Specifications

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Cisco AS5x00 Case Study for Basic IP Modem Services
11/24/1999
Section 2 Commissioning the Cisco AS5300 Hardware
Enabling IP Basic Setup
Task 6. Enabling IP Basic Setup
Fine tune the IP routing functions and domain-name services for EXEC shell users.
Step 1
Optimize IP routing functions in global configuration mode:
ip subnet-zero
no ip source-route
ip classless
Table 2-9 describes the previous commands.
Step 2
In global configuration mode, enter domain-name service commands to support EXEC shell users:
ip domain-lookup
ip host dirt 172.22.100.9
ip domain-name mauionions.com
ip name-server 172.22.11.10
ip name-server 172.22.11.11
Table 2-10 describes the previous commands.
Table 2-9 IP Routing Commands
Command Purpose
ip subnet-zero
Specifies that 172.22.0.0 is a legal subnet.
no ip source-route
Tightens security by ensuring that IP-header packets
cannot define their own paths through the network
access server (NAS).
ip classless
Ensures that all unknown subnets use the default route.
Table 2-10 Domain-Name Commands
Command Purpose
ip domain-lookup
Enables IP domain-name lookups.
ip host dirt 172.22.100.9
Creates a local name-to-address map. When the NAS is not
entered in a DNS server, this map is useful.
ip domain-name mauionions.com
Tells the NAS how to qualify DNS lookups. In this example,
mauonions.com is appended to the end of each looked-up name.
ip name-server 172.22.11.10
ip name-server 172.22.12.11
Specifies the primary and secondary name servers. The ip
name-server command is used for mapping names to IP
addresses.