Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 206)

188 Brocade ICX 6650 Layer 3 Routing Configuration Guide
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Configuring OSPF
Brocade(config-if-1/1/5)#ip ospf database-filter all out
Brocade(config-if-1/1/5)#clear ip ospf all
The first command in this example blocks all outbound LSAs on the OSPF interface configured on
port 1/1/5. The second command resets OSPF and places the command into effect immediately.
Syntax: [no] ip ospf database-filter all out
To remove the filter, enter a command such as the following.
Brocade(config-if-1/1/5)#no ip ospf database-filter all out
Configuring an OSPF non-broadcast interface
Layer 3 switches support Non-Broadcast Multi-Access (NBMA) networks. This feature enables you
to configure an interface on a Brocade device to send OSPF traffic to its neighbor as unicast
packets rather than broadcast packets.
OSPF routers generally use broadcast packets to establish neighbor relationships and broadcast
route updates on Ethernet and virtual interfaces (VEs). In this release, as an alternative, you can
configure the Brocade device to use unicast packets for this purpose. This can be useful in
situations where multicast traffic is not feasible (for example when a firewall does not allow
multicast packets).
On a non-broadcast interface, the routers at the other end of this interface must also be configured
as non-broadcast and neighbor routers. There is no restriction on the number of routers sharing a
non-broadcast interface (for example, through a hub or switch).
NOTE
Only Ethernet interfaces or VEs can be configured as non-broadcast interfaces.
To configure an OSPF interface as a non-broadcast interface, enable the feature on a physical
interface or a VE, following the ip ospf area statement, and then specify the IP address of the
neighbor in the OSPF configuration. The non-broadcast interface configuration must be done on
the OSPF routers on both ends of the link.
For example, the following commands configure VE 20 as a non-broadcast interface.
Brocade(config)#int ve 20
Brocade(config-vif-20)#ip ospf area 0
Brocade(config-vif-20)#ip ospf network non-broadcast
Brocade(config-vif-20)#exit
Syntax: [no] ip ospf network non-broadcast
The following commands specify 10.1.20.1 as an OSPF neighbor address. The address specified
must be in the same subnet as a non-broadcast interface.
Brocade(config)#router ospf
Brocade(config-ospf-router)#neighbor 10.1.20.1
For example, to configure the feature in a network with three routers connected by a hub or switch,
each router must have the linking interface configured as a non-broadcast interface, and both of
the other routers must be specified as neighbors.
The output of the show ip ospf interface command has been enhanced to display information
about non-broadcast interfaces and neighbors that are configured in the same subnet.