configuration multicast packet forwarding on 3750

teymur azimov · ‎03-04-2013

Hi dears

I have one server which run some application for wireless user. this server forward multicast packet to wireless user. server and wlc physically connect to cisco 3750 switch.i want the server forward the multicast packet to wireless users.

server access vlan 4.

wlc controller have 2 vlan: 90 and 110.

and wireless user some of vlan 90 and some of vlan 110.

i enable igmp snooping on wireless controller. and enable globally command but it is not working.which additional configuration i need on cisco switch.

Switch(config)# ip igmp snooping

please help me.

Edison Ortiz · ‎03-04-2013

Please refer to the documentation on how to configure 'multicast routing' on a 3750 switch:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_58_se/configuration/guide/swmcast.html

teymur azimov · ‎03-04-2013

Hi thank you reply for me. is it possibly provide me a certain configuration for my network topology.

thank again

Edison Ortiz · ‎03-04-2013

Switch(config)# ip multicast-routing distributed

Switch(config)# interface vlan 90

Switch(config-if)# ip pim sparse-dense-mode

Switch(config)# interface vlan 110

Switch(config-if)# ip pim sparse-dense-mode

teymur azimov · ‎03-04-2013

thank you very much

do i need ip igmp snooping command on global mode?

do i need some config on server port on sw?

Edison Ortiz · ‎03-04-2013

snooping is enabled by default on cisco switches.

no config is needed at the physical port facing the server since the config is applied to the vlan associated to the switchport.

john kennedy · ‎03-04-2013

Edison offered some great baseline configuration for multicast routing on one router, however, you should really learn a bit about multicast and IGMP before doing any sort of multicast deployment. It is one of those protocols that can just kill your network.

teymur azimov · ‎03-04-2013

İ did it but it is not working. i describe the topology.

i have some application running one pc which is forwarding multicast packet. and this pc connected wireless network with vlan 90. i want to vlan 90 and vlan 110 wireless users can use this application.

i enable igmp snooping on wireless controller.

int the same vlan which is vlan 90 the wireless user can used this application but the vlan 110 wireless user can not used.

i did as you wrote me but it is not help me.

can i do some config wlc?

what i need to do on swicth?

Alexander Maroukian · ‎03-04-2013

Hello Teymur,

You may find the following link about multicast and WLC interesting:

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00807cc10d.shtml

HTH,

Alex

teymur azimov · ‎03-05-2013

this guide is not help me.

i also do pim on AP vlan, mgmt vlan but the problem is same. the vlan 90 is working but vlan 110 is not working.

teymur azimov · ‎03-05-2013

CoreSwitch#show ip igmp snooping vlan 90

Global IGMP Snooping configuration:

-----------------------------------

IGMP snooping : Enabled

IGMPv3 snooping (minimal) : Enabled

Report suppression : Enabled

TCN solicit query : Disabled

TCN flood query count : 2

Last Member Query Interval : 1000

Vlan 90:

--------

IGMP snooping : Enabled

IGMPv2 immediate leave : Disabled

Explicit host tracking : Enabled

Multicast router learning mode : pim-dvmrp

Last Member Query Interval : 1000

CGMP interoperability mode : IGMP_ONLY

CoreSwitch#show ip igmp interface vlan 110

Vlan110 is up, line protocol is up

Internet address is 172.30.110.1/24

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: 2 joins, 0 leaves

Multicast routing is enabled on interface

Multicast TTL threshold is 0

Multicast designated router (DR) is 172.30.110.1 (this system)

IGMP querying router is 172.30.110.1 (this system)

Multicast groups joined by this system (number of users):

224.0.1.40(1) 239.255.1.1(1)

CoreSwitch#

CoreSwitch#show ip igmp snooping mrouter

Vlan ports

---- -----

90 Router

110 Router

125 Router

CoreSwitch#

CoreSwitch#show ip igmp membership

Flags: A - aggregate, T - tracked

L - Local, S - static, V - virtual, R - Reported through v3

I - v3lite, U - Urd, M - SSM (S,G) channel

1,2,3 - The version of IGMP, the group is in

Channel/Group-Flags:

/ - Filtering entry (Exclude mode (S,G), Include mode (G))

Reporter:

- last reporter if group is not explicitly tracked

/ - reporter in include mode, reporter in exclude

Channel/Group Reporter Uptime Exp. Flags Interface

*,239.255.1.1 172.30.110.1 00:18:05 02:04 2LA Vl110

*,239.255.1.1 172.30.125.217 00:18:44 01:59 2A Vl125

*,239.255.255.250 172.30.90.121 00:03:13 01:58 2A Vl90

*,239.255.255.246 172.30.90.121 00:00:43 02:16 2A Vl90

*,224.0.1.40 172.30.110.1 00:19:03 02:04 2LA Vl110

CoreSwitch#

CoreSwitch#show ip igmp groups

IGMP Connected Group Membership

Group Address Interface Uptime Expires Last Reporter

239.255.1.1 Vlan110 00:19:38 00:02:29 172.30.110.1

239.255.1.1 Vlan125 00:20:17 00:02:27 172.30.125.217

239.255.255.250 Vlan90 00:04:46 00:02:29 172.30.90.121

224.0.1.40 Vlan110 00:20:36 00:02:33 172.30.110.1

i configurated 239.255.1.1 on wlc.

and my confuguration on sw:

interface Vlan90

description Wireless

ip address 172.30.90.1 255.255.255.0

ip pim sparse-dense-mode

end

interface Vlan110(voip wireless)

ip address 172.30.110.1 255.255.255.0

ip pim sparse-dense-mode

ip igmp join-group 239.255.1.1

end

interface Vlan125 (AP vlan)

ip address 172.30.125.1 255.255.255.0

ip pim sparse-dense-mode

end

i could not solve the problem.

teymur azimov · ‎03-05-2013

CoreSwitch#ping 239.255.1.1

Type escape sequence to abort.

Sending 1, 100-byte ICMP Echos to 239.255.1.1, timeout is 2 seconds:

Reply to request 0 from 172.30.110.1, 9 ms

Reply to request 0 from 172.30.125.1, 9 ms

teymur azimov · ‎03-05-2013

is this configuration correct?

john kennedy · ‎03-05-2013

What is your wireless controller version?

teymur azimov · ‎03-05-2013

7.0