Configuration Guide Configuring Interfaces
Working Principle
When exchanging a great throughput of data, an interface may receive jumbo frames whose size is larger than that of typical
Ethernet frames. MTU is the size of a valid data segment of a frame. It does not include the overhead of Ethernet
encapsulation.
If the size of a frame received or forwarded by an interface exceeds the specified MTU, the frame will be discarded.
The MTU of an interface ranges from 64 to 9,216 in the unit of bytes, with each label stack of four bytes. The default MTU is
1,500 bytes.
The mtu command is valid only for physical interfaces.
Related Configuration
 Configuring the MTU
The default MTU of an interface is generally 1,500 bytes.
Run the mtu num command in interface configuration mode to set the MTU for an interface.
1.3.4 Enabling or Disabling Link Trap
In interface configuration mode, you can configure whether to send link traps of an interface on a device.
Working Principle
If link trap is enabled on an interface, the SNMP sends link traps when the link status of the interface changes.
Related Configuration
 Enabling Link Trap
Link trap is enabled by default.
In interface configuration mode, you can run the [ no ] snmp trap link-status command to enable or disable link trap on an
interface.
1.3.5 Enabling Interface Index Persistence
Similar to interface description, an interface index is also used to identify an interface. It is the ID of an interface. Every time
an interface is created, the system automatically assigns a unique index to the interface. When the device is restarted, the
index of the interface may change. If interface index persistence is enabled, the interface index remains the same after the
device is restarted.
Working Principle
If interface index persistence is enabled, the index of an interface remains the same after the device is restarted.
To Next Page
Loading...
Need help?
General
