Mohamed,
If you have Ethernet DSLAM, ATM OAM will not work. If you have ATM
DSLAM, the ATM OAM feature will work.
-- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: markom_at_ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sun, Jan 16, 2011 at 10:33, Mohamed Osama <tetoo_me_at_hotmail.com> wrote: > Dear Tyson, > > I have a doubt about some issue : wouldn't you think that the IP-DSLAM would terminate the OAM LOOpback Messages at the Ethernet Uplink port TO the PE Router? > > I hope to give me a solution for this Issue as The DSLAM Connected To ATM through the Customer and Ethernet Link To The PE Router,this is why we have a Problem as We before we migrate from ATM DSLAM to IP DSLAM,there wasn't any problem. > > > > ThANKS, > Osama > >> From: tscott_at_ipexpert.com >> To: tetoo_me_at_hotmail.com; dcp_at_dcptech.com; ccielab_at_groupstudy.com >> Subject: RE: ATM-AToM >> Date: Thu, 13 Jan 2011 12:12:53 -0500 >> >> You are trying to perform the role of the CE in this. The CE needs to do >> OAM between CE locations and make routing decisions based on the best path, >> This is not the role of the provider in this scenario to decide how to >> forward traffic over the two paths. That is the role of the customer. >> >> >> >> Regards, >> >> >> >> Tyson Scott - CCIE #13513 R&S, Security, and SP >> Managing Partner / Sr. Instructor - IPexpert, Inc. >> Mailto: tscott_at_ipexpert.com >> >> >> >> >> >> From: Mohamed Osama [mailto:tetoo_me_at_hotmail.com] >> Sent: Thursday, January 13, 2011 11:56 AM >> To: dcp_at_dcptech.com; tscott_at_ipexpert.com; Cisco certification >> Subject: RE: ATM-AToM >> >> >> >> Dear All, >> >> >> >> Yes thats True and CE want Us To Provide Him with Another Layer 2 circuit so >> that in this case CE will be Connected to our PE1 with 2 Layer 2 Circuits on >> Separate 2 ATM interfaces on PE1 router and For Sure our PE1 will have >> xconnect to the other End PE2. >> >> >> >> In My scenario,I'm talking about the Layer 2 circuit,How I can Detect if the >> ATM Layer 2 Circuit between PE and CE is UP or Down, >> >> and if it's Down,how can i provision the Other Layer 2 Circuit to be used >> For AToM Layer 2 VPN,and if both up how load balance and load sharing will >> be down. >> >> >> >> Its similar to the case when having 2 static Route under VRF with Tracking >> IP SLA but this for LAyer 3 customer which is Using Routing not LAyer 2 vpn >> :) ---------- I said this as an example Just to clear my point :D >> >> >> >> Thanks, >> >> Osama >> >> > From: dcp_at_dcptech.com >> > To: tetoo_me_at_hotmail.com; tscott_at_ipexpert.com; ccielab_at_groupstudy.com >> > Subject: RE: ATM-AToM >> > Date: Thu, 13 Jan 2011 11:38:54 -0500 >> > >> > AToM requires the PE's to have L3 connectivity. The PE/CE connection is >> L2. >> > On the PE ATM interface you will have "xconnect 1.1.1.1 100 encap mpls" >> > where 1.1.1.1 is the loopback on the other PE. >> > >> > David >> > >> > -- >> > http://dcp.dcptech.com >> > >> > >> > > -----Original Message----- >> > > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of >> > > Mohamed Osama >> > > Sent: Thursday, January 13, 2011 11:02 AM >> > > To: tscott_at_ipexpert.com; Cisco certification >> > > Subject: RE: ATM-AToM >> > > >> > > Dear Tyson, >> > > what if there is no layer 3 information between PE Router and the >> > > customer Router,only layer 2 ATM circuit and we are offering them 2 >> > > Layer 2 AToM circuit for redundancy. >> > > How can i do that??beside i can't do any changes at the Customer >> > > Router. >> > > I appreciate helping me in this case. >> > > Thanks,Osama >> > > >> > > > From: tscott_at_ipexpert.com >> > > > To: tetoo_me_at_hotmail.com; ccielab_at_groupstudy.com >> > > > Subject: RE: ATM-AToM >> > > > Date: Thu, 13 Jan 2011 10:26:02 -0500 >> > > > >> > > > If the OAM loopback responses are lost then the PVC goes down which >> > > will >> > > > force the traffic in the other direction. I am under the presumption >> > > you >> > > > have some L3 traffic running across the connection. Simply routing >> > > of the >> > > > connection between the sites should do. I am under the hope that you >> > > > designed this terminating the AToM with Loopbacks as the >> > > source/destination >> > > > allowing simply routing protocol path preference to decide the path >> > > to take. >> > > > >> > > > >> > > > >> > > > Regards, >> > > > >> > > > >> > > > >> > > > Tyson