From: Hobbs (deadheadblues@gmail.com)
Date: Mon Jan 19 2009 - 16:07:15 ARST
Hello Pavel, I just labbed this up and I am getting the same behavior. The
only way I get the interface to stay down is by using multipoint interface
instead of point-to-point. Doesn't seem to make sense, but for some reason I
remember reading about this somewhere...
On Mon, Jan 19, 2009 at 6:44 AM, Pavel Bykov <slidersv@gmail.com> wrote:
> I have a question about FR EEK.
> I configure it and apply on the interface, with intention that S0/1 will be
> my backup. (I checked S0/1 beforehand and it works by itself)
> Here is the config:
>
> ----------------------------------------
> interface Serial0/0.54 point-to-point
> backup interface Serial0/1
> ip address 173.1.54.5 255.255.255.0
> frame-relay interface-dlci 504
> class EEK
> end
> ----------------------------------------
>
>
> So then to test it I deconfigure EEK on the other side of FR cloud, and it
> works as expected. SUBIF is considered down and backup comes up:
>
> ----------------------------------------
> Jan 18 14:22:17.833: %LINK-3-UPDOWN: Interface Serial0/1, changed state to
> up
> Jan 18 14:22:18.835: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> Serial0/1, changed state to up
> ----------------------------------------
>
> But then, after a minute or so, the subinterface is brought up and backup
> goes down again:
>
> ----------------------------------------
> Jan 18 14:23:16.838: %LINK-5-CHANGED: Interface Serial0/1, changed state to
> standby mode
> Jan 18 14:23:17.839: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> Serial0/1, changed state to down
> ----------------------------------------
>
> Can anybody give me pointer why this would happen? The Subinterface is
> considered up while EEK is down? Why would it happen? Why it shows
> everywhere DOWN, but Subinterface is up all of a sudden?
> Here is the interface status along with PVC and EEK status taken at the
> same
> time:
>
> ----------------------------------------
> Rack1R5#sh ip int brie | ex una
> Interface IP-Address OK? Method Status
> Protocol
> Ethernet0/0 192.10.1.5 YES manual up
> up
> Serial0/0.54 173.1.54.5 YES manual up
> up
> Serial0/0.125 173.1.125.5 YES manual up
> up
> Serial0/1 173.1.45.5 YES manual standby mode
> down
> FastEthernet1/0 173.1.5.5 YES manual up
> up
> Loopback0 150.1.5.5 YES manual up
> up
>
>
> Rack1R5#show frame-relay pvc interface Serial0/0.54
>
> PVC Statistics for interface Serial0/0.54 (Frame Relay DTE)
>
> Active Inactive Deleted Static
> Local 2 1 0 0
> Switched 0 0 0 0
> Unused 0 2 0 0
>
> DLCI = 504, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE (EEK DOWN), INTERFACE =
> Serial0/0.54
>
> input pkts 622 output pkts 700 in bytes 9632
> out bytes 17276 dropped pkts 35 in pkts dropped
> 35
> out pkts dropped 0 out bytes dropped 0
> in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
> out BECN pkts 0 in DE pkts 0 out DE pkts 0
> out bcast pkts 27 out bcast bytes 9602
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> pvc create time 00:42:04, last time pvc status changed 00:01:43
>
> Rack1R5#sh frame-relay end-to-end keepalive interface Serial0/0.54
>
> End-to-end Keepalive Statistics for Interface Serial0/0.54 (Frame Relay
> DTE)
>
> DLCI = 504, DLCI USAGE = LOCAL, VC STATUS = ACTIVE (EEK DOWN)
>
> SEND SIDE STATISTICS
>
> Send Sequence Number: 251, Receive Sequence Number: 193
> Configured Event Window: 3, Configured Error Threshold: 3
> Total Observed Events: 255, Total Observed Errors: 59
> Monitored Events: 3, Monitored Errors: 3
> Successive Successes: 0, End-to-end VC Status: DOWN
>
> RECEIVE SIDE STATISTICS
>
> Send Sequence Number: 193, Receive Sequence Number: 192
> Configured Event Window: 3, Configured Error Threshold: 3
> Total Observed Events: 268, Total Observed Errors: 71
> Monitored Events: 3, Monitored Errors: 3
> Successive Successes: 0, End-to-end VC Status: DOWN
> ----------------------------------------
>
>
>
>
>
> --
> Pavel Bykov
> ----------------
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