4
A.
Use the
display diagnostic-information
command. This command displays the operating statistics for multiple
feature modules, eliminating the need to use
display
commands for features one by one.
Q.
What are the differences between the system operating modes?
A.
The switch supports the following system operating modes:
standard
(the default) and
advance
.
•
In
standard
mode:
ACLs are applied to hardware by using DMA. The application efficiency is high, but packet loss might
occur during a short period of time after the application operation.
•
In
advance
mode:
ACLs are applied to hardware directly. No packet loss will occur.
For a system operating mode change to take effect, you must save the running configuration and reboot the
switch.
Q.
What is the maximum number of equal-cost multi-path (ECMP) route groups supported by the S7500E-XS
Switch Series?
A.
The S7500E-XS Switch Series supports a maximum of 4095 ECMP route groups. Use the following formula to
calculate the actual number supported by the switch:
(16 × 1024)/maximum number of ECMP routes
•
If the value is greater than 4095, the value 4095 applies.
•
If the value is smaller than 4095, the calculated value applies.
Use the
max-ecmp-num
command in system view to configure the maximum number of ECMP routes supported
by the system.
Q.
How many monitor ports does the switch support?
A.
The switch supports a maximum of four monitor ports. The switch has four port mirroring resources. Each of the
unidirectional port mirroring, inbound or outbound, uses one resource. A bidirectional port mirroring uses two
resources.
Service functions
This section contains the most frequently asked questions about service functions.
Q.
What are the forwarding capabilities of TRILL for multicast, broadcast, unknown unicast, and unknown
multicast frames on the switch?
A.
The maximum rate is 8 Gbps for multicast, broadcast, unknown unicast, and unknown multicast frames that are
forwarded by TRILL. This rate equals the lower value between the following settings:
•
Half the bandwidth of the IRF port
—In an IRF fabric, if an S7500E-XS switch forwards these frames through
a TRILL trunk port and a TRILL access port, both the original frames and TRILL-encapsulated frames pass
through the IRF port. Therefore, the total rate of these frames cannot exceed half the bandwidth of the IRF
port.
•
Bandwidth of the internal loopback interface
—Because these frames must be processed by the internal
loopback interface, the total rate of these frames cannot exceed the bandwidth of the interface.
