Cisco IOS Wide-Area Networking Configuration Guide - Free Books

Configuring Frame RelayCustomizing Frame Relay for Your NetworkConfiguring Data-Stream Hardware Compression and IP Header Compression on a Point-to-Point SubinterfaceTo configure data-stream hardware compression and TCP or Real-Time Transport Protocol (RTP) headercompression on a point-to-point subinterface, use the following commands beginning in globalconfiguration mode. Note that when you specify data-stream hardware compression, Cisco-proprietaryencapsulation is automatically enabled.CommandPurposeStep 1 Router(config)# interface type number point-to-point Configures a subinterface type and enterssubinterface configuration mode.Step 2 Router(config-subif)# ip address address mask Sets the IP address for an interface.Step 3 Router(config-subif)# frame-relay interface-dlci dlci Assigns a DLCI to a specified Frame Relaysubinterface on the router or access server.Step 4Step 5Router(config-subif)# frame-relay payload-compressiondata-stream stac [hardware-options]Router(config-subif)# frame-relay ip tcpheader-compression [passive]orEnables hardware compression on an interface orsubinterface that uses Cisco-proprietaryencapsulation.Configures an interface to ensure that theassociated PVCs carry outgoing TCP headers incompressed form.Router(config-subif)# frame-relay ip rtpheader-compression [passive]Enables RTP header compression on the physicalinterface.For an example of data-stream compression and IP header compression configured on a point-to-pointsubinterface, see the section “Data-Stream Hardware Compression with TCP/IP Header Compression ona Point-to-Point Subinterface Example” later in this chapter.Configuring Data-Stream Hardware Compression and IP Header Compression on a Multipoint SubinterfaceTo configure data-stream hardware compression and TCP or RTP header compression on a multipointsubinterface, use the following commands beginning in global configuration mode. Note that when youspecify data-stream hardware compression, Cisco-proprietary encapsulation is automatically enabled.CommandPurposeStep 1 Router(config)# interface type number multipoint Configures a subinterface type and enterssubinterface configuration mode.Step 2 Router(config-subif)# frame-relay interface-dlci dlci Assigns a DLCI to a specified Frame Relaysubinterface on the router or access server.45