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Multicast and Port Channel

Fernando Soto
Level 1
Level 1

Hi. Sorry for my English

 

I have this switch: 

WS-C2960G-24TC-L

15.0(1)SE2

C2960-LANBASEK9-M

 

 

I am injecting  multicast traffic to interface giga0/19 (vlan 110),
it come out to interface giga 0/11 , but it does not come out through the interface Port-channel1,  

 

 

This is the configuration:

 

interface Port-channel1
switchport trunk allowed vlan 100,110
switchport mode trunk
switchport nonegotiate
load-interval 30
speed nonegotiate

 

interface GigabitEthernet0/19

switchport access vlan 110
switchport mode access
switchport nonegotiate
load-interval 30
no cdp enable
spanning-tree portfast

 

interface GigabitEthernet0/11
description HCU-200
switchport access vlan 110
switchport mode access
load-interval 30

 

no ip igmp snooping

 

 

SW1POP36#show interfaces gigabitEthernet 0/19
GigabitEthernet0/19 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0027.0c80.ac13 (bia 0027.0c80.ac13)
Description: TO-MK-TV-CARD
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:07, output hang never
Last clearing of "show interface" counters 00:01:08
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 5291000 bits/sec, 491 packets/sec
30 second output rate 386000 bits/sec, 34 packets/sec
33975 packets input, 45984501 bytes, 0 no buffer
Received 33965 broadcasts (33812 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 33812 multicast, 0 pause input
0 input packets with dribble condition detected
41 packets output, 2624 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
1 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

 

 

SW1POP36#show interfaces gigabitEthernet 0/11
GigabitEthernet0/11 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0027.0c80.ac0b (bia 0027.0c80.ac0b)
Description: HCU-200
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 13/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:02:31
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 0 bits/sec, 0 packets/sec
30 second output rate 5414000 bits/sec, 500 packets/sec
64 packets input, 4096 bytes, 0 no buffer
Received 64 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
75421 packets output, 102094892 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SW1POP36#

 

 

 

Port-channel1 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 0027.0c80.ac15 (bia 0027.0c80.ac15)
Description: ARSAT-IN
MTU 1500 bytes, BW 2000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 44/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is force-up, media type is unknown
input flow-control is off, output flow-control is unsupported
Members in this channel: Gi0/21 Gi0/22
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters 00:03:03
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 352504000 bits/sec, 34434 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
6757074 packets input, 8727505868 bytes, 0 no buffer
Received 264915 broadcasts (264886 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 264886 multicast, 0 pause input
0 input packets with dribble condition detected
164 packets output, 15214 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SW1POP36#

1 Reply 1

Giuseppe Larosa
Hall of Fame
Hall of Fame

Hello Fernando,

your switch is in End of Support since July 2017

see

https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-2960-series-switches/end_of_life_c51-674040.html

 

With igmp snooping disabled check the show interface of member links gi0/21 and gi0/22

 

Hope to help

Giuseppe

 

Review Cisco Networking for a $25 gift card