Lab 1. Frame Relay Inverse-ARP
Dari gambar diatas saya mau share bagaimana cara mengkonfigurasi frame-relay sederhana. Yang dibutuhkan adalah 4 router, dimana 1 router sebagai Switch Frame Relay dan ketiga router lainya sebagai router yang akan dihubungkan melalui FRSW. Untuk konfigurasi masing-masing routernya sebagai berikut :
Konfigurasi di R1 ======================= R1(config)#interface s0/0 R1(config-if)#ip address 10.10.10.1 255.255.255.0 R1(config-if)#encapsulation frame-relay R1(config-if)#no shutdown
Konfigurasi di R2 ======================= R2(config)#interface s0/0 R2(config-if)#ip address 10.10.10.2 255.255.255.0 R2(config-if)#encapsulation frame-relay R2(config-if)#no shutdown
Konfigurasi di R3 ======================= R3(config)#interface s0/0 R3(config-if)#ip address 10.10.10.3 255.255.255.0 R3(config-if)#encapsulation frame-relay R3(config-if)#no shutdown
Konfigurasi di FRSW ======================= FRSW(config)#frame-relay switching FRSW(config)#interface s0/0 FRSW(config-if)#encapsulation frame-relay FRSW(config-if)#frame-relay intf-type dce FRSW(config-if)#frame-relay lmi-type cisco FRSW(config-if)#frame-relay route 102 int s0/1 201 FRSW(config-if)#frame-relay route 103 int s0/2 301 FRSW(config-if)#no shutdown FRSW(config-if)#interface s0/1 FRSW(config-if)#encapsulation frame-relay FRSW(config-if)#frame-relay intf-type dce FRSW(config-if)#frame-relay lmi-type cisco FRSW(config-if)#frame-relay route 201 int s0/0 102 FRSW(config-if)#frame-relay route 301 int s0/2 103 FRSW(config-if)#no shutdown FRSW(config-if)#interface s0/2 FRSW(config-if)#encapsulation frame-relay FRSW(config-if)#frame-relay intf-type dce FRSW(config-if)#frame-relay lmi-type cisco FRSW(config-if)#frame-relay route 301 int s0/0 103 FRSW(config-if)#frame-relay route 302 int s0/1 203 FRSW(config-if)#no shutdown
Pada console kita akan lihat, frame-relay invers-arp langsung bekerja otomatis untuk memapping L3 ke L2 pada frame-relay tanpa kita mengkonfigurasi apapun selain merubah enkapsulasi menjadi frame-relay.
Melihat Mapping Frame Relay:
R1#show frame-relay map Serial0/0 (up): ip 10.10.10.2 dlci 102(0x66,0x1860), dynamic, broadcast,, status defined, active Serial0/0 (up): ip 10.10.10.3 dlci 103(0x67,0x1870), dynamic, broadcast,, status defined, active
R2#show frame-relay map Serial0/0 (up): ip 10.10.10.1 dlci 201(0xC9,0x3090), dynamic, broadcast,, status defined, active Serial0/0 (up): ip 10.10.10.3 dlci 203(0xCB,0x30B0), dynamic, broadcast,, status defined, active
R3#show frame-relay map Serial0/0 (up): ip 10.10.10.1 dlci 301(0x12D,0x48D0), dynamic, broadcast,, status defined, active Serial0/0 (up): ip 10.10.10.2 dlci 302(0x12E,0x48E0), dynamic, broadcast,, status defined, active
Dalam mapping diatas terlihat kata dynamic, itu karena dari router FRSW ngeBroadcast ke semua DLCI yang didapat dari LMI interfacenya dimana setelah dilakukan no shutdown pada masing-masing interface router dia akan request inverst-arp di DLCI.
TestPing:
R1#ping 10.10.10.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.10.10.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/125/228 ms R1#ping 10.10.10.3 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.10.10.3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 128/211/292 ms
R2#ping 10.10.10.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.10.10.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 136/167/244 ms R2#ping 10.10.10.3 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.10.10.3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/86/268 ms
R3#ping 10.10.10.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.10.10.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 128/174/204 ms R3#ping 10.10.10.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.10.10.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 72/145/260 ms