F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100
119
Hardware Feature com
p
atible
Firewall module No
U200-A No
U200-S Yes
By default, in a PPP packet, the address field is fixed to 0xFF, and the control field is fixed to 0x03. The
fixed values make it easy to compress these two fields.
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 is completed,
the device compresses the address and control fields of non-LCP packets before sending them out, and
does not add address and control fields to them, thus increasing effective payload bandwidth on the link.
To ensure successful LCP negotiation, do not apply the compression to LCP packets.
HP recommends using the ACFC configuration option on low-speed links.
1. Configuring the local end to send ACFC requests
Ste
p
Command
Remarks
256. Enter system view.
system-view N/A
257. Enter interface view.
interface interface-type
interface-number
N/A
258. Configure the local end to send
ACFC requests, that is, to include
the ACFC option in its outbound
LCP negotiation requests.
ppp acfc local request
By default, the local end does not include
the ACFC option in its outbound LCP
negotiation requests.
2. Configuring how the local end handles the ACFC requests received from the peer
Ste
p
Command
Remarks
259. Enter system view. system-view N/A
260. Enter interface view.
interface interface-type interface-number N/A
261. Configure how the
local end handles
the ACFC requests
received from the
peer.
• Configure the local end to accept ACFC requests
received from the peer and to perform ACFC on
frames sent to the peer:
ppp acfc remote apply
• Configure the local end to accept ACFC requests
received from the peer, but not to perform ACFC
on frames sent to the peer:
ppp acfc remote ignore
• Configure the local end to reject ACFC requests
sent from the peer:
ppp acfc remote reject
Optional.
By default, the local end
accepts the ACFC
requests from the remote
peer, but does not
perform ACFC on frames
sent to the peer.
1170BConfiguring PFC negotiation
The following matrix shows the feature and hardware compatibility: