Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 29)

IP multicast protocols
Brocade Layer 3 switches also support the following Internet Group Membership Protocol (IGMP) based
IP multicast protocols:
• Protocol Independent Multicast - Dense mode (PIM-DM)
• Protocol Independent Multicast - Sparse mode (PIM-SM)
For configuration information, refer to chapter "IP Multicast Protocols" in the FastIron Ethernet Switch IP
Multicast Configuration Guide .
NOTE
Brocade Layer 3 switches support IGMP and can forward IP multicast packets. Refer to the "IP
Multicast Traffic Reduction" chapter in the FastIron Ethernet Switch IP Multicast Configuration Guide .
IP interface redundancy protocols
You can configure a Brocade Layer 3 switch to back up an IP interface configured on another Brocade
Layer 3 switch. If the link for the backed up interface becomes unavailable, the other Layer 3 switch can
continue service for the interface. This feature is especially useful for providing a backup to a network
default gateway.
Brocade Layer 3 switches support the following IP interface redundancy protocols:
• Virtual Router Redundancy Protocol (VRRP) - A standard router redundancy protocol based on RFC
2338. You can use VRRP to configure Brocade Layer 3 switches and third-party routers to back up
IP interfaces on other Brocade Layer 3 switches or third-party routers.
• Virtual Router Redundancy Protocol Extended (VRRP-E) - A Brocade extension to standard VRRP
that adds additional features and overcomes limitations in standard VRRP. You can use VRRP-E
only on Brocade Layer 3 switches.
ACLs and IP access policies
Brocade Layer 3 switches provide two mechanisms for filtering IP traffic:
• Access Control Lists (ACLs)
• IP access policies
Both methods allow you to filter packets based on Layer 3 and Layer 4 source and destination
information.
ACLs also provide great flexibility by providing the input to various other filtering mechanisms such as
route maps, which are used by BGP4.
IP access policies allow you to configure QoS based on sessions (Layer 4 traffic flows).
Only one of these filtering mechanisms can be enabled on a Brocade device at a time. Brocade devices
can store forwarding information for both methods of filtering in the session table.
For configuration information, refer to the chapter "Rule-Based IP ACLs" in the FastIron Ethernet Switch
Security Configuration Guide .
IP multicast protocols
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