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mlaz
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L3 Loopback for testing

Tue Jul 07, 2020 1:12 pm

Hi,
Is it possible to set up the L3 loopback on the WAN interface of the device?
I mean such behaviour then IP-packets from specified source will be sent back to this source as a destination.
 
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anav
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Re: L3 Loopback for testing

Tue Jul 07, 2020 3:57 pm

Mumbo jumbo.
Not sure what you mean.

More specifically what is the use case.
No one buys a router to play games with traffic flow.
What do your users need?/
 
sindy
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Re: L3 Loopback for testing

Tue Jul 07, 2020 4:19 pm

You can use a dst-nat rule to redirect a received packet anywhere you want to, the dst-nat rule won't eject a small hand and smash you in the face each time it is asked to redirect a packet back to its source address. But I'm curious what the application should be.
 
mlaz
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Re: L3 Loopback for testing

Tue Jul 07, 2020 6:06 pm

Thanks all for reply.

It's an ordinary goal for me:
As ISP we have customers with Mikrotik devices as a CE (Customer Edge) router. But we haven't it as PE (Provider edge). Some times it is needed to test the traffic flow between CE and PE, or even between CE and another point on the Internet.
Usually, we use specialised Ethernet testers. One to set L3 or L2 loop at the CE site and another to generate and analyze traffic from our PE. But it takes a lot of time, that's why I'm looking the way to perform similar tests without sending a field engineer to the customer premises.
 
chubbs596
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Re: L3 Loopback for testing

Tue Oct 04, 2022 6:30 pm

Thanks all for reply.

It's an ordinary goal for me:
As ISP we have customers with Mikrotik devices as a CE (Customer Edge) router. But we haven't it as PE (Provider edge). Some times it is needed to test the traffic flow between CE and PE, or even between CE and another point on the Internet.
Usually, we use specialised Ethernet testers. One to set L3 or L2 loop at the CE site and another to generate and analyze traffic from our PE. But it takes a lot of time, that's why I'm looking the way to perform similar tests without sending a field engineer to the customer premises.
Im also looking for this, need it to running testing on a long distance 1Gbps NLD service,

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