Marko, Ah! Did we overlook the Native VLAN ID mismatch?
________________________________ From: Marko Milivojevic <[email protected]> To: "Mills, Derek" <[email protected]> Cc: Narendra Naukwal <[email protected]>; "[email protected]" <[email protected]>; OSL Routing and Switching <[email protected]> Sent: Wednesday, 4 September 2013 10:08 PM Subject: Re: [OSL | CCIE_RS] WB3-Lab9-L2VPN Task Narendra, That's also a workaround and doesn't bring us to the root cause of the problem, which I repeat is not related to L2VPN in *any* way :-) -- Marko Milivojevic - CCIE #18427 (SP R&S) Senior CCIE Instructor / Managing Partner - IPexpert On Wed, Sep 4, 2013 at 8:57 AM, Mills, Derek <[email protected]> wrote: VLAN ID rewrite? > > > >-----Original Message----- >From: [email protected] >[mailto:[email protected]] On Behalf Of Narendra Naukwal >Sent: Wednesday, September 04, 2013 12:20 AM >To: Marko Milivojevic; [email protected] >Cc: OSL Routing and Switching > >Subject: Re: [OSL | CCIE_RS] WB3-Lab9-L2VPN Task > >I think the best thing forward is to match the VLAN Ids on both the PEs. >If the PE does not have STP enabled for that customer then customer BPDUs will >be tunneled. > > >Now if the BPDUs are being tunneled across the PW & the VLAN ID on both the >PEs do not match there are bound to be VLAN inconsistencies. > >Hope this helps. > >________________________________ > From: Marko Milivojevic <[email protected]> >To: [email protected] >Cc: OSL Routing and Switching <[email protected]> >Sent: Wednesday, 4 September 2013 1:34 AM >Subject: Re: [OSL | CCIE_RS] WB3-Lab9-L2VPN Task > > >Sure, but that will open the network for the loops. > >Try to focus on what the problem is, not how to get rid of the symptom :-) > >-- >Marko Milivojevic - CCIE #18427 (SP R&S) Senior CCIE Instructor / Managing >Partner - IPexpert > > >On Tue, Sep 3, 2013 at 1:02 PM, <[email protected]> wrote: > >> ** >> There are other solution for example vlan filter, also L2 protocol >> tunnel which erase local bpdu processing. >> >> >> >> >> On Tue, Sep 3, 2013, at 09:57 PM, [email protected] wrote: >> >> I am thinking we filtering bpdu to stop bpdu from blocking >> inconsistent vlan,bpdu filtering is acceptable for me. >> >> What did you think? >> >> >> >> On Tue, Sep 3, 2013, at 08:17 PM, Marko Milivojevic wrote: >> >> You're getting close. >> >> >> Respond to the list, please, as it may be interesting for the others >> to see, as well. >> >> -- >> Marko Milivojevic - CCIE #18427 (SP R&S) Senior CCIE Instructor / >> Managing Partner - IPexpert >> >> >> On Tue, Sep 3, 2013 at 11:16 AM, <[email protected]> wrote: >> >> >> ** >> In fact I did not think it is related to l2vpn, althhough I do not >> know different vlan to VC however I am thinking is related config to >> port or mode spanning tree, I will check conifguration to end point >> port: if 802.1q to two side and native vlans, or model of stp EEE >> 802.1D and pvst+ >> >> >> On Tue, Sep 3, 2013, at 07:32 PM, Marko Milivojevic wrote: >> >> That is all very correct, but that's not the cause of the error. You >> *can* have different VLAN IDs on two ends of the VC, but then you need >> to make sure something else is done. Something that causes this problem. >> >> Btw. it's not related to L2VPNs :-) >> >> -- >> Marko Milivojevic - CCIE #18427 (SP R&S) Senior CCIE Instructor / >> Managing Partner - IPexpert >> >> >> On Tue, Sep 3, 2013 at 9:45 AM, <[email protected]> wrote: >> >> Point-to-Point L2 VPNs L2 connectivity to the attached, that make >> circuits of two separate sites connected across a packet network >> Furthemore It provide connectivity transparent without need L2 >> connection acrosss SP core >> >> In the speficic: >> >> The VC identifiers at each end must match, so that the connection is >> uniquely >> addressed and MTU settings for the interfaces would have the same >> >> In mpls the topmost label is the transport label for the >> other end's 1321P address and the second label identifies the remote >>AC >> >> Your error usually mean you receveid bpdu tagged with vlan id that >> does't match vlan id where bpdu was receveid >> In the meantime make sure native vlan is consistent on both ends of a >> 802.1Q trunk and your vtp switches setup like VTP mode and domain >>names >> >> I hope it help you. >> >> >> >> >> >> On Tue, Sep 3, 2013, at 06:00 PM, Marko Milivojevic wrote: >> > Without straight-out giving you an answer (tell me if you want >>that), >> > let's >> > try to understand the problem first… >> > >> > What do you think is causing this inconsistency? >> > >> > -- >> > Marko Milivojevic - CCIE #18427 (SP R&S) >> > Senior CCIE Instructor / Managing Partner - IPexpert >> > >> > >> > On Tue, Sep 3, 2013 at 8:36 AM, Saleh Batouq >><[email protected]> >> > wrote: >> > >> > > WB3-Lab9 >> > > -------- >> > > Task: L2VPN >> > > ------ >> > > >> > > >> > > I am running this on GNS, I have the AToM properly configured and >> > > functional. >> > > >> > > BUT I get Inconsistency messege on Cat1 & Cat3 >> > > >> > > Any suggestion on over-riding this inconsistency? >> > > >> > > >> > > >> > > >> > > The following are the outputs of show commands: >> > > >> > > >> > > >> > > >> > > On R2 >> > > ----- >> > > >> > > R2#sh mpls l2transport vc >> > > >> > > Local intf Local circuit Dest address VC ID >> Status >> > > ------------- -------------------------- --------------- >>---------- >> > > ---------- >> > > Fa0/0.211 Eth VLAN 211 70.18.115.5 25 UP >> > > >> > > >> > > On R5 >> > > ------ >> > > >> > > R5#sh mpls l2transport vc >> > > >> > > Local intf Local circuit Dest address VC ID >> Status >> > > ------------- -------------------------- --------------- >>---------- >> > > ---------- >> > > Fa0/1.52 Eth VLAN 52 70.18.115.2 25 UP >> > > >> > > >> > > >> > > >> > > >> > > BUT I get Inconsistency messege on Cat1 & Cat3 >> > > -------------------------------------------------- >> > > >> > > >> > > On Cat1 >> > > ------- >> > > >> > > Cat1(config)# PVST+:Inconsistency timer expired. inconsistency 2 >> > > cleared for FastEthernet1/2 >> > > >> > > *Mar 1 01:44:56.119: %SPANTREE-2-RECV_PVID_ERR: Received BPDU >>with >> > > inconsistent peer vlan id 52 on FastEthernet1/2 VLAN211. >> > > *Mar 1 01:44:56.119: %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking >> > > FastEthernet1/2 on VLAN211. Inconsistent local vlan. >> > > >> > > >> > > >> > > Cat1#sh spanning-tree inconsistentports >> > > >> > > Name Interface Inconsistency >> > > -------------------- -------------------- ------------------ >> > > VLAN211 FastEthernet1/2 Port VLAN ID Mismatch >> > > >> > > Number of inconsistent ports (segments) in the system : 1 >> > > >> > > On Cat3 >> > > ------- >> > > >> > > [OK] >> > > Cat3# >> > > *Mar 1 01:44:49.487: %SPANTREE-2-RECV_PVID_ERR: Received BPDU >>with >> > > inconsistent peer vlan id 211 on FastEthernet1/5 VLAN52. >> > > *Mar 1 01:44:49.487: %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking >> > > FastEthernet1/5 on VLAN52. Inconsistent local vlan. >> > > >> > > >> > > Cat3#sh spanning-tree inconsistentports >> > > >> > > Name Interface Inconsistency >> > > -------------------- -------------------- ------------------ >> > > VLAN52 FastEthernet1/5 Port VLAN ID Mismatch >> > > >> > > Number of inconsistent ports (segments) in the system : 1 >> > > >> > > Best Regards, >> > > >> > > Saleh Hassan Batouq >> > > [email protected] >> > > _______________________________________________ >> > > For more information regarding industry leading CCIE Lab >>training, please >> > > visit www.ipexpert.com >> > > >> > > Are you a CCNP or CCIE and looking for a job? Check out >> > > www.PlatinumPlacement.com >> > > >> > > http://onlinestudylist.com/mailman/listinfo/ccie_rs >> > > >> > _______________________________________________ >> > For more information regarding industry leading CCIE Lab training, >>please >> > visit www.ipexpert.com >> > >> > Are you a CCNP or CCIE and looking for a job? 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