Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 760)

730 Multi-Service IronWare Switching Configuration Guide
53-1003036-02
Configuring IP parameters
19
Enter the MAC address in the following format: HHHH.HHHH.HHHH
NOTE
You must save the configuration and reload the software to place the change into effect.
Deleting an IP address
To delete an IP address, enter a command such as the following.
Brocade(config-if-e1000-1/1)# no ip address 10.1.2.1
This command deletes IP address 10.1.2.1. You do not need to enter the subnet mask.
To delete all IP addresses from an interface, enter the following command.
Brocade(config-if-e1000-1/1)# no ip address *
Syntax: no ip address ip-addr
IP Unnumbered Interfaces
The IP Unnumbered Interfaces feature saves IPv4 address space by allowing unnumbered
interfaces to inherit the IP address of a donor interface, thus allowing all ports to share the same
subnet. This feature not only preserves IP addresses, but also reduces the IP routing table size.
This feature also provides ARP suppression (reducing the number of ARP requests sent to hosts) on
unnumbered interfaces, thus increasing the number of hosts that are supported under the same
subnet.
• The donor interface is the interface with an IP address configured on it.
• The unnumbered interface is the interface with no IP address configured on it. The
unnumbered interface inherits the IP address of the donor interface.
For example, consider a DSLAM deployment scenario with multiple users connected to a Brocade
device (refer to
Figure 191 ). Instead of configuring IP addresses for every VE on the Brocade
device, you can designate one VE as the donor interface and configure all the other VEs to inherit
the IP address of the donor VE interface.
FIGURE 191 IP Unnumbered Interfaces feature