Hello,
Recently we upgraded the switches in our network, and we seem to have this issue with some of the ports on a multicast vlan for set top boxes where some of the ports seem to stop allowing any traffic through and the only way to rectify it is to restart the switch as shutting and unshutting the port seems to have no effect. The port always shows as connected and shows up in spanning tree. If anyone has any ideas it would be greatly appreciated.
HOSTNAME-SW01#sh int gi1/0/23
GigabitEthernet1/0/23 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 9c66.9768.ad17 (bia 9c66.9768.ad17)
Description:IPTV STB
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100/1000BaseTX
input flow-control is on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:13:09, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 43224
Queueing strategy: Class-based queueing
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
1708489 packets input, 126393295 bytes, 0 no buffer
Received 7662 broadcasts (3493 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 3493 multicast, 509 pause input
0 input packets with dribble condition detected
3520126 packets output, 4973509719 bytes, 0 underruns
Output 288228 broadcasts (179606 multicasts)
0 output errors, 0 collisions, 123 interface resets
60 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swap
VLAN0330
Spanning tree enabled protocol rstp
Root ID Priority 8522
Address 4874.1077.78c0
Cost 31000
Port 24 (GigabitEthernet1/0/24)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 33098 (priority 32768 sys-id-ext 330)
Address 9c66.9768.ad00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/23 Desg FWD 200000 128.23 P2p Edge
Gi1/0/24 Root FWD 20000 128.24 P2p
