Re: Multicast and WS-SUP32-GE-3B

bmiguez · ‎01-13-2011

Hello,

I have a Catalyst 6500_SUP32 with the following modules:

6500_SUP32#show module
Mod Ports Card Type                              Model              Serial No.
--- ----- -------------------------------------- ------------------ -----------
1   48 48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-TX    aaaaaaaaaaa
5    9 Supervisor Engine 32 8GE (Active)      WS-SUP32-GE-3B     bbbbbbbbbbb
6    9 Supervisor Engine 32 8GE (Hot)         WS-SUP32-GE-3B     ccccccccccc

Mod Sub-Module                  Model              Serial       Hw     Status
---- --------------------------- ------------------ ----------- ------- -------
5 Policy Feature Card 3       WS-F6K-PFC3B       ddddddddddd 2.3    Ok
5 Cat6k MSFC 2A daughterboard WS-F6K-MSFC2A      eeeeeeeeeee 4.0    Ok
6 Policy Feature Card 3       WS-F6K-PFC3B       fffffffffff 2.3    Ok
6 Cat6k MSFC 2A daughterboard WS-F6K-MSFC2A      ggggggggggg 4.0    Ok

- When I try to send a multicast stream through 2 ports configured on Vlan 200 (these ports are the only that are configured on this vlan), it doesn´t works.The configuration of ports is:
interface GigabitEthernet6/1
switchport
switchport access vlan 200
switchport mode access
load-interval 30
speed nonegotiate
end

interface GigabitEthernet6/2
switchport
switchport access vlan 200
switchport mode access
load-interval 30
speed nonegotiate
end

6500_SUP32#sh int gi6/1
GigabitEthernet6/1 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 001c.5834.acdc (bia 001c.5834.acdc)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 104/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is LH
input flow-control is off, output flow-control is on
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:15, output hang never
Last clearing of "show interface" counters 3d17h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 410198000 bits/sec, 37648 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
     29848173 packets input, 40652574233 bytes, 0 no buffer
     Received 29847515 broadcasts (29847515 multicasts)
     89 runts, 0 giants, 0 throttles
     858 input errors, 746 CRC, 659 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     5159 packets output, 6642310 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     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

6500_SUP32#sh int gi6/2
GigabitEthernet6/2 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 001c.5834.acdd (bia 001c.5834.acdd)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 132/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is LH
input flow-control is off, output flow-control is on
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:38, output hang never
Last clearing of "show interface" counters 3d17h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 518714000 bits/sec, 47608 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
     23136224 packets input, 31508399163 bytes, 0 no buffer
     Received 23133286 broadcasts (23133286 multicasts)
     628 runts, 0 giants, 0 throttles
     4519 input errors, 3569 CRC, 2942 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     3076 packets output, 3830662 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     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

- When I try to send the same multicast stream between 2 ports (ports giga 2/13 and giga 2/14) with exactly the same configuration on a 6500 with the following modules:
6500_SUP720#show module
Mod Ports Card Type                              Model              Serial No.
--- ----- -------------------------------------- ------------------ -----------
1   24 CEF720 24 port 1000mb SFP              WS-X6724-SFP       hhhhhhhhhhh
2   24 CEF720 24 port 1000mb SFP              WS-X6724-SFP       iiiiiiiiiii
5    2 Supervisor Engine 720 (Active)         WS-SUP720-3B       jjjjjjjjjjj

it works fine.

- The same for a 3750, it works without the need of adding new configuration commands.

- The questions are:

1. Why this does not work on WS-SUP32-GE-3B? (Architecture of this module???)
2. Do I need to configure some feature to get it works? I will configure the "ip igmp snooping querier" in the next test, but, Do I need add some more command?

Many thanks in advance.

Benito M.

Amit Singh · ‎01-13-2011

Hi Benito,

Could please paste the output of "show ip igmp snooping vlan 200" from the SUP 32 side.

If IGMP snooping or PIM is not enabled on the vlan, you might see this behaviour. You can either enable " ip pim sparse-dense mode" under the vlan 200 interface or just configure the " ip IGMP snooping querier " on the switch to work this out. You dont need any other config command as such.

