Are the default configurations consistent in the old and new versions of an S series switch

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The default configurations may be different in the old and new versions of an S series switch. You can run the display this include-default command (supported by S series switches running V200R001 or a later version) to check the valid configurations in the current view, including the unchanged default configurations.

Note: This command can be used in all views to display the following default configurations of physical attributes, basic Ethernet protocols, routing, multicast, QoS, and security, and other features.
For example, run the following commands to check the valid and default configurations in the current view of a GE interface (electrical interface).
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] display this include-default

Other related questions:
How does the S-series switch configure the default gateway
[Quidway]ip route-static 0.0.0.0 0.0.0.0 192.168.1.1

Whether the old version IAD can be access to U1980 in eSpace UC solution
If the IAD is registered by SIP, could insert U1980.

Versions of NTP supported by S series switches
S series switches support NTPv1, NTPv2, NTPv3, and NTPv4. NTPv4 applies to both IPv4 and IPv6 networks. The NTP version does not need to be configured on the NTP server and the packet version depends on that of packets sent by a client: If a client sends a packet in version 3, the server replies with a packet in version 3. If a client sends a packet in version 4, the server replies with a packet in version 4.

In which versions is SNMP for S series switches available
SNMP for S series switches is available in v1, v2c, and v3.

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