Scott - CCIE #13513 R&S, Security, and SP >> > > > Managing Partner / Sr. Instructor - IPexpert, Inc. >> > > > Mailto: tscott_at_ipexpert.com >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > From: Mohamed Osama [mailto:tetoo_me_at_hotmail.com] >> > > > Sent: Thursday, January 13, 2011 10:20 AM >> > > > To: tscott_at_ipexpert.com; Cisco certification >> > > > Subject: RE: ATM-AToM >> > > > >> > > > >> > > > >> > > > Dear Tyson, >> > > > >> > > > >> > > > >> > > > Thanks For Your Valuable Information, >> > > > >> > > > But How can i use It To monitor and Manage The Customer Layer 2 VPN >> > > Circuit, >> > > > >> > > > so that if The First AToM layer 2 VPN circuit can Detect its Down, >> > > > >> > > > >> > > > >> > > > then Can Utilize The Other Layer 2 VPN Link To be Active In The Layer >> > > 2 >> > > > AToM? >> > > > >> > > > >> > > > >> > > > Any Advices About This?what configurations should be applied to the >> > > Router >> > > > to Solve that? >> > > > >> > > > >> > > > >> > > > I appreciate Your Response >> > > > >> > > > >> > > > >> > > > Thanks, >> > > > >> > > > Osama >> > > > >> > > > > From: tscott_at_ipexpert.com >> > > > > To: tetoo_me_at_hotmail.com; ccielab_at_groupstudy.com >> > > > > Subject: RE: ATM-AToM >> > > > > Date: Thu, 13 Jan 2011 09:22:34 -0500 >> > > > > >> > > > > It is called OAM management. >> > > > > >> > > > >> > > http://www.cisco.com/en/US/tech/tk39/tk51/technologies_q_and_a_item0918 >> > > 6a008 >> > > > > 0111154.shtml >> > > > > >> > > > > >> > > > > Regards, >> > > > > >> > > > > Tyson Scott - CCIE #13513 R&S, Security, and SP >> > > > > Managing Partner / Sr. Instructor - IPexpert, Inc. >> > > > > Mailto: tscott_at_ipexpert.com >> > > > > >> > > > > >> > > > > -----Original Message----- >> > > > > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On >> > > Behalf Of >> > > > > Mohamed Osama >> > > > > Sent: Thursday, January 13, 2011 6:49 AM >> > > > > To: Cisco certification >> > > > > Subject: ATM-AToM >> > > > > >> > > > > Dear Experts, >> > > > > >> > > > > Can you please help me with this issue :) >> > > > > >> > > > > I need to monitor the status of Layer 2 Circuit Carrying ATom- >> > > ATM,because >> > > > > the Customer is connected with two layer 2 links through ATM/DSLAM >> > > to our >> > > > PE >> > > > > Router. >> > > > > I need to find a way so that i can monitor the Status of Layer 2 >> > > LINK >> > > > > carring AToM to Be able to Utlize the Primary link and Backup Link. >> > > > > >> > > > > CPE------two Links-----ATM DSLAM---------Two Links-------PE >> > > > > >> > > > > Kindly notes i can't monitor the Status of Interfaces because the >> > > DSLAM >> > > > > doesnt provide it and we need to check layer 2 end to end. >> > > > > >> > > > > Any Mechanism To Provide that Solution? >> > > > > >> > > > > thanks, >> > > > > Osama >> > > > > >> > > > > >> > > > > Blogs and organic groups at http://www.ccie.net >> > > > > >> > > > > >> > > _______________________________________________________________________ >> > > > > Subscription information may be found at: >> > > > > http://www.groupstudy.com/list/CCIELab.html >> > > > >> > > > >> > > > Blogs and organic groups at http://www.ccie.net >> > > > >> > > > >> > > _______________________________________________________________________ >> > > > Subscription information may be found at: >> > > > http://www.groupstudy.com/list/CCIELab.html >> > > >> > > >> > > Blogs and organic groups at http://www.ccie.net >> > > >> > > _______________________________________________________________________ >> > > Subscription information may be found at: >> > > http://www.groupstudy.com/list/CCIELab.html >> > >> > >> > Blogs and organic groups at http://www.ccie.net >> > >> > _______________________________________________________________________ >> > Subscription information may be found at: >> > http://www.groupstudy.com/list/CCIELab.html >> >> >> Blogs and organic groups at http://www.ccie.net >> >> _______________________________________________________________________ >> Subscription information may be found at: >> http://www.groupstudy.com/list/CCIELab.html > > > Blogs and organic groups at http://www.ccie.net > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html Blogs and organic groups at http://www.ccie.netReceived on Sun Jan 16 2011 - 10:42:24 ART
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