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Why haven't I got outgoing multicast traffic?

Hello, before starting just state that I'm newbie with multicast and maybe I'm asking some trivial thing...

I would like to multicast some video footage from some cameras which are plugged to catalyst 3750. In order to do so, I have a multicast camera with the IP, which is injecting traffic in the group, this camera is attached to a switch, which is just used to extend the number of available ports, being this switch plugged to the main Cisco3750 that really manages the multicas and that has only got one vlan where all the ports are included. On the other hand, I have a client that would be interesting on retrieving such a multicast video whose IP is; however, I cannot not connect to that multicast group. I have issued the following commands

SWITCH_AREA_1#show ip mroute

(*,, 22:16:49/stopped, RP, flags: DP

  Incoming interface: Null, RPF nbr

  Outgoing interface list: Null

(,, 22:16:49/00:02:57, flags: PT

  Incoming interface: Vlan1, RPF nbr

  Outgoing interface list: Null

-->Why  don't I have an outgoing interface? This parameter only changes if there is some destination getting the footage from the multicast source?

SWITCH_AREA_1#show ip mroute count

IP Multicast Statistics

7 routes using 3412 bytes of memory

4 groups, 0.75 average sources per group

Forwarding Counts: Pkt Count/Pkts(neg = Drops) per second/Avg

Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit e

Group:, Source count: 1, Packets forwarded: 8067,

  Source:, Forwarding: 8067/1/1/0, Other: 8/0/0

I have following Cisco multicast troubleshooting, and I have found this two odd points:

-The first one is that I have a huge number of bad hop count, does this implies that the TTL of the camera may be a wrong value? I have disabled the multicast ttl threshold in my vlan but the issue still persists...

SWITCH_AREA_1#show ip traffic

IP statistics:

  Rcvd:  2525565 total, 2429550 local destination

         0 format errors, 7 checksum errors, 61937 bad hop count

         0 unknown protocol, 24394 not a gateway

         0 security failures, 0 bad options, 383396 with options

  Opts:  0 end, 0 nop, 0 basic security, 0 loose source route

         0 timestamp, 0 extended security, 0 record route

         0 stream ID, 0 strict source route, 383396 alert, 0 cipso, 0 ump

         0 other

  Frags: 0 reassembled, 0 timeouts, 0 couldn't reassemble

         0 fragmented, 0 couldn't fragment

  Bcast: 461844 received, 434 sent

  Mcast: 51351 received, 12991 sent

  Sent:  1857363 generated, 300937 forwarded

  Drop:  133 encapsulation failed, 0 unresolved, 9 no adjacency

         9 no route, 0 unicast RPF, 0 forced drop

         0 options denied, 0 source IP address zero

ICMP statistics:

  Rcvd: 0 format errors, 0 checksum errors, 597627 redirects, 243 unreachable

        719230 echo, 130 echo reply, 0 mask requests, 0 mask replies, 0 quench

        0 parameter, 0 timestamp, 0 info request, 0 other

        0 irdp solicitations, 0 irdp advertisements

  Sent: 249993 redirects, 48 unreachable, 253 echo, 719230 echo reply

        0 mask requests, 0 mask replies, 0 quench, 0 timestamp

        0 info reply, 0 time exceeded, 0 parameter problem

        0 irdp solicitations, 0 irdp advertisements

TCP statistics:

  Rcvd: 599081 total, 0 checksum errors, 1803 no port

  Sent: 874283 total

UDP statistics:

  Rcvd: 461856 total, 0 checksum errors, 460418 no port

  Sent: 657 total, 0 forwarded broadcasts

BGP statistics:

  Rcvd: 0 total, 0 opens, 0 notifications, 0 updates

        0 keepalives, 0 route-refresh, 0 unrecognized

  Sent: 0 total, 0 opens, 0 notifications, 0 updates

        0 keepalives, 0 route-refresh

EIGRP-IPv4 statistics:

  Rcvd: 0 total

  Sent: 0 total

PIMv2 statistics: Sent/Received

  Total: 0/0, 0 checksum errors, 0 format errors

  Registers: 0/0 (0 non-rp, 0 non-sm-group), Register Stops: 0/0,  Hellos: 0/0

  Join/Prunes: 0/0, Asserts: 0/0, grafts: 0/0

  Bootstraps: 0/0, Candidate_RP_Advertisements: 0/0

  State-Refresh: 0/0

IGMP statistics: Sent/Received

  Total: 13017/51383, Format errors: 0/0, Checksum errors: 0/0

  Host Queries: 3863/0, Host Reports: 3850/51332, Host Leaves: 0/19

  DVMRP: 8/8, PIM: 5272/0

-Secondly, I have noticed  that the group created by the camera doesn't appear in the igmp groups, as depicted below

SWITCH_AREA_1#show ip igmp groups

IGMP Connected Group Membership

Group Address    Interface                Uptime    Expires   Last Reporter   Group Accounted       Vlan1                    1d19h     00:01:13       Vlan1                    1d19h     00:01:13

More info:

Vlan1 is up, line protocol is up

  Hardware is EtherSVI, address is -----

  Internet address is

  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive not supported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input 00:00:00, output 00:00:00, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 1000 bits/sec, 2 packets/sec

  5 minute output rate 1000 bits/sec, 1 packets/sec

     7526683 packets input, 541248299 bytes, 0 no buffer

     Received 0 broadcasts (30582 IP multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     1882562 packets output, 968966503 bytes, 0 underruns

     0 output errors, 0 interface resets

     0 output buffer failures, 0 output buffers swapped out

SWITCH_AREA_1#show ip igmp interface vlan 1

Vlan1 is up, line protocol is up

  Internet address is

  IGMP is enabled on interface

  Current IGMP host version is 2

  Current IGMP router version is 3

  IGMP query interval is 30 seconds

  IGMP configured query interval is 30 seconds

  IGMP querier timeout is 60 seconds

  IGMP configured querier timeout is 60 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: 6 joins, 3 leaves

  Multicast routing is enabled on interface

  Multicast TTL threshold is 0

  Multicast designated router (DR) is (this system)

  IGMP querying router is (this system)

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

Thanks in advance,


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