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Page 94 | AlliedWare™ OS How To Note: IGMP
Stopping snoopers from snooping non-IGMP messages > Preventing an All Groups entry for a port
9. Display port 24’s packet counters, which show that many multicast packets have
been transmitted on the port.
In summary, when a port receives the All Groups designation, a stream is sent to that port
when either:
z the stream's group entry times out and is refreshed, or
z the port's internal timer hits zero and is refreshed
It is most likely that the group entry will time out first.
Manager Switch 2> show switch port=24 counter
Switch Port Counters
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Port 24. Fast Ethernet MAC counters:
Combined receive/transmit packets by size (octets) counters:
64 84 512 - 1023 0
65 - 127 16 1024 - MaxPktSz 830
128 - 255 0 1519 - 1522 0
256 - 511 0
General Counters:
Receive Transmit
Octets 1312 Octets 1135836
Pkts 16 Pkts 914
FCSErrors 0 FCSErrors 0
MulticastPkts 16 MulticastPkts 914
BroadcastPkts 0 BroadcastPkts 0
PauseMACCtlFrms 0 PauseMACCtrlFrm 0
OversizePkts 0 OversizePkts 0
Fragments 0 Fragments 0
Jabbers 0 Jabbers 0
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