02-01-2010 03:27 AM - edited 03-04-2019 07:22 AM
Dear All,
I am trying multicast video stream in my network but it is not working between Vlans. But its works fine in the same vlan.
Using VLC for video straming. Router, switch and pcs are connected as given in the below link.
http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a00800b0871.shtml
Router - Cisco 2821
Swicth - Cisco 2950
Pls guide me to make this works.
Regards,
Gopi
Solved! Go to Solution.
02-01-2010 06:38 AM
Hi,
The router is detecting IGMP hosts to join group 239.100.100.100.
and you have enable multiccast routing + pim on all router interfaces. what is the ttl value used by VLC to stream the multicast?
The (Sh ip mroute) on the router doesnt provide the desired result? So there is a problem.
Try to ping the group from the server , and do (sh ip mroute) on the router. statically join group 239.100.100.100 on the router interface
pls post back the result..
HTH
Mohamed
02-01-2010 03:29 AM
Hi,
Could you attach your current Netwok design in order to get better help?
HTH
Mohamed
02-01-2010 04:20 AM
Hi,
I am trying this set up in the set lab before putting in to the production environment. Pls find the attached document.
Router Configuration
ip multicast-routing
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/1.1
encapsulation dot1Q 1 native
ip address 172.16.1.1 255.255.0.0
!
interface GigabitEthernet0/1.17
encapsulation dot1Q 17
ip address 172.25.1.1 255.255.255.128
no ip redirects
ip pim dense-mode
!
interface GigabitEthernet0/1.241
encapsulation dot1Q 241
ip address 172.20.32.1 255.255.255.0
no ip redirects
ip pim dense-mode
!
Switch Configuration
interface FastEthernet0/1
switchport mode trunk
no ip address
speed 100
!
interface FastEthernet0/13
switchport access vlan 17
no ip address
duplex full
speed 100
!
interface FastEthernet0/15
switchport access vlan 241
no ip address
duplex full
speed 100
!
Switch Log
Version - cisco WS-C2950G-48-EI
SWITCH#show ip igmp snooping vlan 17
vlan 17
----------
IGMP snooping is globally enabled
IGMP snooping is enabled on this Vlan
IGMP snooping immediate-leave is disabled on this Vlan
IGMP snooping mrouter learn mode is pim-dvmrp on this Vlan
IGMP snooping is running in IGMP_ONLY mode on this Vlan
MDC3-68-DC-SPARE#show ip igmp snooping vlan 241
vlan 241
----------
IGMP snooping is globally enabled
IGMP snooping is enabled on this Vlan
IGMP snooping immediate-leave is disabled on this Vlan
IGMP snooping mrouter learn mode is pim-dvmrp on this Vlan
IGMP snooping is running in IGMP_ONLY mode on this Vlan
SWITCH#sh mac-address-table multicast
Vlan Mac Address Type Ports
---- ----------- ---- -----
17 0100.5e00.0128 IGMP Fa0/1
17 0100.5e64.6464 IGMP Fa0/1, Fa0/13
17 0100.5e7f.fffa IGMP Fa0/1, Fa0/13
241 0100.5e64.6464 IGMP Fa0/1
241 0100.5e7f.0203 IGMP Fa0/1, Fa0/15
Router Log
Version - Cisco 2821 Version 12.4(15)T9
ROUTER#show ip igmp groups
IGMP Connected Group Membership
Group Address Interface Uptime Expires Last Reporter Group Accounted
239.255.2.3 GigabitEthernet0/1.241 03:03:55 00:02:13 172.20.32.62
239.100.100.100 GigabitEthernet0/1.17 01:18:06 00:02:07 172.25.1.8
224.0.1.40 GigabitEthernet0/1.17 04:34:57 00:02:04 172.25.1.1
ROUTER#sh ip mroute 239.100.100.100
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report,
Z - Multicast Tunnel, z - MDT-data group sender,
Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 239.100.100.100), 01:18:48/00:02:29, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
GigabitEthernet0/1.17, Forward/Dense, 01:18:48/00:00:00
ROUTER#show ip igmp interface
GigabitEthernet0/1.17 is up, line protocol is up
Internet address is 172.25.1.1/25
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 22 joins, 19 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 172.25.1.1 (this system)
IGMP querying router is 172.25.1.1 (this system)
Multicast groups joined by this system (number of users):
224.0.1.40(1)
GigabitEthernet0/1.241 is up, line protocol is up
Internet address is 172.20.32.1/24
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 10 joins, 9 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 172.20.32.1 (this system)
IGMP querying router is 172.20.32.1 (this system)
No multicast groups joined by this system
Message was edited by: NSG_POLARIS
02-01-2010 03:42 AM
NSG_POLARIS wrote:
Dear All,
I am trying multicast video stream in my network but it is not working between Vlans. But its works fine in the same vlan.
Using VLC for video straming. Router, switch and pcs are connected as given in the below link.
http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a00800b0871.shtml
Router - Cisco 2821
Swicth - Cisco 2950
Pls guide me to make this works.
Regards,
Gopi
Gopi
Things to check
1) You have enabled "ip multicast-routing" on the 2821 router
2) Under each L3 interface on the router you have enabled PIM -
i) if pim-dense mode that is all you need
ii) if pim sparse-mode have you configured the RP manually or have you configured auto-rp
3) VLC - when you stream the data make sure you set the TTL to be more than 1. For each L3 hop add 1 to the ttl
4) optionally, you have enabled IGMP snooping on the 2950 switch
Jon
02-01-2010 04:34 AM
Pls check the config given in the previous post and advice me.
Regards,
Gopi
02-01-2010 06:38 AM
Hi,
The router is detecting IGMP hosts to join group 239.100.100.100.
and you have enable multiccast routing + pim on all router interfaces. what is the ttl value used by VLC to stream the multicast?
The (Sh ip mroute) on the router doesnt provide the desired result? So there is a problem.
Try to ping the group from the server , and do (sh ip mroute) on the router. statically join group 239.100.100.100 on the router interface
pls post back the result..
HTH
Mohamed
02-02-2010 03:32 AM
Thanks ! It is working now in my test bench.
The issue was with vlc player. It was not accepting the ttl value given through gui mode. It is accepting the ttl value only in the cmd mode.
Regards,
Gopi
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