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Multicast issues

We are having Muslticast issues with some routers and switches, we attempt to muslticast group 224.0.1.90 and the server on switch a or switch b will receive it but not both.

Router Configuration

sh ip mroute

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,

       V - RD & Vector, v - Vector

Outgoing interface flags: H - Hardware switched, A - Assert winner

Timers: Uptime/Expires

Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 239.255.255.253), 00:16:01/00:01:59, RP 172.21.12.67, flags: SP

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list: Null

(*, 239.255.255.250), 00:14:54/00:01:00, RP 172.21.12.67, flags: SJC

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI3, Forward/Sparse-Dense, 00:02:00/00:01:00

   BVI1, Forward/Sparse-Dense, 00:02:58/00:00:01

(*, 224.1.2.3), 00:08:06/00:00:50, RP 172.21.12.67, flags: SP

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list: Null

(*, 224.0.1.22), 1w5d/00:02:58, RP 172.21.12.67, flags: SJC

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI3, Forward/Sparse-Dense, 10:40:26/00:02:58

(*, 224.0.1.55), 00:29:45/00:01:12, RP 172.21.12.67, flags: SJC

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI3, Forward/Sparse-Dense, 00:01:47/00:01:12

(*, 224.0.1.39), 15w5d/stopped, RP 0.0.0.0, flags: D

Incoming interface: Null, RPF nbr 0.0.0.0

Outgoing interface list:

   Serial0/3/0.1, Forward/Sparse-Dense, 15w5d/00:00:00

(172.21.12.66, 224.0.1.39), 00:00:39/00:02:20, flags: PT

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list: Null

(*, 224.0.1.40), 15w5d/stopped, RP 0.0.0.0, flags: DCL

Incoming interface: Null, RPF nbr 0.0.0.0

Outgoing interface list:

   BVI1, Forward/Sparse-Dense, 15w5d/00:00:00

   Serial0/3/0.1, Forward/Sparse-Dense, 15w5d/00:00:00

(172.21.12.66, 224.0.1.40), 2w6d/00:02:51, flags: LT

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI1, Forward/Sparse-Dense, 2w6d/00:00:00

(172.21.13.2, 224.0.1.40), 2w6d/00:02:51, flags: LT

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI1, Forward/Sparse-Dense, 2w6d/00:00:00

(172.21.200.51, 224.0.1.40), 2w6d/00:02:51, flags: LT

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI1, Forward/Sparse-Dense, 2w6d/00:00:00

(172.21.12.67, 224.0.1.40), 2w6d/00:02:11, flags: LT

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI1, Forward/Sparse-Dense, 2w6d/00:00:00

(172.21.13.3, 224.0.1.40), 2w6d/00:02:11, flags: LT

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI1, Forward/Sparse-Dense, 2w6d/00:00:00

(172.21.200.52, 224.0.1.40), 15w5d/00:02:11, flags: LT

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI1, Forward/Sparse-Dense, 15w5d/00:00:00

(*, 224.0.1.92), 00:16:01/00:01:58, RP 172.21.12.67, flags: SP

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list: Null

(*, 224.0.1.88), 01:04:55/stopped, RP 172.21.12.67, flags: SJC

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI1, Forward/Sparse-Dense, 00:01:01/00:01:58

(172.21.12.76, 224.0.1.88), 00:16:45/00:00:40, flags: JT

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI1, Forward/Sparse-Dense, 00:01:02/00:01:58

(*, 224.0.1.91), 00:29:56/00:00:57, RP 172.21.12.67, flags: SJC

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI3, Forward/Sparse-Dense, 00:02:02/00:00:57

(*, 224.0.1.90), 00:28:02/00:02:58, RP 172.21.12.67, flags: SJC

Incoming interface: Serial0/3/0.1, RPF nbr 10.33.7.230

Outgoing interface list:

   BVI3, Forward/Sparse-Dense, 00:00:01/00:02:58

interface BVI1

ip pim sparse-dense-mode

end

interface BVI3

ip pim sparse-dense-mode

end

interface Serial0/3/0.1 point-to-point

ip pim sparse-dense-mode

end

sh run | in pim

ip pim sparse-dense-mode

ip pim sparse-dense-mode

ip pim sparse-dense-mode

ip pim autorp listener

show ip pim rp mapping

PIM Group-to-RP Mappings

Group(s) 224.0.0.0/4

RP 172.21.12.67 (--OMITTED--), v2v1

   Info source: 172.21.12.67 (--OMITTED--), elected via Auto-RP

         Uptime: 2w6d, expires: 00:02:33

sh ip igmp groups

Group Address   Interface             Uptime    Expires   Last Reporter   Group

239.255.255.250 BVI3                     00:00:59 00:02:00 10.1.180.239

239.255.255.250 BVI1                     00:01:56 00:01:03 10.1.180.43

224.0.1.22            BVI1                     00:03:00 now         10.1.180.6

224.0.1.22            BVI3                     09:31:25 00:02:58 10.1.180.243

224.0.1.55            BVI3                     00:01:49 00:01:10 10.1.180.235

224.0.1.40           BVI1                     2y22w     00:02:08 10.1.180.1

224.0.1.92            BVI3                     00:02:56 00:00:03 10.1.180.133

224.0.1.91            BVI3                     00:01:00 00:01:59 10.1.180.134

224.0.1.90            BVI3                     00:02:58 00:00:01 10.1.180.133

You can see from the above that 224.0.1.90 is about to expire.

