H3C Technologies H3C SecPath F5020 - Manual (Page 22)

14
Step Command Remarks
3. Specify the primary and
secondary DNS server IP
addresses to be allocated to
the peer in PPP negotiation.
ppp ipcp dns
primary-dns-address
[ secondary-dns-address ]
By default, a device does not
allocate DNS server IP addresses
to its peer if the peer does not
request them.
Configuring ACFC negotiation
PPP can compress the address and control fields of PPP packets to increase the payload size.
ACFC negotiation notifies the peer that the local end can receive packets carrying compressed address
and control fields.
ACFC negotiation is implemented at the LCP negotiation stage. After the ACFC negotiation succeeds,
PPP does not include the address and control fields in non-LCP packets. To ensure successful LCP
negotiation, PPP does not apply the compression to LCP packets.
H3C recommends that you use the ACFC configuration option on low-speed links.
To configure the local end to send ACFC requests:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the local end to
send ACFC requests by
including the ACFC option in
outbound LCP negotiation
requests.
ppp acfc local request
By default, the local end does not
include the ACFC option in
outbound LCP negotiation
requests.
To configure the local end to reject ACFC requests received from the peer:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the local end to
reject ACFC requests received
from the peer.
ppp acfc remote-reject
By default, the local end accepts
the ACFC requests from the remote
peer, and performs ACFC on
frames sent to the peer.