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Network connectivity testing
Cisco TelePresence ISDN Gateway 2.1 Online help (Printable format) 70 of 135
Network connectivity testing
The Network connectivity page can be used for troubleshooting issues that arise because of problems
in the network between the Cisco TelePresence ISDN Gateway and a remote video conferencing
device being called (or a device from which a user is attempting to call the ISDN Gateway).
The Network connectivity page enables you to attempt to 'ping' another device from the ISDN
Gateway's web interface and perform a 'traceroute' of the network path to that device. The results
show whether or not you have network connectivity between the ISDN Gateway and another device.
You can see from which port the ISDN Gateway will route to that address. For a hostname, the IP
address to which it has been resolved will be displayed.
To test connectivity with a remote device, go to Network > Connectivity. In the text box, enter the IP
address or hostname of the device to which you want to test connectivity and click Test connectivity.
For each successful 'ping', the time taken for the ICMP echo packet to reach the host and for the reply
packet to return to the ISDN Gateway is displayed in milliseconds (the round trip time). The TTL (Time
To Live) value on the echo reply is also displayed.
For each intermediate host (typically routers) on the route between the ISDN Gateway and the remote
device, the host's IP address and the time taken to receive a response from that host is shown. Not all
devices will respond to the messages sent by the ISDN Gateway to analyse the route; routing entries
for non-responding devices is shown as <unknown>. Some devices are known to send invalid ICMP
response packets (e.g. with invalid ICMP checksums); these responses are not recognized by the
ISDN Gateway and therefore these hosts' entries are also shown as <unknown>.
Notes:
The ping message is sent from the ISDN Gateway to the IP address of the endpoint that you enter.
Therefore, if the ISDN Gateway has an IP route to the given IP address, regardless of whether that
route lies out of port A or port B, the ping will be successful. This feature allows the ISDN Gateway’s
IP routing configuration to be tested, and it has no security implications.
If you are unable to ping the device then check your network configuration especially any firewalls
using NAT.
- Cisco TelePresence 1
- ISDN Gateway 1
- Version 2.1 1
- Contents 2
- Invalid passwords 8
- Using the auto attendant 12
- globally: either 13
- Dial plan configuration 14
- Diagnostic controls 16
- Understanding the dial plan 19
- Using rules 20
- Rule ordering 20
- Displaying the rules list 21
- Modifying the rules list 23
- Testing the dial plan 23
- Adding dial plan rules 24
- Updating dial plan rules 29
- Example dial plan rules 34
- ISDN to IP calls 37
- Dial plan syntax 41
- local return address: The 45
- Gatekeeper status 46
- Registration view 47
- Displaying the user list 48
- Adding and updating users 49
- Updating your user profile 52
- Changing your password 53
- Configuring network settings 54
- IP status 55
- Ethernet configuration 56
- Ethernet status 56
- DNS settings 59
- Viewing DNS status 60
- Port preferences 61
- IP routes configuration 62
- Current IP status 63
- Configuring IP services 64
- Configuring SNMP settings 66
- Configured trap receivers 67
- Access control 67
- Configuring QoS settings 68
- ToS configuration 69
- DiffServ configuration 69
- Default settings 69
- Network connectivity testing 70
- Basic settings 71
- ISDN advanced settings 73
- ISDN codec settings 75
- ISDN multipoint settings 76
- Port settings 77
- Gatekeeper settings 81
- where multiple ISDN 83
- where there is only one 83
- resources available 85
- resources unavailable 85
- System time 87
- Advanced security mode 88
- Hashing passwords 89
- Password format 90
- Expiring passwords 90
- TelePresence ISDN Gateway 91
- Displaying general status 95
- Displaying ISDN status 96
- Displaying security status 98
- Working with the event logs 99
- Audit log 100
- Call Detail Records 100
- Working with the audit logs 101
- Logging using syslog 106
- Using syslog 107
- Call Detail Record log 108
- CDR log display 109
- CDR log display 110
- Voice prompt specification 116
- Precedence 117
- The factory default file set 117
- Localization files 117
- Customization files 117
- Configuring SSL certificates 119
- TANDBERG 121
- Software licenses 121
- AVC VIDEO 122
- RSA Data Security Inc 122
- The Internet Society 122
- Info-ZIP 123
- The OpenSSL Project 125
- N.A.T. GmbH 126
- Spirit Corporation 127
- AES License 127
- HMAC License 127
- SHA1 License 128
- Telenetworks 129
- Net-SNMP 129
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