Configuration Guide User guide
FastIron Configuration Guide 955
53-1002494-02
Basic IP parameters and defaults – 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, Chapter 40, “Rule-Based IP ACLs”
Basic IP parameters and defaults – Layer 3 Switches
IP is enabled by default. The following IP-based protocols are all disabled by default:
• Routing protocols:
- Routing Information Protocol (RIP) – refer to Chapter 29, “RIP (IPv4)”
- Open Shortest Path First (OSPF) – refer to Chapter 31, “OSPF version 2 (IPv4)”
- Border Gateway Protocol version 4 (BGP4) – refer to Chapter 33, “BGP (IPv4)”
• Multicast protocols:
- Internet Group Membership Protocol (IGMP) – refer to “Global IP multicast parameters” on
page 1517
- Protocol Independent Multicast Dense (PIM-DM) – refer to “PIM Dense” on page 1522
- Protocol Independent Multicast Sparse (PIM-SM) – refer to “PIM Sparse” on page 1531
• Router redundancy protocols:
- Virtual Router Redundancy Protocol Extended (VRRP-E) – refer to Chapter 39, “VRRP and
VRRP-E”
- Virtual Router Redundancy Protocol (VRRP) – refer to Chapter 39, “VRRP and VRRP-E”
The following tables list the Layer 3 Switch IP parameters, their default values, and where to find
configuration information.
NOTE
For information about parameters in other protocols based on IP, such as RIP, OSPF, and so on, refer
to the configuration chapters for those protocols.