Layer 2 | 535
Conversely, if you want all multicast traffic to be flooded on all ports, but some specific traffic to be
restricted, use
mac-flood-list with the min-speed option, but without restrict-flooding configured. This
configuration restricts flooding only for traffic with destination multicast MAC addresses within the
multicast MAC address range you specify.
In Figure 24-9, flooding of unknown multicast traffic is restricted to 1G ports on VLAN100 using the
command
restrict-flooding. However, the command mac-flood-list allows traffic with MAC addresses
01:01:e8:00:00:00 to 01:01:e8:ff:ff:ff to be flooded on all ports regardless of link speed.
Figure 24-9. Restricting Layer 2 Multicast Flooding over Low Speed Ports
Far-end Failure Detection
Far-end Failure Detection is supported on platforms: e Z
Far-end Failure Detection (FEFD) is a protocol that senses remote data link errors in a network. It responds
by sending a unidirectional report that triggers an echoed response after a specified time interval. FEFD
can be enabled globally or locally on an interface basis. Disabling the global FEFD configuration does not
disable the interface configuration.
FTOS(conf)#$1:01:e8:00:00:00 ff:ff:ff:00:00:00 vlan 100-200,300
FTOS#show run | find mac-flood-list
mac-flood-list 01:01:e8:00:00:00 ff:ff:ff:00:00:00 vlan 100-200,300
[output omitted]
FTOS(conf)#interface vlan 100
FTOS(conf-if-vl-100)#restrict-flooding multicast min-speed 1000
FTOS(conf-if-vl-100)#show config
!
interface Vlan 100
restrict-flooding multicast min-speed 1000
no shutdown
FTOS(conf-if-vl-100)#
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