Configuration Guide User guide

948 FastIron Configuration Guide
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IP configuration overview
• Multicast protocols:
- Internet Group Membership Protocol (IGMP)
- Protocol Independent Multicast Dense (PIM-DM)
- Protocol Independent Multicast Sparse (PIM-SM)
- Distance Vector Multicast Routing Protocol (DVMRP)
• Router redundancy protocols:
- Virtual Router Redundancy Protocol Extended (VRRP-E)
- Virtual Router Redundancy Protocol (VRRP)
IP interfaces
NOTE
This section describes IPv4 addresses. For information about IPv6 addresses on FastIron X Series
devices, refer to “IPv6 addressing overview” on page 355. For information about IPv6 addresses on
all other FastIron devices, refer to “IPv6 addressing” on page 412.
Brocade Layer 3 Switches and Layer 2 Switches allow you to configure IP addresses. On Layer 3
Switches, IP addresses are associated with individual interfaces. On Layer 2 Switches, a single IP
address serves as the management access address for the entire device.
All Brocade Layer 3 Switches and Layer 2 Switches support configuration and display of IP
addresses in classical subnet format (for example: 192.168.1.1 255.255.255.0) and Classless
Interdomain Routing (CIDR) format (for example: 192.168.1.1/24). You can use either format when
configuring IP address information. IP addresses are displayed in classical subnet format by default
but you can change the display format to CIDR. Refer to “Changing the network mask display to
prefix format” on page 1065.
Layer 3 Switches
Brocade Layer 3 Switches allow you to configure IP addresses on the following types of interfaces:
• Ethernet ports
• Virtual routing interfaces (used by VLANs to route among one another)
• Loopback interfaces
Each IP address on a Layer 3 Switch must be in a different subnet. You can have only one interface
that is in a given subnet. For example, you can configure IP addresses 192.168.1.1/24 and
192.168.2.1/24 on the same Layer 3 Switch, but you cannot configure 192.168.1.1/24 and
192.168.1.2/24 on the same Layer 3 Switch.
You can configure multiple IP addresses on the same interface.
The number of IP addresses you can configure on an individual interface depends on the Layer 3
Switch model. To display the maximum number of IP addresses and other system parameters you
can configure on a Layer 3 Switch, refer to “Displaying and modifying system parameter default
settings” on page 578.
You can use any of the IP addresses you configure on the Layer 3 Switch for Telnet, Web
management, or SNMP access.