Deployment Guide

● When the recursive resolution is “broken,” the system withdraws the route.
● When the recursive resolution is satisfied, the system re-installs the route.
Configure Static Routes for the Management
Interface
When an IP address that a protocol uses and a static management route exists for the same prefix, the protocol route takes
precedence over the static management route.
To configure a static route for the management port, use the following command.
● Assign a static route to point to the management interface or forwarding router.
CONFIGURATION mode
management route ip-address mask {forwarding-router-address | ManagementEthernet slot/
port}
To view the configured static routes for the management port, use the show ip management-route command in EXEC
privilege mode.
Dell#show ip management-route
Destination Gateway State Route Source
----------- ------- ----- ------------
10.11.0.0/16 ManagementEthernet 0/0 Connected Connected
172.16.1.0/24 10.11.198.4 Active Static
Enabling Directed Broadcast
By default, the system drops directed broadcast packets destined for an interface. This default setting provides some protection
against denial of service (DoS) attacks.
To enable the switch to receive directed broadcasts, use the following command.
● Enable directed broadcast.
INTERFACE mode
ip directed-broadcast
To view the configuration, use the show config command in INTERFACE mode.
Resolution of Host Names
Domain name service (DNS) maps host names to IP addresses. This feature simplifies commands such as Telnet and FTP by
allowing you to enter a name instead of an IP address.
Dynamic resolution of host names is disabled by default. Unless you enable the feature, the system resolves only host names
entered into the host table with the ip host command.
In a dual stack setup, the system sends both A ( for IPv4 — RFC 1035) and AAAA ( for IPv6 — RFC 3596) record requests to a
DNS server even if you configure only the ip name-server command.
Name server, Domain name, and Domain list are VRF specific. The maximum number of Name servers and Domain lists per VRF
is six.
Enabling Dynamic Resolution of Host Names
By default, dynamic resolution of host names (DNS) is disabled.
To enable DNS, use the following commands.
● Enable dynamic resolution of host names.
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IPv4 Routing