R0106-HP MSR Router Series Layer 2 - WAN Configuration Guide(V7)

19
Ste
p
Command Remarks
7. (Optional.) Disable MP
fragmentation.
ppp mp fragment disable
By default, MP fragmentation is
enabled.
After you configure this command
on an interface, the settings
configured with the ppp mp lfi
enable and ppp mp min-fragment
commands do not take effect on
the interface.
8. (Optional.) Set the interface
description.
description text
Optional.
The default setting is interface
name Interface, for example,
MP-group3 Interface.
9. Set the polling interval.
timer-hold period The default setting is 10 seconds.
10. Set the MTU size of the
interface.
mtu size The default setting is 1500 bytes.
11. Set the expected bandwidth of
the interface.
bandwidth bandwidth-value
By default, the expected
bandwidth (in kbps) is the interface
baud rate divided by 1000.
12. (Optional.) Restore the default
settings for the interface.
default N/A
13. Bring up the interface.
undo shutdown By default, an interface is up.
14. Return to system view.
quit N/A
15. Enter interface view.
interface interface-type
interface-number
N/A
16. Assign the interface to a
specified MP-group interface,
and enable MP for the
interface.
ppp mp mp-group mp-number
By default, an interface is enabled
with PPP.
Configuring short sequence number header format negotiation
By default, an MP bundle receives and transmits fragments with long sequence numbers.
• To receive fragments with short sequence numbers, the local end should request the peer to transmit
short sequence numbers during LCP negotiation. After the negotiation succeeds, the peer transmits
fragments with short sequence numbers.
• To transmit fragments with short sequence numbers, the local end should ask the peer to send a
request for receiving short sequence numbers during LCP negotiation. After the negotiation
succeeds, the local end transmits fragments with short sequence numbers.
The sequence number format (long or short) of an MP bundle depends on the configuration of the first
channel joining the MP bundle.
To negotiate the use of short sequence numbers on a dialer MP bundle, configure the command on the
dialer interfaces and the ISDN D channels. To negotiate the use of short sequence numbers on a
common MP bundle, use the command on all its channels. Note that the command will cause PPP
re-negotiation.
To configure short sequence number header format negotiation for MP: