Frame relay Multilinking

Configuration d’un lien Multilink entre une interface multipoint avec 2 DLCI (R1) et 2 interfaces Point to Point (R2)

  • Création de l’interface multilink
  • Création de l’interface virtual-template
  • Association du virtual-template aux interface dlci

Configuration

R1
interface Multilink12
 ip address 10.1.12.1 255.255.255.0
 ppp multilink
 ppp multilink group 12
!
interface Virtual-Template12
 no ip address
 ppp multilink group 12
!
interface Serial0/0
 no ip address
 encapsulation frame-relay
!
interface Serial0/0.12 multipoint
 frame-relay interface-dlci 102 ppp Virtual-Template12
 frame-relay interface-dlci 112 ppp Virtual-Template12
!
R2

interface Multilink21
 ip address 10.1.12.2 255.255.255.0
 ppp multilink
 ppp multilink group 21
!
interface Virtual-Template21
 no ip address
 ppp multilink group 21
!
interface Serial0/0
 no ip address
 encapsulation frame-relay
!
interface Serial0/0.201 point-to-point
 frame-relay interface-dlci 201 ppp Virtual-Template21
!
interface Serial0/0.211 point-to-point
 frame-relay interface-dlci 211 ppp Virtual-Template21
!

 

Vérifications

R1#show ppp multilink

Multilink12, bundle name is R2
  Endpoint discriminator is R2
  Bundle up for 00:07:26, total bandwidth 200000, load 1/255
  Receive buffer limit 24000 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
    0xC received sequence, 0xE sent sequence
  Member links: 2 active, 1 inactive (max not set, min not set)
    Vi3, since 00:06:27
    Vi2, since 00:05:22
    Vt12 (inactive)
No inactive multilink interfaces

R1#show ip int bri
Interface                  IP-Address      OK? Method Status                Protocol
Serial0/0                  unassigned      YES NVRAM  up                    up
Serial0/0.12               unassigned      YES unset  up                    up
Virtual-Access1            unassigned      YES unset  down                  down
Virtual-Access2            unassigned      YES TFTP   up                    up
Virtual-Access3            unassigned      YES TFTP   up                    up
Multilink12                10.1.12.1       YES manual up                    up
Virtual-Template12         unassigned      YES unset  down                  down

R1#show ip route con
     10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C       10.1.12.2/32 is directly connected, Multilink12
C       10.1.12.0/24 is directly connected, Multilink12
R2#show ppp multilink

Multilink21, bundle name is R1
  Endpoint discriminator is R1
  Bundle up for 00:09:42, total bandwidth 200000, load 1/255
  Receive buffer limit 24000 bytes, frag timeout 1000 ms
    0/0 fragments/bytes in reassembly list
    1 lost fragments, 1 reordered
    1/168 discarded fragments/bytes, 0 lost received
    0x12 received sequence, 0x10 sent sequence
  Member links: 2 active, 1 inactive (max not set, min not set)
    Vi3, since 00:08:42
    Vi2, since 00:07:37
    Vt21 (inactive)
No inactive multilink interfaces

R2#show ip interface brief
Serial0/0                  unassigned      YES TFTP   up                    up
Serial0/0.201              unassigned      YES unset  up                    up
Serial0/0.211              unassigned      YES unset  up                    up
Virtual-Access1            unassigned      YES unset  down                  down
Virtual-Access2            unassigned      YES TFTP   up                    up
Virtual-Access3            unassigned      YES TFTP   up                    up
Multilink21                10.1.12.2       YES manual up                    up
Virtual-Template21         unassigned      YES unset  down                  down
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