HP FlexNetwork MSR2003 User Manual

98
{ Dynamically obtains the DNS server address through DHCP or another autoconfiguration
mechanism.
5. Because the DNS entry ages out immediately upon creation, the host sends another DNS
request to the device to resolve the HTTP server domain name.
6. The device operates the same as a DNS proxy. For more information, see "DNS proxy."
7. After obtainin
g the IP address of the HTTP server, the host can access the HTTP server.
Without DNS spoofing, the device forwards the DNS requests from the host to the DNS server if it
cannot find a matching local DNS entry. However, the device cannot obtain the DNS server address,
because no dial-up connection is established. Therefore, the device cannot forward or answer the
requests from the client. DNS resolution fails, and the client cannot access the HTTP server.
DNS configuration task list
Tasks at a glance
Perform one of the following tasks:
• Configuring the IPv4 DNS client
• Configuring the IPv6 DNS client
(Optional.) Configuring the DNS proxy
(Optional.) Configuring DNS spoofing
(Optional.) Configuring network mode tracking for an output interface
(Optional.) Specifying the source interface for DNS packets
(Optional.) Configuring the DNS trusted interface
(Optional.) Setting the DSCP value for outgoing DNS packets
Configuring the IPv4 DNS client
Configuring static domain name resolution
Static domain name resolution allows applications such as Telnet to contact hosts by using host
names instead of IPv4 addresses.
Follow these guidelines when you configure static domain name resolution:
• On the public network or a VPN, each host name maps to only one IPv4 address. The most
recent configuration for a host name takes effect.
• You can configure the following:
{ IPv4 DNS entries for the public network and up to 1024 VPNs.
{ A maximum of 1024 IPv4 DNS entries for the public network or each VPN.
To configure static domain name resolution:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Configure a mapping between a
host name and an IPv4 address.
ip host
host-name
ip-address [
vpn-instance
vpn-instance-name ]
By default, no mapping between a
host name and an IPv4 address is
configured.

HP FlexNetwork MSR2003 Specifications

General

Brand	HP
Model	FlexNetwork MSR2003
Category	Network Router
Language	English