Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 28)

10 Brocade ICX 6650 Layer 3 Routing Configuration Guide
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IP configuration overview
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 the Brocade ICX 6650 IP Multicast Configuration Guide. .
NOTE
Brocade Layer 2 Switches support IGMP and can forward IP multicast packets. For more information
see, Chapter 2, “IP Multicast Reduction” in the Brocade ICX 6650 IP Mulitcast 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.
For configuration information, refer to the Chapter 9, “VRRP and VRRP-E” .
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, see the Chapter, “Rule-Based IP ACLs” in the Brocade ICX 6650
Security Configuration Guide.