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 172.0.17.32, which is injecting traffic in the group 239.234.115.12, 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 172.17.0.232; however, I cannot not connect to that multicast group. I have issued the following commands
SWITCH_AREA_1#show ip mroute
(*, 239.234.115.12), 22:16:49/stopped, RP 0.0.0.0, flags: DP
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list: Null
(172.17.0.32, 239.234.115.12), 22:16:49/00:02:57, flags: PT
Incoming interface: Vlan1, RPF nbr 0.0.0.0
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 239.234.115.12 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: 239.234.115.12, Source count: 1, Packets forwarded: 8067,
Source: 172.17.0.32/32, Forwarding: 8067/1/1/0, Other: 8/0/0
I have following Cisco multicast troubleshooting http://www.cisco.com/en/US/tech/tk828/technologies_tech_note09186a0080094b55.shtml#noforwardrpffail, 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
224.0.1.40 Vlan1 1d19h 00:01:13 172.17.0.100
224.0.1.76 Vlan1 1d19h 00:01:13 172.17.0.129
More info:
Vlan1 is up, line protocol is up
Hardware is EtherSVI, address is -----
Internet address is 172.17.0.100/24
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 172.17.0.100/24
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 172.17.0.100 (this system)
IGMP querying router is 172.17.0.100 (this system)
Multicast groups joined by this system (number of users):
224.0.1.40(1)
Thanks in advance,
Regars
