User's Manual

379
To set the maximum retransmissions of the Re-Detect packets, run the following command.
The ARP entries (to be tagged with G), which the routing entry gateway depends on, require being re-detected
at their aging so that the promptness and correctness of the hardware subnet routing can be guaranteed. The
greater the retransmission times, the more likely to re-detect.
Command Purpose
arp max-gw-retries number
Sets the maximum retransmissions of the Re-
Detect packets. The default is 3.
Set re-detection when ARP entry is aging.
By default only ARP depends on routing entry has re-detection when aging. After enable this command, all
ARP entries will adopt aging re-detection mechanism.
Command Purpose
arp retry-allarp
Sets re-detection when the ARP entry is aging.
(2) Mapping Host Name to IP Address
Any IP address can correspond to a host name. The system has saved a mapping (host name to address)
cache which can be telneted or pinged.
To designate a mapping from host name to address, run the following commands in global mode:
Command Purpose
ip host name address
Statically maps the host name to the IP address.
51.3.4 Configuring Routing Process
You can configure one or multiple routing protocols according to your actual network requirements. The routing
protocol provides information about the network topology. The details about configuring IP routing protocols
such as BGP, RIP and OSPF are shown in the following sections.
51.3.5 Configuring Broadcast Packet Process
The destination addresses of the broadcast message are all the hosts on a physical network. The host can
identify the broadcast message through special address. Some protocols, including some important Internet
protocols, frequently use the broadcast message. One primary task of the IP network administrator is to control
the broadcast message. The system supports the directed broadcast, that is, the broadcast of designated
network. The system does not support the broadcast of all subnets in a network.
Some early-stage IP’s do not adopt the current broadcast address standard. The broadcast address adopted
by these IPs is represented completely by the number “0”, not "1" completely. The system can simultaneously