sh ip igmp groups

Group Address   Interface             Uptime     Expires   Last Reporter   Group

239.255.255.250 BVI3                     00:01:01 00:01:58 10.1.180.239

239.255.255.250 BVI1                    00:01:58 00:01:01 10.1.180.43

224.0.1.22            BVI3                     09:31:27 00:02:57 10.1.180.243

224.0.1.55            BVI3                     00:01:51 00:01:08 10.1.180.235

224.0.1.40            BVI1                     2y22w     00:02:06 10.1.180.1

224.0.1.92            BVI3                     00:02:58 00:00:01 10.1.180.133

224.0.1.91            BVI3                     00:01:01 00:01:58 10.1.180.134

You can see from the above that 224.0.1.90 is no longer on the list; it will remain off the list until 224.0.1.55 expires than it will re establish the connection.

sh ip igmp groups

Group Address   Interface             Uptime     Expires   Last Reporter   Group

239.255.255.250 BVI3                     00:01:05 00:01:54 10.1.180.239

239.255.255.250 BVI1                     00:02:03 00:00:56 10.1.180.43

224.0.1.22            BVI3                     09:31:32 00:02:52 10.1.180.243

224.0.1.55            BVI3                     00:01:56 00:01:03 10.1.180.235

224.0.1.40            BVI1                    2y22w     00:02:59 10.1.180.1

224.0.1.91            BVI3                     00:01:06 00:01:53 10.1.180.134

You can see from the above that 224.0.1.92 is no longer on the list; we think it may have something to do with 239.255.255.253

sh ip igmp groups

Group Address   Interface             Uptime     Expires   Last Reporter   Group

239.255.255.253 BVI3                     00:00:03 00:02:56 10.1.180.140

239.255.255.250 BVI3                     00:02:01 00:00:58 10.1.180.239

239.255.255.250 BVI1                     00:02:58 00:00:01 10.1.180.43

224.0.1.22            BVI3                     09:36:27 00:02:58 10.1.180.243

224.0.1.55            BVI3                     00:02:56 00:00:03 10.1.180.235

224.0.1.40            BVI1                    2y22w     00:02:04 10.1.180.1

224.0.1.92            BVI3                     00:00:00 00:02:59 10.1.180.133

224.0.1.88            BVI1                     00:00:55 00:02:04 10.1.180.2

224.0.1.91            BVI3                     00:02:02 00:00:57 10.1.180.134

You can see from the above that 224.0.1.55 is about to expire and 239.255.255.253 came back also 224.0.1.92 is back on the out put

sh ip igmp groups

Group Address   Interface             Uptime     Expires   Last Reporter   Group

239.255.255.253 BVI3                     00:00:04 00:02:55 10.1.180.140

239.255.255.250 BVI3                     00:02:02 00:00:57 10.1.180.239

239.255.255.250 BVI1                     00:02:59 00:00:00 10.1.180.43

224.0.1.22            BVI3                    09:36:29 00:02:57 10.1.180.243

224.0.1.55            BVI3                     00:02:57 00:00:02 10.1.180.235

224.0.1.40            BVI1                     2y22w     00:02:59 10.1.180.1

224.0.1.92            BVI3                     00:00:01 00:02:58 10.1.180.133

224.0.1.88            BVI1                     00:00:56 00:02:03 10.1.180.2

224.0.1.91            BVI3                     00:02:03 00:00:56 10.1.180.134

224.0.1.90            BVI3                     00:00:00 00:02:59 10.1.180.133

You can see from the above that 224.0.1.55 timer is back and all Multicast IP’s are back online however we can not Multicast to the switches that the servers are sitting on.

