[j-nsp] EX4550 L2Circuit/VPN to MX80/lt Interface

[Raphael Mazelier]

Le 10/11/2014 21:18, Hugo Slabbert a écrit :
>
>
> Correct. I think I see Rafael's issue, though. He has a mix of 
> predominantly MPLS (probably L3VPN) customers that terminate L3 on the 
> EX, which can handle that because that's internal routes only, not 
> full tables. He also has a few transit customers coming through the 
> EX, though. The EX (unlike the MX) can't handle a mix of L2 and L3 on 
> the same port. His MX-EX touchdown is currently L3 on the EX in order 
> to support his MPLS customers. He would need that EX port in L2 in 
> order to carry customer VLANs through to the MX.  If he does that, 
> though, he'd need his L3 on the EX on VLAN interfaces, and per his 
> comment:
>

That's exactly my use case.

> ...that's apparently not supported, which means his MPLS customer 
> setup would break in order to support switching his transit customers 
> through the EX to the MX.
>

Yes, and I have very few transit customers compared to my 'l3vpn' 
customers.

> I haven't done the L2VPN setup to LTs that you're working with, 
> Rafael, so I can't help you out there. An alternative may be to move 
> your L3 and MPLS config from the EX to the MX, but that has a bunch of 
> downsides (loads up your 10G link with additional traffic that would 
> have been only on the EX's backplane before; maintenance hit for 
> moving all of the config; changes topology; more load on the MX80; etc).
>
Yep moving my L3 and MPLS config to the MX is not an option. The main 
reason is because my EX are double attached to two MX. I can handle the 
lost of one EX with no problem (aside my transit cust, but that is 
marginal).

> Aside from that, I'll bow out for someone that might have worked with 
> the LT setup you're attempting.
>

It's frustrating because I think I'm very close, since the 
L2vpn/L2circuit comes up. I will try to capture the traffic to see what 
happen (some encapsulation problem).
And even if the correct solution is to force my transit customer to use 
ebgp multihop, I need this plan B solution for some customers I cannot 
contact (sigh)...


-- 
Raphael Mazelier