Cisco Cisco Broadband Access Center Telco Wireless 3.7
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Cisco Broadband Access Center for Cable Administrator’s Guide
OL-2445-02
Chapter 1 Broadband Access Center for Cable Overview
KDC
Dynamic Host Configuration Protocol
The DHCP server automates the process of configuring IP addresses on TCP/IP networks. This protocol
performs many of the functions that a system administrator carries out when connecting a device to a
network. DHCP automatically manages network policy decisions and eliminates the need for manual
configuration. This in itself, adds flexibility, mobility, and control to networked device configurations.
performs many of the functions that a system administrator carries out when connecting a device to a
network. DHCP automatically manages network policy decisions and eliminates the need for manual
configuration. This in itself, adds flexibility, mobility, and control to networked device configurations.
DHCP Failover
DHCP failover allows pairs of DHCP servers to act in such a way that one can take over if the other stops
functioning. The server pairs are known as the primary and backup server. Under normal circumstances
the primary server performs all DHCP functions. Should the primary server be unavailable, the backup
server will take over. In this way, DHCP failover prevents loss of access to the DHCP service should the
primary fail.
functioning. The server pairs are known as the primary and backup server. Under normal circumstances
the primary server performs all DHCP functions. Should the primary server be unavailable, the backup
server will take over. In this way, DHCP failover prevents loss of access to the DHCP service should the
primary fail.
Domain Name System
The Domain Name System (DNS) is a server that contains information on hosts throughout the network,
including IP address hostnames and routing information and DNS uses them primarily to translate
between IP addresses and domain names. This conversion of names, such as www.cisco.com, to IP
addresses simplifies accessing Internet-based applications. The DNS directory service consists of:
including IP address hostnames and routing information and DNS uses them primarily to translate
between IP addresses and domain names. This conversion of names, such as www.cisco.com, to IP
addresses simplifies accessing Internet-based applications. The DNS directory service consists of:
•
DNS data
•
DNS servers
•
Internet protocols for fetching data from the servers
•
Dynamic DNS for voice provisioning.
KDC
The key distribution center (KDC) is a central authentication server used to authenticate MTAs and grant
security tickets to them.
security tickets to them.
Default KDC Properties
The KDC has several default properties that get populated, during BAC installation, into a
<BPR_HOME>/kdc/solaris/kdc.ini properties file. This file can be edited to change values as
operational requirements dictate. Once changes have been made however, you must restart the KDC
before any property file, key or certificate changes can take affect. The default properties are:
<BPR_HOME>/kdc/solaris/kdc.ini properties file. This file can be edited to change values as
operational requirements dictate. Once changes have been made however, you must restart the KDC
before any property file, key or certificate changes can take affect. The default properties are:
•
interface address—This is the IP address of the local ethernet interface that you want the KDC to
monitor for incoming Kerberos messages. For example:
monitor for incoming Kerberos messages. For example:
interface address = 10.10.10.1
•
FQDN—Identifies the fully qualified domain name on which the KDC is installed is located. For
example:
example:
FQDN = kdc.cisco.com