Transcript RTP (Real Time Protocol)

Avaya
Voice Monitoring Manager
Kathy New
Colorado Springs School District #11
Telecomm Staff’s
Network
Troubleshooting
and Monitoring
Geek Tool
Voice Monitoring Manager (VMM):
• Logs all IP telephone connections
and calls.
• Provides a graphical view of IP
connections.
• Provides data for network staff on
Telecomm system health
• Continuation of network assessment
which is a snapshot in time.
Geek Speak
• SNMP (Simple Network
Management Protocol)
- a standard for gathering statistical
data about network traffic and the
behavior of network components
• RTP (Real Time Protocol) encapsulates
VoIP packets for transmission over IP
• RTCP (Real Time Control Protocol)
Protocol that works in conjunction with RTP.
RTCP control packets are periodically
transmitted by each participant in an RTP
session to all other participants. Feedback of
information to the application can be used to
control performance and for diagnostic
purposes.
Installing VMM
• When possible, install on a separate
server. VMM does not play well with
other applications.
• Install application on separate drive
from files if possible.
• A 90 day trial version can be installed
• Be sure licenses are purchased for the
number of endpoints you have.
S8700 Configuration
Configure the IP-Options System Parameters Screen.
The default Server IP Address is the server address where VMM is loaded
Configure the IP Network Region Form
VMM Server Configuration
Ensure port 1099 is available. If it’s not
available, the VMM server will attempt to
use the following ports: 49177, 51173, or
63006.
Windows SNMP Agent must be configured
to start automatically. Check by going to
Select Start, Settings, Control Panel,
Administrative Tools, Services .
Check that a SNMP Community
ID has been created. The
Community ID for your
Windows SNMP Agent must
match the Community ID
defined in the VoIP
Monitoring Manager Options
dialog box. By default it is
public, but it may have been
changed.
While in SNMP service, select
Properties and then the
Security tab.
If Public does not already exist,
add a public ID with Read
and Write privileges.
Click OK.
Settings on VMM server
Logon as local host to VMM server. Go to
Start, Run and type mstsc –console. Select
the VMM server and then type your logon
name and password for server.
Right click on VMM server icon at the right of
the task bar and click on Show VMM Server
Connect to database: Select
File, Connect to database.
Enter the Database Server
name, Logon Name, and
password. The server name
can be either a name or an IP
address. Default is localhost.
Check that the license server is
configured.
Under Edit are choices for SNMP settings, Trap settings, Options and
Configure Aliases (Friendly names)
The server Database has limited storage (about 2Gb). Stores data in SQL
Server 2005 Express database for 30 days and or you can upgrade to SQL
Server 2005 and it will be stored for 100 days.
Can also change configuration for RTCP port, configuration
messaging port and client password.
Traps requires an SNMP server to be configured on the network. This will
probably need to be coordinated with network staff.
Configure friendly names
• Create a file in excel with IP address
and the Medpro Name in separate
columns.
• Convert to a text file, name it
“friendlylabelsclient.ini”and place in
the VMM folder on the server.
• Click on “Toggle Aliases” in VMM to
show names instead of IP addresses.
Installing the License
Copy license file from Avaya into folder on VMM server.
Connect to WebLM Server
User name is admin and password is weblmadmin
Type file location or browse to location and click install.
Can also add users, change passwords and view license
information.
Using VMM
More Geek Speak
• Quality of Service: Measure of the level of quality
that a service requires. VoIP has 3 main factors:
Jitter, Round Trip Time, and Packet Loss.
• Jitter: Packets arrive out of sequence
• Jitter Buffer Underrun: when the arrival time of
packets increases beyond a specific threshold
• Jitter Buffer Overun: when too many packets arrive
too quickly the jitter buffer may fill and be unable to
handle any further packets
• Packet Loss: IP packets are lost or discarded if
time to live is exceeded
• Round Trip Time: Time needed go to destination
and return. One way time should not exceed 200
ms and 500 ms causes noticeable problems.
•TTL (Time to live) – Part of IP packet that provides
system with time to keep packet before discarding if
not deliverable.
•Number of Sequence Jumps – number of hops
between endpoints
•Max Sequence Jump – number of packets that
reached maximum number of hops between
endpoints
•Number Sequence Falls
•Max Sequence Fall
•Received Octets
Using VMM
Icons Explained
•Connect to new Server
•Export data for sessions
•Search
•Graph Report
•Configure Report Properties
•Copy report (graphs)
•List all active endpoints
•View report for selected endpoints/session
•System Summary Report
•Update/Refresh
•View Results/List (toggle between windows)
•Display license info at bottom
•Help o specific item
•Help documentation
Configure Report Properties
Search
• You can search
endpoints active
from a specified
time in the past or
within a date
range. The
Advanced Search
options enable
you to narrow
your search to
match phone
numbers, SIP user
names, network
addresses, or QoS
level.
System Reports
Endpoint Reports (Medpro/gateway Level)
Endpoint Report (per call)
Exported reports ( Excel )
1st section:
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Session ID
Participant ID
Start Time/End Time
Receiver IP Address
Receiver Phone number
Tool/Board type
Payload type (codec)
Gatekeeper
Last Known 802.1p
Last known 802.1Q
Acoustic echo cancellation
Last known DSCP
Echo tail length
Frame size
Media encryption
Silence Suppression
2nd section:
• SessionID
• Participant ID
• TimeOffset
• Jitter
• RTT
• Lost Packets
• Octets
• RSVP (enabled or disabled)
• LargestSeqJumps
• NumberSeqJumps
• LargestSeqFall
• NumberSeqFalls
• TTL
• MaxJitter
• JitterBufferDelay
• JitterBufferOverRuns
• JitterBufferUnderRuns
3rd Section:
• Session ID
• Participant ID
• HopCount
• HopTime (ms)
• HopAddress -
Other Tools:
Ping
ASA command ping ip xxx.xxx.xxx.xxx board xxxx
DOS command ping xxx.xxx.xxx.xxx
Trace route
Trace-route ip-address xxx.xxx.xxx.xxx board xxxxx
DOS command tracert xxx.xxx.xxx.xxx
Netstat -a
Questions???