240 bytes output CRC Errors Data CRC 0 Ringword CRC 0 InvRingWord 0 PcsCodeWord 0 3/2 is OK Loopback No Cable Length 50cm Neighbor 2 Link Ok Yes Sync Ok Yes Link Active Yes Changes to LinkOK 1 Five minute input rate 10 bytes/sec Five minute output rate 0 bytes/sec 60412 bytes input 480 bytes output CRC Errors Data CRC 0 Ringword CRC 0 InvRingWord 0 PcsCodeWord 0 Table 4: show switch stack-ports detail Command Output Managing Switch Stacks show switch stack-ports detail Command Output: Example Field Description Neighbor Switch number of the active member at the other end of the stack cable. Cable Length Valid lengths are 50 cm, 1 m, or 3 m.
If the switch cannot detect the cable length, the value is Unknown. The cable might not be connected, or the link might be unreliable. Link OK Whether the stack cable is connected and functional. There may or may not be a neighbor connected on the other end. The link partner is a stack port on a neighbor switch. • No: There is no stack cable connected to this port or the stack cable is not functional. • Yes: There is a functional stack cable connected to this port. Link Active Whether a neighbor is connected on the other end of the stack cable. • No: No neighbor is detected on the other end. The port cannot send traffic over this link. • Yes: A neighbor is detected on the other end.
The port can send traffic over this link. Sync OK Whether the link partner sends valid protocol messages to the stack port. • No: The link partner does not send valid protocol messages to the stack port. • Yes: The link partner sends valid protocol messages to the port. # Changes to LinkOK The relative stability of the link. If a large number of changes occur in a short period of time, link flapping can occur. Managing Switch Stacks 15