Switch A Configuration

show arp (From Router)

Internet XXXXXXXXX           0   000c.297f.569c ARPA   BVI3

Internet XXXXXXXXX           1   000c.29fe.f81e ARPA   BVI3

sh mac address-table | in 000c.297f.569c

999   000c.297f.569c   DYNAMIC     Po1 ••ß this is on Switch B

sh mac address-table | in 000c.29fe.f81e

999   000c.29fe.f81e   DYNAMIC     Fa0/15

sh ip igmp filter

IGMP filter enabled

sh ip igmp snooping querier

Vlan     IP Address     IGMP Version       Port

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

997       10.1.180.1      v2                 Switch

999       10.1.180.129   v2                 Switch

sh ip igmp snooping group

Vlan     Group         Version     Port List

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

997       224.0.1.22                 Po1

997       224.0.1.88                 Fa0/15

999       224.0.1.22                 Po1

999       224.0.1.55                 Fa0/3

999       224.0.1.90                 Po1

999       224.0.1.91                 Po1

999       224.0.1.92                 Po1

999      239.255.255.250       Fa0/4

999      239.255.255.253       Po1

sh ip igmp snooping mrouter

Vlan   ports

----   -----

997   Fa0/1(dynamic)

999   Fa0/1(dynamic)

sh ip igmp snooping vlan 999

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 999:

--------

IGMP snooping                       : Enabled

Immediate leave                     : Disabled

Multicast router learning mode     : pim-dvmrp

Source only learning age timer     : 10

Last member query interval         : 1000

CGMP interoperability mode         : IGMP_ONLY

sh ip igmp snooping vlan 997

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 997:

--------

IGMP snooping                       : Enabled

Immediate leave                     : Disabled

Multicast router learning mode     : pim-dvmrp

Source only learning age timer     : 10

Last member query interval         : 1000

CGMP interoperability mode         : IGMP_ONLY

Switch B Configuration

show arp (From Router)

Internet XXXXXXXXX           0   000c.297f.569c ARPA   BVI3

Internet XXXXXXXXX           1   000c.29fe.f81e ARPA   BVI3

sh mac address-table | in 000c.297f.569c

999   000c.297f.569c   DYNAMIC     Fa0/15

sh mac address-table | in 000c.29fe.f81e

999   000c.29fe.f81e   DYNAMIC     Po1 ••ß this is on Switch A

sh ip igmp filter

IGMP filter enabled

sh ip igmp snooping group

Vlan     Group         Version     Port List

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

997       224.0.1.22     v2         Fa0/4

999       224.0.1.22     v2         Fa0/13, Fa0/17, Po1

999       224.0.1.90     v2         Fa0/15

999       224.0.1.91     v2         Fa0/15

999       224.0.1.92     v2         Fa0/15

999      239.255.255.253         Fa0/15

sh ip igmp snooping mrouter

Vlan   ports

----   -----

997   Po1(dynamic)

999   Po1(dynamic)

sh ip igmp snooping vlan 999

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 999:

--------

IGMP snooping                       : Enabled

Immediate leave                     : Disabled

Multicast router learning mode     : pim-dvmrp

Source only learning age timer     : 10

Last member query interval         : 1000

CGMP interoperability mode         : IGMP_ONLY

sh ip igmp snooping vlan 997

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 997:

--------

IGMP snooping                       : Enabled

Immediate leave                     : Disabled

Multicast router learning mode     : pim-dvmrp

Source only learning age timer    : 10

Last member query interval         : 1000

CGMP interoperability mode         : IGMP_ONLY

Everyone's tags (2)
3 REPLIES

Multicast issues

Hello, John.

Could you please draw the diagram of device (including multicast source, destination, RP, MA) interconnection. Please add to the diagrams all the IP-addresses we could see over "sh ip mroute" and "sh ip pim rp map".

Sorry, I didn't understand the problem. What is not working?

You wrote: "... however we can not Multicast to the switches that the servers are sitting on", but I thought server is supposed to be a multicast source... not the destination!

New Member

Re: Multicast issues

Servers are sitting on Switch A and Switch B on ports fa0/15; we need to send the multicast to both servers using 224.0.1.90 but only Switch A will receive the multicast. My biggest concern is why the Uptime is not incrementing on the sh ip igmp groups, the servers that are working on both Switches A and B the Uptime is incrementing, which is on another router example:

Group Address   Interface               Uptime   Expires   Last Reporter   Group Accounted

239.255.255.253 BVI3                     14w1d     00:02:41 10.0.219.140

239.255.255.250 BVI3                     2d22h     00:02:37 10.0.219.239

239.255.255.250 BVI1                     2w5d     00:02:28 10.0.219.53

224.0.1.22       BVI1                     14w1d     00:02:22 10.0.219.6

224.0.1.22       BVI3                     14w1d     00:02:38 10.0.219.240

224.0.1.55       BVI3                     5d06h     00:02:44 10.0.219.237

224.0.1.40       BVI1                     11w6d     00:02:23 10.0.219.1

224.0.1.92       BVI3                     14w1d     00:02:39 10.0.219.133

224.0.1.88       BVI1                     3d13h     00:02:29 10.0.219.2

224.0.1.91       BVI3                     14w1d     00:02:37 10.0.219.134

224.0.1.90       BVI3                     14w1d     00:02:40 10.0.219.134

New Member

Re: Multicast issues

Here is the network you requested

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