Hi all,
I have a MDS-9124 switch with one port which randomly becomes Error disabled due to MAC Bit error exceeded threshold. My colleague suspects that it's related to rate-mode setting, so I try to consult related docs.
In CLI configuration guide release 3.x and 4.x, I found that DS-C9124-K9 has 4 ports in each port group with total bandwidth of 16Gbps, and bandwidth of each port can be 4Gbps at maximum, so there is no need to set port rate mode to shared, and the same doc pointed that C9124 doesn't support shared mode. See http://www.cisco.com/en/US/products/ps5989/products_configuration_guide_chapter09186a0080664c6b.html#wp1392537
However, there follows a note:
2 By default, all ports in a 24-port 4-Gbps switching module operate in shared mode with administrative operating speed set to auto. All ports in a 24-port 4-Gbps switching module can operate in dedicated mode with a 2-Gbps operating speed. However, if you configure one or more ports to operate in 4-Gbps dedicated mode, some of the other ports in the module would have to operate in shared mode
See http://www.cisco.com/en/US/products/ps5989/products_configuration_guide_chapter09186a0080664c6b.html#wp1423079
Seems it's a contradiction in same doc.
