ATM OAM on one Side?

Answered Question
Oct 10th, 2007

Hi All.

I am peering to an MPLS provider over an ATM circuit. If I want to turn on OAM Manage on my ATM interface, does the Provider have to have OAM turned on on their side, as well?

I have received OAM AIS/RDI cells from the turn-up process, but from I understand, these are sent from the switch(s), not the ATM endpoints.

So if I turn on OAM manage on my end of the VC, and it starts sending out loopback cells, will the other endpoint (provider router) automatically loop those back, regardless of their settings?

I need to make sure, because I am remote to this router, and I don't want to have to make a trip out there.

Thanks,

Alex

#show atm pvc 1/60

Description: N/A

ATM1/0.60: VCD: 1, VPI: 1, VCI: 60

UBR, PeakRate: 45000 (106133 cps)

AAL5-LLC/SNAP, etype:0x0, Flags: 0xC20, VCmode: 0x0, Encapsize: 12

OAM frequency: 0 second(s), OAM retry frequency: 1 second(s)

OAM up retry count: 3, OAM down retry count: 5

OAM Loopback status: OAM Disabled

OAM VC Status: Not Managed

ILMI VC status: Not Managed

InARP frequency: 15 minutes(s)

Transmit priority 4

InPkts: 487941, OutPkts: 385654, InBytes: 223855051, OutBytes: 49279936

InPRoc: 148534, OutPRoc: 49081, Broadcasts: 92407

InFast: 339377, OutFast: 244145, InAS: 0, OutAS: 0

InPktDrops: 0, OutPktDrops: 0/0/0 (holdq/outputq/total)

CrcErrors: 0, SarTimeOuts: 0, OverSizedSDUs: 0, LengthViolation: 0, CPIErrors: 0

Out CLP=1 Pkts: 0

OAM cells received: 30

F5 InEndloop: 0, F5 InSegloop: 0, F5 InAIS: 15, F5 InRDI: 15

F4 InEndloop: 0, F4 InSegloop: 0, F4 InAIS: 0, F4 InRDI: 0

OAM cells sent: 15

F5 OutEndloop: 0, F5 OutSegloop: 0, F5 OutAIS: 0, F5 OutRDI: 15

F4 OutEndloop: 0, F4 OutSegloop: 0, F4 OutRDI: 0

OAM cell drops: 0

Status: UP

I have this problem too.
0 votes
Correct Answer by Paolo Bevilacqua about 9 years 2 months ago

Yes, the other end of PVC will reflect OEM cells automatically and does not require any configuration for the feature to work on your side.

If you want to work safely when doing remote changes, schedule a reload with "reload in 5 minutes". Do the changes and if all is good do "reload cancel". But if you get locked out, router will reload as scheduled with the last saved configuration.

hope this helps, please rate post if it does!

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Correct Answer
Paolo Bevilacqua Wed, 10/10/2007 - 14:35

Yes, the other end of PVC will reflect OEM cells automatically and does not require any configuration for the feature to work on your side.

If you want to work safely when doing remote changes, schedule a reload with "reload in 5 minutes". Do the changes and if all is good do "reload cancel". But if you get locked out, router will reload as scheduled with the last saved configuration.

hope this helps, please rate post if it does!

alex-boucher Thu, 10/11/2007 - 12:18

Thanks!

I just wanted some verification, before trying. I will be trying this tonight

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