[j-nsp] juniper-nsp Digest, Vol 179, Issue 20

[Brijesh Patel]

Hi

Is MX router has firewall filter on loop back?

If so pleae make sure ldp related port and IP address allow

Thanks

Brijesh

On Saturday, October 21, 2017, <juniper-nsp-request at puck.nether.net> wrote:

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> Today's Topics:
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>    1. Re: l2circuit down one side/up another (Rafael Ganascim)
>    2. Re: l2circuit down one side/up another (Alexandre Guimaraes)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 21 Oct 2017 07:53:16 -0200
> From: Rafael Ganascim <rganascim at gmail.com <javascript:;>>
> To: Caio <caiot5 at gmail.com <javascript:;>>
> Cc: juniper-nsp <juniper-nsp at puck.nether.net <javascript:;>>
> Subject: Re: [j-nsp] l2circuit down one side/up another
> Message-ID:
>         <
> CAD4ZOMx2nc0u78L5ORTiWeKwQi58tF2cH07Z1q4iY505mTKzbQ at mail.gmail.com
> <javascript:;>>
> Content-Type: text/plain; charset="UTF-8"
>
> Just more checks:
>
> How is the MPLS forwarding table for the negotiated Labels for loopback and
> l2circuit?
> Are you using label PHP? Can you switch It off?
> Is the LDP adjacency up and exchanging labels?
> Are the l2circuit neighbors configured between loopback interfaces?
>
> Regards,
>
>
>
>
> Em 20 de out de 2017 8:26 AM, "Caio" <caiot5 at gmail.com <javascript:;>>
> escreveu:
>
> > Hello people,
> >
> > There's a weird problem I would like to share with you.
> > I have the following scenario:
> >
> > MX104 -> L2 SW (1) -> L2 SW (2) -> MX80
> >
> > Both L2 SW are Extreme X460 and they're doing nothing except forwarding
> > frames at layer 2.
> >
> > In order to simplify our topology, we have changed the MX104 uplink to L2
> > SW (2) so the topology went to MX104 -> L2 SW (2) -> MX80.
> >
> > After that, the BGP sessions went up and all the traffic has returned as
> > expected, however I have three l2circuit connections (vlan-ccc mode) and
> > they went to "Down (OL)" status at one side and Up at another. In order
> to
> > reestablish them we had to do a rollback of the physical changes we did.
> >
> > As it just don't make any sense to me, I summon you experts to help me
> with
> > that, so we can try to figure out what went wrong.
> >
> > Additional details: I'm using LDP signaling at both sides. It' a point to
> > point L3 connection, so I have the loopback interfaces configured at both
> > sides and a /30 between them, also I have static routes to reach their
> > loopback interface's addresses.
> >
> > Any help will be appreciated.
> >
> > Cheers,
> > Caio
> > _______________________________________________
> > juniper-nsp mailing list juniper-nsp at puck.nether.net <javascript:;>
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>
> ------------------------------
>
> Message: 2
> Date: Sat, 21 Oct 2017 10:42:21 +0000
> From: Alexandre Guimaraes <alexandre.guimaraes at ascenty.com <javascript:;>>
> To: Rafael Ganascim <rganascim at gmail.com <javascript:;>>
> Cc: Caio <caiot5 at gmail.com <javascript:;>>, juniper-nsp <
> juniper-nsp at puck.nether.net <javascript:;>>
> Subject: Re: [j-nsp] l2circuit down one side/up another
> Message-ID: <727F7B43-688C-4DBF-9A6D-C7B6B32C1E5F at ascenty.com
> <javascript:;>>
> Content-Type: text/plain; charset="utf-8"
>
> Caio,
>
> Have you check something?
>
> Are these extremes let the signaling pass thru?
>
> att
> Alexandre
>
> Em 21 de out de 2017, ?(s) 07:54, Rafael Ganascim <rganascim at gmail.com
> <javascript:;><mailto:rganascim at gmail.com <javascript:;>>> escreveu:
>
> Just more checks:
>
> How is the MPLS forwarding table for the negotiated Labels for loopback and
> l2circuit?
> Are you using label PHP? Can you switch It off?
> Is the LDP adjacency up and exchanging labels?
> Are the l2circuit neighbors configured between loopback interfaces?
>
> Regards,
>
>
>
>
> Em 20 de out de 2017 8:26 AM, "Caio" <caiot5 at gmail.com <javascript:;>
> <mailto:caiot5 at gmail.com <javascript:;>>> escreveu:
>
> Hello people,
>
> There's a weird problem I would like to share with you.
> I have the following scenario:
>
> MX104 -> L2 SW (1) -> L2 SW (2) -> MX80
>
> Both L2 SW are Extreme X460 and they're doing nothing except forwarding
> frames at layer 2.
>
> In order to simplify our topology, we have changed the MX104 uplink to L2
> SW (2) so the topology went to MX104 -> L2 SW (2) -> MX80.
>
> After that, the BGP sessions went up and all the traffic has returned as
> expected, however I have three l2circuit connections (vlan-ccc mode) and
> they went to "Down (OL)" status at one side and Up at another. In order to
> reestablish them we had to do a rollback of the physical changes we did.
>
> As it just don't make any sense to me, I summon you experts to help me with
> that, so we can try to figure out what went wrong.
>
> Additional details: I'm using LDP signaling at both sides. It' a point to
> point L3 connection, so I have the loopback interfaces configured at both
> sides and a /30 between them, also I have static routes to reach their
> loopback interface's addresses.
>
> Any help will be appreciated.
>
> Cheers,
> Caio
> _______________________________________________
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>
> End of juniper-nsp Digest, Vol 179, Issue 20
> ********************************************
>