Re: [bess] FW: Regarding the Alias label usage in EVPN Multihoming

[chalapathi andhe <[e-mail]>]

>
> Hi All,
>
>
>
> Can you please help us on the following issue.
>
> In the following diagram, PE1, PE2, PE3 are connected to the same ES [ES1]
> in Single active mode, and PE4 is a remote PE.
>
> Let’s say PE1 is advertising the MAC1 route, PE4 will install the MAC1
> with the PE1 as primary path with MAC Label,
>
> and PE2, PE3 as backup with the Alias Label. Now if the PE1 to CE1 link
> goes down, then PE1 withdraw the EAD/ES route
>
> which will be processed by PE4.
>
> Now what should the forwarding state at PE4 ?, PE4 should update the
> forwarding state of MAC1 with the PE2, PE3 Alias label
>
> and any traffic destined to MAC1 should be flooded to PE2, PE3 with the
> Alias labels ?
>
> Or packet should be flooded to PE2, PE3 with the Flood labels ? Or should
> it be some other method ?
>
>
>
> In similar if the ES is operating in all active mode, what should be the
> forwarding state at PE4 ?
>
> PE4 should update the forwarding state of MAC1 with the PE2, PE3 Alias
> label
>
> and any traffic destined to MAC1 should be sent to either PE2 or PE3 with
> the Alias labels [ not flood to both] ?
>
> Or packet should be flooded to PE2, PE3 with the Flood labels  or Alias
> Label ?
>
> Or should it be some other method ?
>
>
>
>
>
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>
>
>
> Thanks,
>
> Chalapathi.
>