R0106-HP MSR Router Series Layer 2 - WAN Command Reference(V7)

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<Sysname> system-view
[Sysname] interface dialer 1
mtu
Use mtu to set the MTU of a dialer interface.
Use undo mtu to restore the default.
Syntax
mtu size
undo mtu
Default
The MTU of dialer interfaces is 1500 bytes.
Views
Dialer interface view
Predefined user roles
network-admin
Parameters
size: Specifies the maximum transmission unit (MTU) in the range of 128 to 1500 bytes.
Usage guidelines
The MTU setting of a dialer interface affects the fragmentation and reassembly of IP packets.
Examples
# Set the MTU of interface Dialer 1 to 1200 bytes.
<Sysname> system-view
[Sysname] interface dialer 1
[Sysname-Dialer1] mtu 1200
ppp callback
Use ppp callback to enable an interface to send or accept callback requests as the callback client or
server.
Use undo ppp callback to disable an interface from sending or accepting callback requests.
Syntax
ppp callback { client | server }
undo ppp callback { client | server }
Default
Callback is disabled.
Views
Dialup interface view
Predefined user roles
network-admin