Does anyone have experience with allowing multicast, specifically to support the use of the Robot Operating System (ROS)? I have created a new VAP / SSID that allows both broadcast and multicast, however, the ROS communication between two devices isn't working. Based on my troubleshooting it would appear the traffic is getting inspected by the controllers firewall but is ultimately allowed, I don't see any denied sessions, but something seems to be blocking the multicast.
Below is the output from a few commands I have run to verify traffic is flowing as expected.
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(MC2) [MDC] *#show datapath session table 10.126.16.4
Datapath Session Table Entries
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Flags: F - fast age, S - src NAT, N - dest NAT
D - deny, R - redirect, Y - no syn
H - high prio, P - set prio, T - set ToS
C - client, M - mirror, V - VOIP
Q - Real-Time Quality analysis
u - Upstream Real-Time Quality analysis
I - Deep inspect, U - Locally destined
E - Media Deep Inspect, G - media signal
r - Route Nexthop, h - High Value
A - Application Firewall Inspect
B - Permanent, O - Openflow
L - Log, o - Openflow config revision mismatched
Source IP or MAC Destination IP Prot SPort DPort Cntr Prio ToS Age Destination TAge Packets Bytes Flags CPU ID
----------------- --------------- ---- ----- ----- -------- ---- --- --- ----------- ---- ---------- ---------- --------------- -------
10.126.16.4 239.255.0.1 17 50900 8650 2/22 0 0 1 tunnel 5567 b 6 1448 FCA 19
10.126.16.4 224.0.0.22 2 2 2 0/0 6 48 0 tunnel 5567 1d 11 440 FCI 19
91.189.94.4 10.126.16.4 17 123 56728 0/0 0 18 0 tunnel 5567 4 1 76 F 22
10.126.16.4 239.255.0.1 17 38459 8650 2/12 0 0 0 tunnel 5567 1d 8 2048 FCA 19
10.126.16.4 91.189.94.4 17 56728 123 0/0 0 4 0 tunnel 5567 4 2 152 FC 19
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(MC2) [MDC] *#show datapath session table 10.126.16.4
Datapath Session Table Entries
------------------------------
Flags: F - fast age, S - src NAT, N - dest NAT
D - deny, R - redirect, Y - no syn
H - high prio, P - set prio, T - set ToS
C - client, M - mirror, V - VOIP
Q - Real-Time Quality analysis
u - Upstream Real-Time Quality analysis
I - Deep inspect, U - Locally destined
E - Media Deep Inspect, G - media signal
r - Route Nexthop, h - High Value
A - Application Firewall Inspect
B - Permanent, O - Openflow
L - Log, o - Openflow config revision mismatched
Source IP or MAC Destination IP Prot SPort DPort Cntr Prio ToS Age Destination TAge Packets Bytes Flags CPU ID
----------------- --------------- ---- ----- ----- -------- ---- --- --- ----------- ---- ---------- ---------- --------------- -------
10.126.16.4 10.126.16.6 17 34362 50140 0/0 0 0 0 tunnel 5567 b 41 16976 FC 19
10.126.16.6 10.126.16.4 17 50140 34362 0/0 0 0 0 tunnel 5567 b 0 0 FY 19
10.126.16.4 224.0.0.22 2 2 2 0/0 6 48 1 tunnel 5567 14 3 120 FCI 19
10.126.16.4 10.126.16.6 17 42174 44931 0/0 0 0 1 0/0/2 c 0 0 FY 18
10.126.16.6 10.126.16.4 17 44931 42174 0/0 0 0 0 0/0/2 c 41 14948 FC 18
10.126.16.4 239.255.0.1 17 34362 8650 2/25 0 0 1 tunnel 5567 14 8 2400 FCA 19
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(MC1) [MDC] *#show datapath session table 10.126.16.4
Datapath Session Table Entries
------------------------------
Flags: F - fast age, S - src NAT, N - dest NAT
D - deny, R - redirect, Y - no syn
H - high prio, P - set prio, T - set ToS
C - client, M - mirror, V - VOIP
Q - Real-Time Quality analysis
u - Upstream Real-Time Quality analysis
I - Deep inspect, U - Locally destined
E - Media Deep Inspect, G - media signal
r - Route Nexthop, h - High Value
A - Application Firewall Inspect
B - Permanent, O - Openflow
L - Log, o - Openflow config revision mismatched
Source IP or MAC Destination IP Prot SPort DPort Cntr Prio ToS Age Destination TAge Packets Bytes Flags CPU ID
----------------- --------------- ---- ----- ----- -------- ---- --- --- ----------- ---- ---------- ---------- --------------- -------
10.126.16.4 224.0.0.22 2 2 2 0/0 6 48 0 0/0/2 24 9 360 FCI 29
10.126.16.4 239.255.0.1 17 52417 8650 2/22 0 0 1 0/0/2 1f 10 2648 FCA 16
10.126.16.4 239.255.0.1 17 52272 8650 2/13 0 0 0 0/0/2 8 6 1800 FCA 16
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[Matt]
[Sr. Network Engineer]
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