The following example displays the forwarding entries and interfaces in the MFIB. The router is configured for fast switching,
and it has a receiver joined to FF05::1 on Ethernet1/1 and a source (2001::1:1:20) sending on Ethernet1/2:
Device# show ipv6 mfib
IP Multicast Forwarding Information Base
Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts: Total/RPF failed/Other drops
Interface Flags: A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts: FS Pkt Count/PS Pkt Count
(*,FF00::/8) Flags: C
Forwarding: 0/0/0/0, Other: 0/0/0
Tunnel0 Flags: NS
(*,FF00::/15) Flags: D
Forwarding: 0/0/0/0, Other: 0/0/0
(*,FF05::1) Flags: C
Forwarding: 2/0/100/0, Other: 0/0/0
Tunnel0 Flags: A NS
Ethernet1/1 Flags: F NS
Pkts: 0/2
(2001::1:1:200,FF05::1) Flags:
Forwarding: 5/0/100/0, Other: 0/0/0
Ethernet1/2 Flags: A
Ethernet1/1 Flags: F NS
Pkts: 3/2
(*,FF10::/15) Flags: D
Forwarding: 0/0/0/0, Other: 0/0/0
The table below describes the significant fields shown in the display.
Table 14. show ipv6 mfib Field Descriptions
Field
|
Description
|
Entry Flags
|
Information about the entry.
|
Forwarding Counts
|
Statistics on the packets that are received from and forwarded to at least one interface.
|
Pkt Count/
|
Total number of packets received and forwarded since the creation of the multicast forwarding state to which this counter
applies.
|
Pkts per second/
|
Number of packets received and forwarded per second.
|
Avg Pkt Size/
|
Total number of bytes divided by the total number of packets for this multicast forwarding state. There is no direct display
for the total number of bytes. You can calculate the total number of bytes by multiplying the average packet size by the packet
count.
|
Kbits per second
|
Bytes per second divided by packets per second divided by 1000.
|
Other counts:
|
Statistics on the received packets. These counters include statistics about the packets received and forwarded and packets
received but not forwarded.
|
Interface Flags:
|
Information about the interface.
|
Interface Counts:
|
Interface statistics.
|
The following example shows forwarding entries and interfaces in the MFIB, with a group address of FF03:1::1 specified:
Device# show ipv6 mfib FF03:1::1
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A
flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per
second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts:FS Pkt Count/PS Pkt Count
*,FF03:1::1) Flags:C
Forwarding:0/0/0/0, Other:0/0/0
Tunnel1 Flags:A NS
GigabitEthernet5/0.25 Flags:F NS
Pkts:0/0
GigabitEthernet5/0.24 Flags:F NS
Pkts:0/0
(5002:1::2,FF03:1::1) Flags:
Forwarding:71505/0/50/0, Other:42/0/42
GigabitEthernet5/0 Flags:A
GigabitEthernet5/0.19 Flags:F NS
Pkts:239/24
GigabitEthernet5/0.20 Flags:F NS
Pkts:239/24
GigabitEthernet5/0.21 Flags:F NS
Pkts:238/24
.
.
.
GigabitEthernet5/0.16 Flags:F NS
Pkts:71628/24
The following example shows forwarding entries and interfaces in the MFIB, with a group address of FF03:1::1 and a source
address of 5002:1::2 specified:
Device# show ipv6 mfib FF03:1::1 5002:1::2
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts:FS Pkt Count/PS Pkt Count
(5002:1::2,FF03:1::1) Flags:
Forwarding:71505/0/50/0, Other:42/0/42
GigabitEthernet5/0 Flags:A
GigabitEthernet5/0.19 Flags:F NS
Pkts:239/24
GigabitEthernet5/0.20 Flags:F NS
Pkts:239/24
.
.
.
GigabitEthernet5/0.16 Flags:F NS
Pkts:71628/24
The following example shows forwarding entries and interfaces in the MFIB, with a group address of FF03:1::1 and a default
prefix of 128:
Device# show ipv6 mfib FF03:1::1/128
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts:FS Pkt Count/PS Pkt Count
(*,FF03:1::1) Flags:C
Forwarding:0/0/0/0, Other:0/0/0
Tunnel1 Flags:A NS
GigabitEthernet5/0.25 Flags:F NS
Pkts:0/0
GigabitEthernet5/0.24 Flags:F NS
Pkts:0/0
.
.
.
GigabitEthernet5/0.16 Flags:F NS
Pkts:0/0
The following example shows forwarding entries and interfaces in the MFIB, with a group address of FFE0 and a prefix of 15:
Device# show ipv6 mfib FFE0::/15
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts:FS Pkt Count/PS Pkt Count
(*,FFE0::/15) Flags:D
Forwarding:0/0/0/0, Other:0/0/0
The following example shows output of the show
ipv6
mfib command used with the verbose keyword. It shows forwarding entries and interfaces in the MFIB and additional information such as the MAC encapsulation
header and platform-specific information.
Device# show ipv6 mfib ff33::1:1 verbose
IP Multicast Forwarding Information Base
Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, K - Keepalive
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts: Total/RPF failed/Other drops
Platform per slot HW-Forwarding Counts: Pkt Count/Byte Count
Platform flags: HF - Forwarding entry,HB - Bridge entry,HD - NonRPF Drop entry,
NP - Not platform switchable,RPL - RPF-ltl linkage,
MCG - Metset change,ERR - S/w Error Flag,RTY - In RetryQ,
LP - L3 pending,MP - Met pending,AP - ACL pending
Interface Flags: A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts: Distributed FS Pkt Count/FS Pkt Count/PS Pkt Count
(10::2,FF33::1:1) Flags: K
RP Forwarding: 0/0/0/0, Other: 0/0/0
LC Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwd: 0/0/0/0, Other: NA/NA/NA
Slot 6: HW Forwarding: 0/0, Platform Flags: HF RPL
Slot 1: HW Forwarding: 0/0, Platform Flags: HF RPL
Vlan10 Flags: A
Vlan30 Flags: F NS
Pkts: 0/0/0 MAC: 33330001000100D0FFFE180086DD
The table below describes the fields shown in the display.
Table 15. show ipv6 mfib verbose Field Descriptions
Field
|
Description
|
Platform flags
|
Information about the platform.
|
Platform per slot HW-Forwarding Counts
|
Total number of packets per bytes forwarded.
|