2-317
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
78-16201-01
Chapter2Cisco IOS Commands for the Catalyst 4500 Series Switches
show ip mfib
• Forwarding (F)—Used in conjunction with the A flag as described above. The set of forwarding
interfaces together form a multicast olist or output interface list.
• Signaling (S)—Set on an interface when a multicast routing protocol process in Cisco IOS needs to
be notified of ingress packets on that interface.
• Not Platform (NP) fast-switched—Used in conjunction with the F flag. A forwarding interface is
also marked as Not Platform fast-switched whenever that output interface cannot be fast-switched
by the platform hardware and requires software forwarding.
For example, the Catalyst 4006 switch with Supervisor EngineIII cannot switch tunnel interfaces in
hardware so these interfaces are marked with the NP flag. When an NP interface is associated with
a route, a copy of every ingress packet arriving on an Accepting interface is sent to the switch
software forwarding path for software replication and then forwarded to the NP interface.
Examples This example shows how to display all active MFIB routes:
Switch# show ip mfib
IP Multicast Forwarding Information Base
Entry Flags: C - Directly Connected, S - Signal,
IC - Internal Copy
Interface Flags: A - Accept, F - Forward, NS - Signal,
NP - Not platform switched
Packets: Fast/Partial/Slow Bytes: Fast/Partial/Slow:
(171.69.10.13, 224.0.1.40), flags (IC)
Packets: 2292/2292/0, Bytes: 518803/0/518803
Vlan7 (A)
Vlan100 (F NS)
Vlan105 (F NS)
(*, 224.0.1.60), flags ()
Packets: 2292/0/0, Bytes: 518803/0/0
Vlan7 (A NS)
(*, 224.0.1.75), flags ()
Vlan7 (A NS)
(10.34.2.92, 239.192.128.80), flags ()
Packets: 24579/100/0, 2113788/15000/0 bytes
Vlan7 (F NS)
Vlan100 (A)
(*, 239.193.100.70), flags ()
Packets: 1/0/0, 1500/0/0 bytes
Vlan7 (A)
Switch#
Related Commands clear ip mfib counters
To Next Page
Loading...
