We have three 24 port (Gigabit) Netgear GS724T switches which are connected in the following way:
SW-003 > SW-001 > SW-002
The port on SW-002 that connects to Sw-003 is constantly flashing once per second, the rest are flickering as the data is transferring as expected.
I am concerned that this may mean that we are at risk of exceeding the Gigabit bandwidth between the two switches. If this is the case then I would presume the fix would be to enable a spanning tree - which I have tried but I can't understand if I need to enable a spanning tree with matching ports on all of the switches. So ports 1 and 2 on SW-002 has a spanning tree and ports 1 and 2 on SW-003 has a spanning tree enabled.
Is that correct?
At the moment I have connected an extra patch cable between the two and it seems to create some form of routing loop that causes all ports to flash once per second and the network stops working.
The monitoring results for the port is as follows:
Port Role Disabled STP State Manual Forwarding Admin Mode Enable LACP Mode Enable Physical Mode Auto Physical Status 1000 Mbps Full Duplex Packets RX and TX 64 Octets 323001614 Packets RX and TX 65-127 Octets 19692371 Packets RX and TX 128-255 Octets 8970100 Packets RX and TX 256-511 Octets 8629484 Packets RX and TX 512-1023 Octets 130326 Packets RX and TX 1024-1518 Octets 2792337 Packets RX and TX > 1522 Octets 0 Octets Received 14989599039 Packets Received 64 Octets 153708043 Packets Received 65-127 Octets 11096781 Packets Received 128-255 Octets 5619084 Packets Received 256-511 Octets 4740987 Packets Received 512-1023 Octets 85517 Packets Received 1024-1518 Octets 1114750 Packets Received > 1522 Octets 0 Total Packets Received Without Errors 176365237 Unicast Packets Received 55672181 Multicast Packets Received 2910638 Broadcast Packets Received 117782418 Total Packets Received with MAC Errors 0 Jabbers Received 0 Fragments Received 0 Undersize Received 0 Alignment Errors 0 Rx FCS Errors 0 Overruns 0 802.3x Pause Frames Received 0 Broadcast Storm Recovery 0 Total Packets Transmitted (Octets) 15915167667 Packets Transmitted 64 Octets 169293572 Packets Transmitted 65-127 Octets 8595590 Packets Transmitted 128-255 Octets 3351016 Packets Transmitted 256-511 Octets 3888570 Packets Transmitted 512-1023 Octets 44809 Packets Transmitted 1024-1518 Octets 1677587 Packets Transmitted > 1522 Octets 0 Maximum Frame Size 1518 Total Packets Transmitted Successfully 186851144 Unicast Packets Transmitted 58640169 Multicast Packets Transmitted 5186416 Broadcast Packets Transmitted 123024559 Total Transmit Errors 0 Tx FCS Errors 0 Underrun Errors 0 Total Transmit Packets Discarded 0 Single Collision Frames 0 Multiple Collision Frames 0 Excessive Collision Frames 0 Port Membership Discards 0 STP BPDUs Received 0 STP BPDUs Transmitted 0 RSTP BPDUs Received 0 RSTP BPDUs Transmitted 0 MSTP BPDUs Received 0 MSTP BPDUs Transmitted 56 802.3x Pause Frames Transmitted 0 EAPOL Frames Received 0 EAPOL Frames Transmitted 0 Time Since Counters Last Cleared
Any advice would be appreciated.