From: Scott Morris (swm@emanon.com)
Date: Sat Jul 03 2004 - 21:52:27 GMT-3
The "manage" parameter simply determines whether or not you care. :)
If you just type "oam-pvc", you will send them out, just not care about the
return and PVC will stay up:
Emanon-R7#sh atm pvc
VCD / Peak Avg/Min Burst
Interface Name VPI VCI Type Encaps SC Kbps Kbps Cells
Sts
1/0 1 1 101 PVC SNAP UBR 155000
UP
Emanon-R7#sh atm traf
0 Input packets
71 Output packets
0 Broadcast packets
0 Packets received on non-existent VC
0 Packets attempted to send on non-existent VC
0 OAM cells received
F5 InEndloop: 0, F5 InSegloop: 0, F5 InAIS: 0, F5 InRDI: 0
F4 InEndloop: 0, F4 InSegloop: 0, F4 InAIS: 0, F4 InRDI: 0
71 OAM cells sent
F5 OutEndloop: 71, F5 OutSegloop: 0, F5 OutRDI: 0
F4 OutEndloop: 0, F4 OutSegloop: 0, F4 OutRDI: 0
0 OAM cell drops
Emanon-R7#
(I have nothing connected to that PVC, so it shouldn't be up)
As soon as you change the command to include manage, the default retry
counts come into effect, and it actually cares whether or not they come
back...
interface ATM1/0
no ip address
no atm ilmi-keepalive
pvc 1/101
oam-pvc manage
!
end
Emanon-R7#
*Mar 26 04:26:03.746: %LINEPROTO-5-UPDOWN: Line protocol on Interface
ATM1/0, changed state to down
(After about 5 seconds per default "oam-retry" as shown in your document)
So, that's all. :)
So, yes, the oam retry command does allow 'further control', assuming that
you ever cared about control to begin with if you didn't use the "manage"
parameter. *shrug*
Hope that helps!
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, CISSP,
JNCIP, et al.
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Tom
Martin
Sent: Saturday, July 03, 2004 6:58 PM
To: ccielab@groupstudy.com
Subject: ATM OAM management
Calling on all ATM gurus,
I am a bit unclear on configuring OAM management for ATM. I understand what
it does but the Cisco configuration and reference guides seem a bit vague
with one aspect.
I know that I can enable OAM management with the following command:
(config-if-atm-vc)# oam-pvc manage
According to the command reference the "manage" keyword is optional, leaving
3 possibilities:
1. The oam-pvc command is not configured under the VC.
2. The oam-pvc command is configured under the VC.
3. The "oam-pvc manage" command is configured under the VC.
Logic would seem to dictate that the VC will either periodically send OAM
cells or it won't. To me that logically represents options 3 and 1 above.
What does option 2 do???
The command reference makes reference to the fact that if OAM management is
enabled ("oam-pvc manage") that you have further control using "oam retry"
command. This leads me to believe that options #1 and #2 are the same,
neither send OAM cells therefore don't need to worry about a retry timer.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fwan
_r/atmcmds/wrfoampv.htm#wp1017388
-- Tom
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