Frame Relay End-to-End

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Oct 23rd, 2007
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Hi,

I'm configuring End-to-End keepalive for two frame relay ends.

The config at the both ends as follows:

!

map-class frame-relay test

frame-relay end-to-end keepalive mode bidirectional

!

interface serial 0/0/0

frame-relay class test

!

!

HDQ-R2#show frame-relay end-to-end keepalive


End-to-end Keepalive Statistics for Interface Serial0/0/0 (Frame Relay DTE)

DLCI = 108, DLCI USAGE = LOCAL, VC STATUS = ACTIVE (EEK UP)


SEND SIDE STATISTICS


Send Sequence Number: 21, Receive Sequence Number: 22

Configured Event Window: 3, Configured Error Threshold: 2

Total Observed Events: 24, Total Observed Errors: 0

Monitored Events: 3, Monitored Errors: 0

Successive Successes: 3, End-to-end VC Status: UP


RECEIVE SIDE STATISTICS


Send Sequence Number: 21, Receive Sequence Number: 20

Configured Event Window: 3, Configured Error Threshold: 2

Total Observed Events: 23, Total Observed Errors: 0

Monitored Events: 3, Monitored Errors: 0

Successive Successes: 3, End-to-end VC Status: UP


My question, when i shutdown one of the both ends, the other end interface status is still UP UP, why?


Thanks in advance


Abd Alqader


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bangkydotnet Tue, 10/23/2007 - 02:40
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--edit: sorry posted in wrong thread, please delete this post--

Kevin Dorrell Tue, 10/23/2007 - 02:47
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Did you set it up at both ends? If one end is birdirectional, then the other end must be too. The symtom you are describing sounds as if you have bidirectional on this end and passive-reply at the other end.


http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hwan_r/wan_f1h.htm#wp1072196


Also, I presume these DLCI are on the physical interface, and the frame-relay class is also on the physical.


Kevin Dorrell

Luxembourg




a.hajhamad Tue, 10/23/2007 - 03:01
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Hi,

The ends are with bidirectional.

!

interface Serial0/0/0

ip address 192.168.1.122 255.255.255.252

encapsulation frame-relay

frame-relay class test

frame-relay interface-dlci 108

frame-relay lmi-type ansi

end


map-class frame-relay test

frame-relay end-to-end keepalive mode bidirectional


The other end:

!

interface Serial0/0/0.108 point-to-point

ip address 192.168.1.121 255.255.255.252

frame-relay class test

frame-relay interface-dlci 108

load-interval 30

end

map-class frame-relay test

frame-relay end-to-end keepalive mode bidirectional


One of the two ends is not a physical interface. Does is it work?

Nagendra Kumar ... Tue, 10/23/2007 - 03:36
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Hi,


The above mentioned config will work fine without any issue.


Regards,

Nagendra

a.hajhamad Tue, 10/23/2007 - 03:39
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Hi,

Why when one of the two ends is down, the other end stills UP, UP?


Thanks in advance


Abd Alqader

paolo bevilacqua Tue, 10/23/2007 - 03:55
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Please configure the end that is using main interface, with a subinterface just like the other one.


Hope this helps, please rate post if it does!

Kevin Dorrell Tue, 10/23/2007 - 04:44
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When end A is down, end B is still up.


If end B is down, is end A still up?


If you get diffreent results in different directions, which end is which?


Kevin Dorrell

Luxembourg


a.hajhamad Fri, 10/26/2007 - 23:52
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Hi Kevin,

Yes, when A is shut down, B is still UP. and vise versa!


By the way, i solved this issue by enabling the dynamic routing protocol btw. the two ends EIGRP. and route the traffic to loop back interface "advertsied" to the other end.


But if you have any comments about keep alive it will be helpful since i need also to know what is the problem


Thanks in advance


Abd Alqader

paolo bevilacqua Sat, 10/27/2007 - 00:45
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As I mentioned before, please use only point-to-point subinterface to configure this feature.

a.hajhamad Sat, 10/27/2007 - 00:47
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Point-to-Point subinterfaces from the both sides?

paolo bevilacqua Sat, 10/27/2007 - 05:55
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Yes. Beside end-to-end keepalives, you should not have one side configure on main interface (that with FR becomes multipoint implicitly).


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