Gongya,
I have responded to your query about this through the Zendesk ticket you submitted.
In the setup being used (vr-configs), it is not important that we used the same IP address because with the VPLS multihoming we have you configure, only one of the multihomes PEs to be active at a time so there will only be one connection to that IP at any given time. I don't necessarily think it is reality (or even good practice (I would choose to do it quite different)) to have this setup, but we reuse a lot of configurations from other parts of the SSB to simulate connections that may not be there or provide actual communication through you core. The VR device configurations are very complex and there is a lot going on there which makes it difficult to build unique configurations for each chapter and super lab individually..
Please let me know through the Zendesk ticket if my explanation provides some clarity for you on the setup.
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Josh Verhaal
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Original Message:
Sent: 08-19-2022 17:52
From: Unknown User
Subject: Multiple same IPs on a device
Recently I came across a scenario from Juniper Training Lab as follows: