Brocade Communications Systems ICX 7250 series, Configuration Manual

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All these protocols provide routes to the IP route table. You can use one or more of these protocols, in any combination. The protocols
are disabled by default.
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 "IP Multicast Protocols" in the Brocade FastIron 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
Brocade FastIron 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 Brocade FastIron Security Configuration Guide .
IP configuration overview
Brocade FastIron Layer 3 Routing Configuration Guide
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