Configuring Dce Side Frame Relay; Configuring Basic Dce Side Frame Relay - H3C SR6600 Configuration Manual

interface can include multiple subinterfaces, which do not exist physically. However, for the network
layer, the subinterface and main interface make no difference and both can be configured with virtual
circuits to connect to remote routers.
The subinterface of frame relay falls into two types: point-to-point (P2P) subinterface and
point-to-multipoint (P2MP) subinterface. A P2P subinterface is used to connect a single remote router
and a P2MP subinterface is used to connect multiple remote routers. A P2MP subinterface can be
configured with multiple virtual circuits, each of which sets up an address map with its connected remote
network address to distinguish different connections. Address maps can be manually set up or
dynamically set up by InARP.
The methods to configure a virtual circuit and address map for P2P subinterfaces and P2MP
subinterfaces are different, as described below.
P2P subinterface
Since there is only one peer address for a P2P subinterface, the peer address is determined when a
virtual circuit is configured for the subinterface. Therefore, you do not need to configure dynamic or
static address mapping for P2P subinterface.
P2MP subinterface
For a P2MP subinterface, a peer address can be mapped to the local DLCI through static address
mapping or InARP. The InARP configuration only needs to be configured on the main interface. If static
address mapping is required, it is necessary to set up static address map for each virtual circuit.
Follow these steps to configure a frame relay subinterface:
To do...
Enter system view
Create a subinterface
and enter subinterface
view
Configure a virtual
circuit on a frame relay
subinterface
Configure address
mapping

Configuring DCE Side Frame Relay

Configuring Basic DCE Side Frame Relay

Follow these steps to configure DCE side frame relay:
To do...
Enter system view
Enter interface view
Use the command...
system-view
interface interface-type
interface-number.subnumber [ p2mp | p2p ]
See Configuring a Frame Relay Local Virtual
Circuit.
See Configuring Frame Relay Address
Mappings.
Use the command...
system-view
interface interface-type
interface-number
8-118
Remarks
—
Required
The type of a frame relay
subinterface is p2mp by default.
Required
To configure a virtual circuit on a
frame relay subinterface, you must
do that manually, and make sure
that the virtual circuit is the same
on both ends.
Optional
For P2MP subinterface, it is
required to set up address map.
Remarks
—
—