Cheers,

-amit singh

bmiguez · ‎01-13-2011

Hi Amit,

Thank you very much for your fast answer.

I have no configured an interface vlan 200 (SVI), I only have a vlan 200 (level 2).

The commands are:

6500_SUP32#show ip igmp snooping vlan ?
% Unrecognized command
6500_SUP32#show ip igmp snooping ?
explicit-tracking IGMPv3 Explicit tracking database
filter             IGMP Filtering Information
mrouter            Show routers beyond a port
rate-limit         IGMP messages incoming rate
statistics         IGMPv3 channel statistics

6500_SUP32#show ip igmp snooping ?
explicit-tracking IGMPv3 Explicit tracking database
filter             IGMP Filtering Information
mrouter            Show routers beyond a port
rate-limit         IGMP messages incoming rate
statistics         IGMPv3 channel statistics

6500_SUP32#show ip igmp snooping expl
6500_SUP32#show ip igmp snooping explicit-tracking ?
detail Counter details
vlan Vlan keyword
| Output modifiers

6500_SUP32#show ip igmp snooping explicit-tracking vlan ?
<1-4094> Vlan ID to examine

6500_SUP32#show ip igmp snooping explicit-tracking vlan 200

Source/Group Interface Reporter Filter_mode
---------------------------------------------------------------------------

6500_SUP32#show ip igmp snooping filter ?
interface IGMP filter interface information

6500_SUP32#show ip igmp snooping filter interface ?
GigabitEthernet GigabitEthernet IEEE 802.3z
Port-channel Ethernet Channel of interfaces
Vlan Catalyst Vlans

6500_SUP32#show ip igmp snooping filter interface vlan ?
<1-4094> Vlan interface number

6500_SUP32#show ip igmp snooping filter interface vlan 200 ?
% Unrecognized command
6500_SUP32#show ip igmp snooping filter interface vlan ?
<1-4094> Vlan interface number

6500_SUP32#show ip igmp snooping filter interface vlan 200 ?
% Unrecognized command
6500_SUP32#show ip igmp snooping filter interface ?
GigabitEthernet GigabitEthernet IEEE 802.3z
Port-channel     Ethernet Channel of interfaces
Vlan             Catalyst Vlans

6500_SUP32#show ip igmp snooping filter interface vlan ?
<1-4094> Vlan interface number

6500_SUP32#show ip igmp snooping filter interface vlan 200 ?
% Unrecognized command
6500_SUP32#show ip igmp snooping ?
explicit-tracking IGMPv3 Explicit tracking database
filter             IGMP Filtering Information
mrouter            Show routers beyond a port
rate-limit         IGMP messages incoming rate
statistics         IGMPv3 channel statistics

6500_SUP32#show ip igmp snooping statis
6500_SUP32#show ip igmp snooping statistics ?
interface Interface specific IGMPv3 channel statistics
| Output modifiers

6500_SUP32#show ip igmp snooping statistics

6500_SUP32#show ip igmp snooping statistics ?
interface Interface specific IGMPv3 channel statistics
| Output modifiers

6500_SUP32#show ip igmp snooping statistics interface ?
Async              Async interface
Auto-Template      Auto-Template interface
CTunnel            CTunnel interface
Dialer             Dialer interface
EsconPhy           ESCON interface
Filter             Filter interface
Filtergroup        Filter Group interface
GigabitEthernet    GigabitEthernet IEEE 802.3z
LongReachEthernet Long-Reach Ethernet interface
Loopback           Loopback interface
MFR                Multilink Frame Relay bundle interface
Multilink          Multilink-group interface
Null               Null interface
Port-channel       Ethernet Channel of interfaces
Portgroup          Portgroup interface
Pos-channel        POS Channel of interfaces
SYSCLOCK           Telecom-Bus Clock Controller
Tunnel             Tunnel interface
Vif                PGM Multicast Host interface
Virtual-Template   Virtual Template interface
Virtual-TokenRing Virtual TokenRing
Vlan               Catalyst Vlans
fcpa               Fiber Channel
voaBypassIn        VOA-Bypass-In interface
voaBypassOut       VOA-Bypass-Out interface
voaFilterIn        VOA-Filter-In interface
voaFilterOut       VOA-Filter-Out interface
voaIn              VOA-In interface
voaOut             VOA-Out interface
|                  Output modifiers

6500_SUP32#show ip igmp snooping statistics interface vlan ?
<1-4094> Vlan interface number

6500_SUP32#show ip igmp snooping statistics interface vlan 200 ?
% Unrecognized command

Please, let me know if you need the output of some other command.

