Configuration Restrictions And Guidelines; Configuring Frame Relay Iphc On An Interface; Configuring Frame Relay Iphc On A Virtual Circuit - HPE FlexNetwork MSR series Configuration Manual

Configuration restrictions and guidelines

When you configure Frame Relay IPHC, follow these restrictions and guidelines:
•
To make IPHC take effect on a link, you must enable Frame Relay IPHC on both ends of the
link.
•
You can configure Frame Relay IPHC on either an interface or a virtual circuit. The settings on
an interface take effect on all virtual circuits of the interface. The settings on a virtual circuit take
effect only on the virtual circuit. When the interface settings are different from the virtual circuit
settings, the virtual circuit settings take effect.
•
When the encapsulation type is IETF, IPHC negotiation is triggered after you enable IPHC.
IPHC takes effect only when IPHC negotiation succeeds. When the encapsulation type is
nonstandard, IPHC takes effect without negotiation. In this case, the encapsulation type must
be nonstandard on both ends of the link.
•
Compression does not stop after you disable IPHC on an interface or virtual circuit. To stop
compression, you must also execute the shutdown/undo shutdown command sequence on
the interface or virtual circuit.
•
You can set the maximum number of RTP/TCP header-compression connections only after you
enable IPHC on an interface or virtual circuit. The configuration takes effect after you execute
the shutdown/undo shutdown command sequence on the interface or virtual circuit. After you
disable IPHC, the configuration is deleted.
•
The maximum number of RTP/TCP header-compression connections configured on an
interface is inherited by all virtual circuits of the interface. If you set a different maximum number
on a virtual circuit of the interface, the configuration on the virtual circuit takes effect.
•
Frame Relay IPHC and STAC compression are mutually exclusive.

Configuring Frame Relay IPHC on an interface

Step
1. Enter system view.
2. Enter interface view.
3. Enable Frame Relay IPHC.
4. Set the maximum number of
RTP
connections allowed.
5. Set the maximum number of
TCP
connections allowed.

Configuring Frame Relay IPHC on a virtual circuit

Step
1. Enter system view.
Command
system-view
interface
interface-number
fr compression iphc enable
[ nonstandard ]
fr
header-compression
rtp-connections
fr
header-compression
tcp-connections
Command
system-view
interface-type
compression iphc
compression iphc
231
Remarks
N/A
N/A
By default, Frame Relay IPHC is
disabled.
If you specify the nonstandard
keyword, only RTP
compression is supported, and
TCP header compression is not
supported.
The default setting is 16.
The default setting is 16.
Remarks
N/A
header