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CCIE #29033
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What do you need to be aware of when using Frame-relay back to back?
1 comments:
When using back-to-back frame-relay you must ensure that you turn off keepalives to ensure LMI is not used, if LMI is used the interface will never become up/up, also the DLCI on both ends should match.
Example:
R1
__
interface serial 1/0
no ip address
encapsulation frame-relay
no keepalive (disables LMI processing)
clock rate 128000 (DCE side must provide clocking)
interface serial 1/0.12 point-to-point
ip address 10.0.0.1 255.255.255.0
frame-relay interface-dlci 100
R2
__
interface serial 1/0
no ip address
encapsulation frame-relay
no keepalive (disables LMI processing)
interface serial 1/0.12 point-to-point
ip address 10.0.0.2 255.255.255.0
frame-relay interface-dlci 100
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