Subject: [mpls] commnets on draft-kini-mpls-spring-entropy-label

From: "S. Davari" <[email-masked]>
Date: Mon, 10 Nov 2014 12:45:34 -0800

Hi Authors,

As stated during this morning's IETF meeting, I wanted to suggest having an option to not use ELI to indicate EL and just signal having EL with the Tunnel Label. So existence of EL becomes a property of the Tunnel Label. This would reduce number of labels in the stack.

Thanks
Shahram

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From: "Carlos Pignataro (cpignata)" <[email-masked]>
Date: Mon, 10 Nov 2014 23:55:09 +0000

Hi, Shahram,

Do you mean — FAT PW style?

Thanks,

Carlos.

On Nov 10, 2014, at 10:45 AM, S. Davari <[email-masked]<mailto:[email-masked]>> wrote:

Hi Authors,

Thanks
Shahram
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From: "Nobo Akiya (nobo)" <[email-masked]>
Date: Tue, 11 Nov 2014 00:48:54 +0000

Hi Shahram,

As much as I like the idea of reducing labels from 2 to 1 to indicate a flow, I think there’s a synchronization issue between the ingress/egress, without ELI, to turn on/off the EL usage on a given LSP.

Thanks!

-Nobo

From: mpls [mailto:[email-masked]] On Behalf Of Carlos Pignataro (cpignata)
Sent: Monday, November 10, 2014 6:55 PM
To: S. Davari
Cc: [email-masked]
Subject: Re: [mpls] commnets on draft-kini-mpls-spring-entropy-label

Hi, Shahram,

Thanks,

Carlos.

Hi Authors,

Thanks
Shahram

---

From: Loa Andersson <[email-masked]>
Date: Tue, 11 Nov 2014 19:03:26 +0100

Sharam,

Is this something that you think is applicabel to draft-kini-mpls-
spring-entropy-label only or to entropy labels in general?

/Loa

On 2014-11-10 21:45, S. Davari wrote:
> Hi Authors,
>
> As stated during this morning's IETF meeting, I wanted to suggest having
> an option to not use ELI to indicate EL and just signal having EL with
> the Tunnel Label. So existence of EL becomes a property of the Tunnel
> Label. This would reduce number of labels in the stack.
>
> Thanks
> Shahram
>
>
> [email-masked]

---

From: Shahram Davari <[email-masked]>
Date: Tue, 11 Nov 2014 19:15:16 +0000

Hi Loa,

It should be applicable to entropy label in general. 

Thanks
Shahram

-----Original Message-----
From: mpls [mailto:[email-masked]] On Behalf Of Loa Andersson
Sent: Tuesday, November 11, 2014 10:03 AM
To: S. Davari; [email-masked]
Subject: Re: [mpls] commnets on draft-kini-mpls-spring-entropy-label

Sharam,

/Loa

---

From: John E Drake <[email-masked]>
Date: Tue, 11 Nov 2014 19:26:52 +0000

Shahram,

Given that not all ingresses support EL and that there is no signaling between a given ingress and the egress regarding EL, how is the egress to know whether a given packet contains an EL?

Sent from my iPhone

> On Nov 11, 2014, at 9:15 AM, Shahram Davari <[email-masked]> wrote:
> 
> Hi Loa,
>

---

From: Loa Andersson <[email-masked]>
Date: Tue, 11 Nov 2014 20:32:52 +0100

Sharam,

Then it is not a discussion that is hinged on the draft-kini-mpls-
spring-entropy-label. I will now go ahead and start the wg adoption
poll on the draft.

/Loa

-- 

Loa Andersson                        email: [email-masked]
Senior MPLS Expert                          [email-masked]
Huawei Technologies (consultant)     phone: +46 739 81 21 64

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From: Shahram Davari <[email-masked]>
Date: Tue, 11 Nov 2014 19:36:18 +0000

Hi Loa,

Although it is a general comment, but it is more exemplified in this draft since it proposes adding multiple EL in the stack making the stack very large.

Thx
SD

-----Original Message-----
From: Loa Andersson [mailto:[email-masked]] 
Sent: Tuesday, November 11, 2014 11:33 AM
To: Shahram Davari; S. Davari; [email-masked]
Subject: Re: [mpls] commnets on draft-kini-mpls-spring-entropy-label

Sharam,

/Loa

--

---

From: Shahram Davari <[email-masked]>
Date: Tue, 11 Nov 2014 19:47:03 +0000

HI John,

We could add the EL presence to the Label distribution signaling, similar to PW FAT label. I think  adding an EL indicator  to the signaling is preferred compared to increasing the Label stack depth.

Thx
Shahram

-----Original Message-----
From: John E Drake [mailto:[email-masked]] 
Sent: Tuesday, November 11, 2014 11:27 AM
To: Shahram Davari
Cc: Loa Andersson; S. Davari; [email-masked]
Subject: Re: [mpls] commnets on draft-kini-mpls-spring-entropy-label

Shahram,

Sent from my iPhone

---

From: Xuxiaohu <[email-masked]>
Date: Tue, 11 Nov 2014 19:51:14 +0000

SD,

Did you want to introduce an EL-specific negotiation mechanism between the ingress and the egress of a given LSP, i.e., the egress notifies the ingress of its ELC while the ingress informs the egress that it would insert an EL on that LSP? 

Best regards,
Xiaohu

-----邮件原件-----
发件人: mpls [mailto:[email-masked]] 代表 Shahram Davari
发送时间: 2014年11月12日 3:36
收件人: Loa Andersson; S. Davari; [email-masked]
主题: Re: [mpls] commnets on draft-kini-mpls-spring-entropy-label

Hi Loa,

Thx
SD

-----Original Message-----
From: Loa Andersson [mailto:[email-masked]]
Sent: Tuesday, November 11, 2014 11:33 AM
To: Shahram Davari; S. Davari; [email-masked]
Subject: Re: [mpls] commnets on draft-kini-mpls-spring-entropy-label

Sharam,

Then it is not a discussion that is hinged on the draft-kini-mpls- spring-entropy-label. I will now go ahead and start the wg adoption poll on the draft.

/Loa

On 2014-11-11 20:15, Shahram Davari wrote:
>> As stated during this morning's IETF meeting, I wanted to suggest 
>> having an option to not use ELI to indicate EL and just signal having 
>> EL with the Tunnel Label. So existence of EL becomes a property of 
>> the Tunnel Label. This would reduce number of labels in the stack.
>>
>> Thanks
>> Shahram
>>
>>

--

---

From: John E Drake <[email-masked]>
Date: Tue, 11 Nov 2014 19:51:39 +0000

We are dealing w/ mp2p and there is no way to identify the ingress.

Sent from my iPhone

> On Nov 11, 2014, at 9:47 AM, Shahram Davari <[email-masked]> wrote:
> 
> HI John,
>

---

From: Shahram Davari <[email-masked]>
Date: Tue, 11 Nov 2014 20:16:24 +0000

I see. Seems that in MP2P case ELI is required.

Thx
SD

-----Original Message-----
From: John E Drake [mailto:[email-masked]] 
Sent: Tuesday, November 11, 2014 11:52 AM
To: Shahram Davari
Cc: Loa Andersson; S. Davari; [email-masked]
Subject: Re: [mpls] commnets on draft-kini-mpls-spring-entropy-label

Sent from my iPhone