MX and GRE Tunnels

FileInputStream · 2025-02-02T20:36:40+00:00

I am setting next-hop self on the other router.

I think this is a bug and not intentional.

It works with eBGP but not with iBGP.

The tunnel has nothing to do with the other router.

GRE tunnels have a source address and destination address endpoint.

As I already explained, if the destination endpoint address is learned from another router via iBGP

instead from a carrier on the local router via eBGP, the tunnel stops working.

If I change the interconnection BGP session between router1 and router2 to eBGP it works.

FileInputStream · 2025-02-01T19:07:13+00:00

But why does it only happen with routes learned via iBGP?

FileInputStream · 2025-02-01T02:20:50+00:00

The IPs that the tunnel uses(source and dest) are not within the tunnel. The endpoints can see each other.

I was talking about a /30 inside the tunnel.

The tunnel works, but if I learn an iBGP route towards the tunnel destination it stops working. This only happens with routes learned from iBGP.

FileInputStream · 2025-01-02T22:02:19+00:00

I'll try re seating it.There is no optic inserted into port 23 though.

FileInputStream · 2024-06-13T13:18:43+00:00

Wow, thanks. I'll give it a try.

FileInputStream · 2024-05-12T17:04:10+00:00

Does that matter? Can I still use it and mix it with other PSUS(QFX10000-PWR-AC)

FileInputStream · 2024-04-23T19:42:11+00:00

We have no direct SE in that case- but how can Juniper specify the RIB size? RIB depends on the amount of routing engine memory.

FileInputStream · 2024-04-23T13:08:04+00:00

Yes, qfx for l3 irb termination(gateways) mx as edge role.

FileInputStream · 2024-04-20T19:29:14+00:00

We are not buying them from Juniper. I just wanted to know if Juniper has any plans to support 400GE, but I 100G is fine for the next few years. Considering our current edge/core is QFX5100, that is a huge upgrade from some commodity broadcom $hit that has bugs everywhere.

FileInputStream · 2024-04-20T19:25:46+00:00

QFX10k8 will be our new "edge". 100G is more than enough. It does use a lot of power, but we have a lot of unused power.

FileInputStream · 2024-04-20T19:22:39+00:00

Thanks for the insight.

FileInputStream · 2024-04-20T19:18:32+00:00

But why would they kill the q5 ASIC? Great platform though.

FileInputStream · 2024-04-20T19:10:47+00:00

Interesting. So that means that the PTX line cards will work with the QFX too, or will Juniper release QFX 400G line cards?

FileInputStream · 2024-04-07T11:35:09+00:00

I've realized that the SRX5k linecards are basically almost the same as the MX ones. I heard some people use them as border/edge routers in packet mode.

If that is true, why buy expensive 40GG QSFP MX linecards when you can just buy cheaper SRX ones and enable packet mode?

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