Verifying Ip Addressing And Routing; Verifying Dns Settings - Cisco 7961G-GE - IP Phone VoIP Administration Manual

Chapter 9 Troubleshooting and Maintenance

Verifying IP Addressing and Routing

Verifying DNS Settings

Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.0
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You can also enable the phone to use an alternate TFTP server. Such a setting is
particularly useful if the phone was recently moved from a from one location to
another. See the "Network Configuration Menu" section on page 4-7
instructions.
You should verify the IP addressing and routing settings on the phone. If you are
using DHCP, the DHCP server should provide these values. If you have assigned
a static IP address to the phone, you must enter these values manually.
On the Cisco Unified IP Phone, press the Settings button, choose Network
Configuration, and look at the following options:
DHCP Server—If you have assigned a static IP address to the phone, you do
•
not need to enter a value for the DHCP Server option. However, if you are
using a DHCP server, this option must have a value. If it does not, check your
IP routing and VLAN configuration. Refer to the Troubleshooting Switch Port
and Interface Problems document, available at this URL:
http://www.cisco.com/warp/customer/473/53.shtml
• IP Address, Subnet Mask, Default Router—If you have assigned a static
IP address to the phone, you must manually enter settings for these options.
See the "Network Configuration Menu" section on page 4-7
If you are using DHCP, check the IP addresses distributed by your DHCP server.
Refer to the Understanding and Troubleshooting DHCP in Catalyst Switch or
Enterprise Networks document, available at this URL:
http://www.cisco.com/warp/customer/473/100.html#41
If you are using DNS to refer to the TFTP server or to
Cisco Unified Communications Manager, you must ensure that you have
specified a DNS server. Verify this setting by pressing the Settings button on the
phone, choosing Network Configuration, and scrolling to the DNS Server 1
option. You should also verify that there is a CNAME entry in the DNS server for
the TFTP server and for the Cisco Unified Communications Manager system.
You must also ensure that DNS is configured to do reverse look-ups.
Resolving Startup Problems
for
for instructions.
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