Regards,

Benito.

Amit Singh · ‎01-13-2011

Hi Benoit,

Sorry, I thought that you had the SVI configured for the vlan. If its a pure L2 network, then " IGMP querier" the solution for you.

Please see the problem and the solution that you are facing below.

http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008059a9df.shtml

Cheers,

-amit singh

bmiguez · ‎01-13-2011

Hi Amit,

Thank you very much for your answer.

I think that "igmp snooping querier" must be enabled in Global configuration mode, but in this device is not possible:

6500_SUP32(config)#ip igmp ?
immediate-leave Leave groups immediately without sending last member query, use for one host network only
limit            IGMP limit
snooping         Global IGMP Snooping enable for Catalyst Vlans
ssm-map          SSM mapping commands
vrf              Select VPN Routing/Forwarding instance

6500_SUP32(config)#ip igmp snooping ?
cgmp                  configure CGMP option
l2-entry-limit        limit on the l2 entry that can be installed by IGMP snooping
limit                 Configure IGMP Snooping limits
source-only-learning source-only gce entries

Neither "igmp snooping querier" nor "static mrouter port" can be enabled, so, I think I must configure a SVI for vlan 200, asign an IP and configure "ip pim sparse-dense-mode" on it...do you agree?

Moreover, these features are needed when we have 2 or more switches, but I only have one switch, I don´t understand because of this...(Architecture of Sup32???)

Thank you very much.

Regards,

Benito.

Amit Singh · ‎01-13-2011

Benoit,

Here is what I want you to try :

1. Try enabling IGMP snooping globally. ip igmp snooping

2. Create a VLAN interface for vlan 200 and then configure IGMP snooping querier under that. Except for the global enable command, all IGMP snooping commands are supported only on VLAN interfaces.You need to configure an IP address for this vlan, it doesnot work without the IP address.

3. If it doesnot work then try configuring the IP PIM sprse-dense mode under the SVI.

4. You can also try configuring static multicast receive if the above two steps doesnot work.

Please see the link below to understand the IGMP snooping on the Cat6500.

HTH,

-amit singh

bmiguez · ‎01-18-2011

Hi Amit,

Thank you very much for your answer.

In the second option, must I configure an IP on the same Network that the source address of the multicast flow?

Regards,

Benito.

Amit Singh · ‎01-18-2011

Yes, IP address on the VLAN 200 interface in your case.

-as

bmiguez · ‎01-20-2011

Hi Amit,

I have just done the tests.

1. I first did enable "ip igmp snooping": it didn´t work.

2. I did configure a SVI for vlan 200 with IP and mask. The configuration was:

interface Vlan200
ip address x.x.x.x x.x.x.x
ip igmp snooping querier

end

but it didn´t work.

3. I did configure:

interface Vlan200
ip address x.x.x.x x.x.x.x
ip igmp snooping mrouter interface GigabitEthernet6/1
ip igmp snooping mrouter interface GigabitEthernet6/2
end

With this configuration, it works fine.

I don´t understand why we must configure an "mrouter" (I understand in case of ports located on different switches...), because those ports are in the same switch and in the same module... Could it be due to the Architecture of the SUP32?

Thank you very much for your help.

Regards,

Benito.

will · ‎04-27-2013

you need to configure this odd L3 interface due to architecture of 6500 switch and sup module. seems like a defect to me, but that's what TAC told me. There are workaround, such as enable IGMP on firewall interface if firewall has an L3 interface on this vlan. or enable IGMP on connected router. this will facilitate the IGMP snooping. here is a document that discuss IGMP among two catalyst switches. basically, i think of 6500 switchports as all min-switches in regard to setup of IGMP snooping,. in other words, you need to adhere to this document, thinking catalyst has a "switch" on each port in its fabric.

http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008059a9df.shtml