360
[RouterB] x25 switching
# Configure Serial 2/0 as an X.25 interface.
[RouterB] interface serial 2/0
[RouterB-Serial2/0] link-protocol x25 dce
# Configure Serial 2/1 as an FR interface.
[RouterB] interface serial 2/1
[RouterB-Serial2/1] link-protocol fr
[RouterB-Serial2/1] fr interface-type dce
# Configure the FR Annex G DLCI.
[RouterB-Serial2/1] fr dlci 100
[RouterB-fr-dlci-Serial2/1-100] annexg dce
# Configure X.25 local switching.
[RouterB] x25 switch svc 1 interface serial 2/0
# Configure X.25 over FR switching.
[RouterB] x25 switch svc 2 interface serial 2/1 dlci 100
4. Configure Router C:
# Enable X.25 switching.
<RouterC> system-view
[RouterC] x25 switching
# Configure Serial 2/0 as X.25 interface.
[RouterC] interface serial 2/0
[RouterC-Serial2/0] link-protocol x25 dce
# Configure Serial 2/1 as FR interface.
[RouterC] interface serial 2/1
[RouterC-Serial2/1] link-protocol fr
# Configure the FR Annex G DLCI.
[RouterC-Serial2/1] fr dlci 100
[RouterC-fr-dlci-Serial2/1-100] annexg dte
# Configure X.25 local switching.
[RouterC] x25 switch svc 2 interface serial 2/0
# Configure X.25 over FR switching.
[RouterC] x25 switch svc 1 interface serial 2/1 dlci 100
PVC application of X.25 over FR
Network requirements
In Figure 145, Router A is connected to Router B, Router C to Router D through X.25, and Router B is
connected to Router C through FR.
Configure FR Annex G DLCI 100 on the two routers to interconnect the two X.25 networks, enabling
Host A and Host B to communicate with each other.
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