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

[vivienne <wanglixing at huawei.com>]

 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




----- Original Message ----- 
From: "vivienne" <wanglixing at huawei.com>
To: "Luca Martini" <lmartini at cisco.com>
Cc: <mpls at lists.ietf.org>
Sent: Thursday, June 14, 2007 9:06 AM
Subject: Re: [MPLS] One question about MAC Address Withdraw Message in RFC4762


> Dear Luca,
> You mean that,
> I should send a MAC Address Withdraw Message with an mac list TLV with an empty list ,even this is a local session.
> Or I should send a MAC Address Withdraw Message with an Address list  TLV with an empty list ?
> 
> Actually I want to know whether I should fill the Address list  TLV and how to fill it  and whether the mac list TLV and FEC TLV is mandatory when this is remote session for L2VPN.
> BTW, I think it should not be filled the mac list TLV in local session for nomal LDP based on the RFC 3036.
> 
> 
> Thanks 
> Vivienne
> 
> ----- Original Message ----- 
> From: "Luca Martini" <lmartini at cisco.com>
> To: "vivienne" <wanglixing at huawei.com>
> Cc: <mpls at lists.ietf.org>
> Sent: Thursday, June 14, 2007 6:24 AM
> Subject: Re: [MPLS] One question about MAC Address Withdraw Message in RFC4762
> 
> 
> > 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
> > >
> > >  
> > >
> > > ------------------------------------------------------------------------
> > >
> > > _______________________________________________
> > > mpls mailing list
> > > mpls at lists.ietf.org
> > > https://www1.ietf.org/mailman/listinfo/mpls
> > >   
> > 
> > 
> 
> 
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