Sebenarnya Frame Relay tidak mendukung authentikasi, dan fitur PPP lainya. tapi bisa diatasi dengan menggunakan virtual-template. dengan begitu authentikasi CHAP PPP dapat digunakan pada frame-relay.
Selain authentikasi, virtual-template juga digunakan untuk PPP multilink dimana beberapa link bisa dibundle menjadi satu. dengan begitu ada jaminan redudancy apabila satu PVC down bisa menggunakan yang lainya.
Selain authentikasi, virtual-template juga digunakan untuk PPP multilink dimana beberapa link bisa dibundle menjadi satu. dengan begitu ada jaminan redudancy apabila satu PVC down bisa menggunakan yang lainya.
R1(config)#interface s1/0
set enkapsulasinya menggunakan frame-relay, kemudian asosiasikan dlci ke virtual-template. untuk username menggunakan hostname router pasangan.
R1(config-if)#encapsulation frame-relay
R1(config-if)#frame-relay interface-dlci 102 ppp virtual-template 1
R1(config-fr-dlci)#no shut
R1(config)#interface s1/1
R1(config-if)#encapsulation frame-relay
R1(config-if)#frame-relay interface-dlci 204 ppp virtual-template 1
R1(config-fr-dlci)#no shut
R1(config-fr-dlci)#interface virtual-template 1R1(config-if)#ip address 12.12.12.1 255.255.255.0R1(config-if)#ppp multilinkR1(config-if)#ppp authentication chapR1(config-if)#username R3 password cisco
R3(config)#int s0/0R3(config-if)#encapsulation frame-relayR3(config-if)#frame-relay interface-dlci 201 ppp virtual-template 1R3(config-fr-dlci)#no shutR3(config-if)#int s0/1R3(config-if)#encapsulation frame-relayR3(config-if)#frame-relay interface-dlci 402 ppp virtual-template 1R3(config-fr-dlci)#no shutR3(config-if)#int virtual-template 1R3(config-if)#ip add 12.12.12.2 255.255.255.0R3(config-if)#ppp multilinkR3(config-if)#ppp authentication chapR3(config-if)#username R1 password cisco
R1#show ppp multilink
Virtual-Access4
Bundle name: R3
Remote Username: R3
Remote Endpoint Discriminator: [1] R3
Local Username: R1
Local Endpoint Discriminator: [1] R1
Bundle up for 00:02:25, total bandwidth 100000, load 1/255
Receive buffer limit 12192 bytes, frag timeout 1000 ms
0/0 fragments/bytes in reassembly list
0 lost fragments, 0 reordered
0/0 discarded fragments/bytes, 0 lost received
0x0 received sequence, 0x0 sent sequence
Member links: 1 (max not set, min not set)
Vi2, since 00:02:25
No inactive multilink interfaces
R3#show ppp multilink
Virtual-Access4
Bundle name: R1
Remote Username: R1
Remote Endpoint Discriminator: [1] R1
Local Username: R3
Local Endpoint Discriminator: [1] R3
Bundle up for 00:03:06, total bandwidth 100000, load 1/255
Receive buffer limit 12192 bytes, frag timeout 1000 ms
0/0 fragments/bytes in reassembly list
0 lost fragments, 0 reordered
0/0 discarded fragments/bytes, 0 lost received
0x0 received sequence, 0x0 sent sequence
Member links: 1 (max not set, min not set)
Vi2, since 00:03:07
No inactive multilink interfaces