Configuring Ethernet Settings; Configuring Dns Settings - Cisco TelePresence Administrator's Manual

In these deployments, the externally-facing LAN port has static NAT enabled in order to use both a private
and public IPv4 address; the internally facing LAN port does not have static NAT enabled and uses a single
IPv4 (or IPv6) address.
In such a deployment, traversal clients should be configured to use the internally-facing IP address of the
VCS Expressway.
To enable the use of a static NAT:
1. Ensure that the Dual Network Interfaces option key is installed.
2. For the externally-facing LAN port:
a. In the IPv4 address field, enter the VCS Expressway's private IP address.
b. Select an IPv4 static NAT mode of On.
c. In the IPv4 static NAT address field, enter the VCS Expressway's public IP address - this is the IP
address of the outside of the NAT.

Configuring Ethernet settings

The Ethernet page (System >
and the Ethernet switch to which it is connected. The speed must be set to the same value on both systems.
If you have the Dual network interfaces option enabled, you can configure the Ethernet speed separately for
each LAN port.
The default is Auto, which means that the two systems will auto-negotiate the appropriate speed.
Note: you are recommended to use the default value of Auto unless the switch to which you are connecting
is unable to auto-negotiate. A mismatch in Ethernet speed settings between the VCS and Ethernet switch
will at best result in packet loss; at worst it will make the system inaccessible for endpoints and system
administrators.

Configuring DNS settings

The DNS page (System >
DNS settings
Local host and domain name
The Local host name defines the DNS host name that this VCS is known by.
It must be unique for each peer in a cluster.
n
It is used to identify the VCS on a remote log server (a default name of "TANDBERG" is used if the Local
n
host name is not specified).
The Domain name is used when attempting to resolve unqualified server addresses (for example
ldapserver). It is appended to the unqualified server address before the query is sent to the DNS server. If
the server address is fully qualified (for example ldapserver.mydomain.com) or is in the form of an IP
address, the domain name is not appended to the server address before querying the DNS server.
It applies to the following configuration settings in the VCS:
Cisco VCS Administrator Guide (X7.2)
Ethernet) is used to configure the speed of the connection between the VCS
DNS) is used to configure the VCS's DNS servers and DNS settings.
Network and system settings
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