[c-nsp] Ethernet CFM issue

arulgobinath emmanuel arulgobi at gmail.com
Wed Aug 28 07:04:17 EDT 2013


I'm missing some points (MIP's)  seems to be , let me go through the theory
again .

Regards,
Gobinath


On Wed, Aug 28, 2013 at 1:01 PM, arulgobinath emmanuel
<arulgobi at gmail.com>wrote:

> Hi ,
> I'm testing Ethernet CFM ,after the fault restored the link still down
> until i remove the CFM configuration :
>
> RP/0/1/CPU0:12K-1#show int gigabitEthernet 0/2/0/0
> Wed Aug 28 11:58:45.240 UTC
> GigabitEthernet0/2/0/0 is up, line protocol is down
>
>
> 12k - IOS XR 4.3   with SDR i'm testing this.
> Following is the setup .
>
> R1 - [ Gig0/2/0/0] <---> [Gig0/2]  <--->SW  <--->[ Gig 0/1] <--->
>  ]Gig0/3/0/0] R2
>
> R1
> -----------
> ethernet cfm
>  domain TEST level 7
>   service CUST down-meps
>    continuity-check interval 10s
>    efd
>   !
>
> interface GigabitEthernet0/2/0/0
>  cdp
>  ipv4 address 10.19.20.1 255.255.255.0
>  ethernet cfm
>   mep domain TEST service CUST mep-id 101
>   !
>
>
> R2
>
> ---------
>
> ethernet cfm
>  domain TEST level 7
>   service CUST down-meps
>    continuity-check interval 10s
>    efd
>   !
>
>
> interface GigabitEthernet0/3/0/0
>  cdp
>  ipv4 address 10.19.20.2 255.255.255.0
>  ethernet cfm
>   mep domain TEST service CUST mep-id 101
>   !
>  !
>
> When i shut down the  Gig 0/1 on the switch its bringing down both
> relevant Xr ports as expected.
>  But when i no shut the switch port both XR interfaces are showing as
> protocol down not coming up until i remove the ethernet cfm configuration.
>
>
>
> RP/0/0/CPU0:12K-2#show ethernet cfm local meps verbose
> Wed Aug 28 08:56:40.475 UTC
> Domain TEST (level 7), Service CUST
> Down MEP on GigabitEthernet0/3/0/0 MEP-ID 101
>
> ================================================================================
>   Interface state: Down    MAC address: 001f.9d8d.aaa0
>   Peer MEPs: 1 up, 1 with errors, 0 timed out (archived)
>
>   CCM generation enabled:  Yes (Remote Defect detected: Yes)
>   CCM defects detected:    R - Remote Defect received
>                            C - Config (our ID received)
>   AIS generation enabled:  No
>   Sending AIS:             No
>   Receiving AIS:           No
>   EFD triggered:           Yes
>
>   Packet        Sent      Received
>   ------  ----------
>  ---------------------------------------------------------
>   CCM            363           338  (out of seq: 1)
>   LBM              0             0
>   LBR              0             0  (out of seq: 0, with bad data: 0)
>   AIS              0             0
>   LCK              -             0
>
>
> I'm new to CFM , hope i'm missing something. I need only EFD feature to
> bring down the interface in actual scenario . Any pointers / help in this
> regard .
>
>
> Regards,
> Gobinath.
>


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