Re: [MPLS] One question about MAC Address Withdraw Message in RFC4762

[Luca Martini <lmartini at cisco.com>]

There is a typo in the second statement .
"MAC Address TLV" should read "MAC List TLV"

So you can send a MAC Address Withdraw Message with an mac list TLV with 
an empty list, or a MAC Address Withdraw Message with an mac list TLV 
with a list of MACs. Either way the MAC List TLV must be present.

Luca


vivienne wrote:
> Hi all,
>  
>
> I have one question about MAC Address Withdraw Message in RFC4762
>
>  
>
> RFC4762 say
>
> We introduce an optional MAC List TLV in LDP to specify a list of MAC 
>  addresses that can be removed or unlearned using the LDP Address 
> Withdraw Message.
>
>  
>
> And also say
>
> The MAC Address Withdraw Message contains a FEC TLV (to identify the 
> VPLS affected), a MAC Address TLV, and optional parameters.  No 
> optional parameters have been defined for the MAC Address Withdraw 
> signaling.
>
>  
>
> This two segment is  contradiction.
>
> The first  segment say that the MAC Address TLV is optional 
> parameters. But the second segment impliedly say that the FEC TLV and 
> the MAC Address TLV must be included .
>
>  
>
> Since the MAC Address Withdraw Message and Address Withdraw Message 
> used the same message type (0x0301).
>
> So my question is how to process the message which message type is 
> 0x0301 and  which TLV is mandatory when we parse this message .
>
>  
>
> Further question is,
>
> If Address list TLV is mandatory .Then how to fill the Address list 
> TLV for L2VPN, since the ip address is not usefule for L2VPN.
>
> If Address list TLV is not mandatory .Then how to fill MAC Address 
> Withdraw Message and Address Withdraw Message  when this remote peer 
> session is used not only for L2VPN but also for other application (for 
> example TE).
>
>  
>
>  
>
> Thanks and Regards
>
> Vivienne
>
>  
>
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>
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