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16 IP SERVICES
This chapter describes how to configure Domain Name Service (DNS) on
this switch. For information on DHCP snooping which is included in this
folder, see "DHCP Snooping" on page 409.
This chapter provides information on the following IP services, including:
◆ DNS – Configures default domain names, identifies servers to use for
dynamic lookup, and shows how to configure static entries.
◆ DHCP Client – Specifies the DHCP client identifier for an interface.
◆ DHCP Relay Option 82 – Enables DHCP relay service for attached host
devices, including DHCP option 82 information.
◆ PPPoE Intermediate Agent – Configures PPPoE Intermediate Agent
(PPPoE IA) relay parameters required for passing authentication
messages between a client and broadband remote access servers.
DOMAIN NAME SERVICE
DNS service on this switch allows host names to be mapped to IP
addresses using static table entries or by redirection to other name servers
on the network. When a client device designates this switch as a DNS
server, the client will attempt to resolve host names into IP addresses by
forwarding DNS queries to the switch, and waiting for a response.
You can manually configure entries in the DNS table used for mapping
domain names to IP addresses, configure default domain names, or specify
one or more name servers to use for domain name to address translation.
CONFIGURING
GENERAL DNS
S
ERVICE PARAMETERS
Use the IP Service > DNS - General (Configure Global) page to enable
domain lookup and set the default domain name.
CLI REFERENCES
â—† "ip domain-lookup" on page 1366
â—† "ip domain-name" on page 1367
COMMAND USAGE
â—† To enable DNS service on this switch, enable domain lookup status, and
configure one or more name servers (see "Configuring a List of Name
Servers" on page 590).
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