Configuration procedure

1. Enter system view.

system-view

N/A

2. Create an HDLC link bundle interface and enter its view.

interface hdlc-bundle bundle-id

By default, no HDLC link bundle interface is created.

3. Set the load balancing mode.

bundle load-balance { per-flow | per-packet }

By default, per-packet load balancing applies.

4. (Optional.) Specify a primary traffic processing slot for the interface.

• Distributed devices in standalone mode/centralized devices in IRF mode: service slot slot-number

• Distributed devices in IRF mode: service chassis chassis-number slot slot-number

By default, no primary traffic processing slot is specified for an interface.

Support for this command depends on the device model. For more information, see Layer 2—WAN Access Command Reference.

5. (Optional.) Specify a backup traffic processing slot for the interface.

• Distributed devices in standalone mode/centralized devices in IRF mode: service standby slot slot-number

• Distributed devices in IRF mode: service standby chassis chassis-number slot slot-number

By default, no backup traffic processing slot is specified for an interface.

Support for this command depends on the device model. For more information, see Layer 2—WAN Access Command Reference.

6. (Optional.) Set the minimum number of Selected interfaces required for bringing up the HDLC link bundle.

bundle min-active links number

By default, the minimum number of Selected interfaces required for bringing up an HDLC link bundle is not set.

7. (Optional.) Set the maximum number of Selected interfaces allowed in the HDLC link bundle.

bundle max-active links number

The default setting is the maximum number of Selected interfaces supported, which varies by device model.

8. (Optional.) Set the minimum bandwidth required for bringing up the HDLC link bundle.

bundle min-active bandwidth bandwidth

By default, the minimum bandwidth required for bringing up an HDLC link bundle is not set.

9. (Optional.) Set the expected bandwidth for the HDLC link bundle interface.

bandwidth bandwidth-value

By default, the expected bandwidth (in kbps) is the interface baud rate divided by 1000.

10. (Optional.) Set a description for the HDLC link bundle interface.

description text

By default, the description of an HDLC link bundle interface is the interface name followed by the Interface string.

11. (Optional.) Set the MTU size for the HDLC link bundle interface.

mtu size

The default setting is 1500 bytes.

The MTU size affects the fragmentation and reassembly of IP packets. Use this command to set a proper MTU size according to your network conditions.

12. (Optional.) Restore the default settings for the HDLC link bundle interface.

default

N/A

13. (Optional.) Bring up the HDLC link bundle interface

undo shutdown

By default, an HDLC link bundle interface is up.

When an HDLC link bundle interface is brought up, the state of each member interface is re-determined.

When an HDLC link bundle interface is shut down, the state of each Selected interface is placed into the Negotiated state.