampling Start Timestamp: 11:02:00
Loss of measurement confidence: FALSE
Media Stop Event Occurred: FALSE
IP Packet Drop Count (pkts): 0
IP Byte Count (Bytes): 0
IP Packet Count (pkts): 0
IP Byte Rate (Bps): 0
Packet Drop Reason: 0
IP DSCP: 0
IP TTL: 0
IP Protocol: 17
Media Byte Rate Average (Bps): 16000
Media Byte Count (Bytes): 478219
Media Packet Count (pkts): 1056
RTP Interarrival Jitter Average (usec): 4953
RTP Packets Lost (pkts): 17
RTP Packets Expected (pkts): 1073
RTP Packet Lost Event Count: 6
RTP Loss Percent (%): 0.04
Central-SW#
이러한 관찰은 mediatrace poll 명령 출력에서 수행할 수 있습니다.
패킷 손실에 기여하는 일반적인 요인은 다음과 같습니다.
A. 예. Cisco Prime Collaboration을 사용하면 관리자는 클릭 한 번으로 Mediatrace를 사용하여 비디오 통화를 해결할 수 있으며 결과를 그래픽 형식으로 표시할 수 있습니다.
A. 아니요. Mediatrace는 Mediatrace 개시자 또는 응답자가 구성되면 자동으로 활성화되는 RSVP-TP를 사용합니다. ip rsvp bandwidth 명령을 입력할 필요가 없습니다.
개정 | 게시 날짜 | 의견 |
---|---|---|
1.0 |
12-Apr-2013 |
최초 릴리스 |