Technical information

AX Series L2 Loop Detection Configuration Guide (Edition 2)

Restrictions and Notes

3.1 For Auto MDI/MDI-X suppression

This functionality is enabled when auto-negotiation is specified.

This functionality is disabled when 1000BASE-X is used as the interface and sfp is specified for

media-type.

This functionality is unavailable when 10GBASE-R is used as the interface.

3.2 For L2 loop detection functionality

(1) Notes for the AX67000S/AX6600S/AX6300S series

(a) Maximum number of devices

In the same L2 segment for which the L2 loop detection functionality is set, this functionality can be used for a

maximum of 64 devices in the AX6700S/AX6600S/AX6300S series in total. The AX3600S, AX2400S, and

AX1200S series have no such restrictions.

(b) Capacity limits for the number of physical ports

The following tables describe the Switch's capacity limits for the number of physical ports running the L2 loop

detection functionality.

Table 3.2-1 Device capacity limits for physical ports (AX6700S series)

NIF abbreviation Number of available physical ports

NK1G-24T All ports

NK1G-24S All ports

Up to two ports with one BSU NK10G-4RX

All ports with two or more BSUs (double-act or higher)

Up to two ports with one BSU

Up to four ports with two BSUs (double-act)

NK10G-8RX

Up to six ports with three BSUs (triple-act)

#4, #5

#1: If the number of physical ports exceeding the capacity limit is used and a high load of traffic flows continually or

temporarily, an L2 loop detection frame might be discarded. This might cause a delay in the detection of a loop failure.

#2: To ensure BSU redundancy, use three BSUs (triple-act).

#3: Use port numbers 1-4, 3-6, or 5-8.

#4: Use port numbers 1-6 or 3-8.

#5: To ensure BSU redundancy, use no more than four physical ports. However, use any of the following port numbers:

1-4, 3-6, or 5-8