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Thread: Need to Outsource Part of a Project




Need to Outsource Part of a Project
user name
2006-09-14 12:33:01

Help!
I need someone who can write Microsoft Word macros in Visual Basic.
Client has a contract in Word, now he has one field that repeats on
all pages, and he doesn't want HIS customers to have to re-type that
field.
I need someone who can take this part of the project for me. Please
E-mail me off list (mhayese-ssentialservices.com)

__._,_.___
.

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DHCPv6 Relay Agent Link Selection(RALS) Opt ion
user name
2006-09-14 12:59:11
I agree with Andre. I can't see the need for this option.
 
The link-address field in the relay-forw message is addressing information for the server to use in determine where the client is (for address assignment/prefix-delegation purposes). There is ***NO*** requirement that this address be an address that the relay-agent has configured.
 
The address of relay agent is in either the peer-address field (if this isn't the first hop relay) or in the SOURCE address of the relay-forw packet. Thus, unlike in DHCPv4 where the giaddr field is overloaded to mean two things, that is NOT the case for DHCPv6.
 
Unless you can come up with a reason why the link-address field isn't sufficient, I can't see supporting this work.
 
- Bernie


From: Amy [mailto:zhaoyupinghuawei.com]
Sent: Wednesday, September 13, 2006 3:56 AM
To: 'Kostur, Andre'
Cc: dhcwgietf.org
Subject: RE: [dhcwg] [New I-D] DHCPv6 Relay Agent Link Selection(RALS) Opt ion

Hello,Kostur
    Thank you!
   
    Yes, it is a counterpart of DHCPv4 link-selection sub-option, so we used a similiar option name. And we missed it in the draft, sorry.
  
    I obtain the requirement from NetLMM Base protocol, the draft is still in progress.
              ;       +--------------------------------+
     ;           ;  |       ;    LMM Domain        ;   |
     ;           ;  |       ;           ;           ;   |
     ;           ;  |    +----+        ;   +----+     |
     ;           ;  |    |LMA |       ;    | LMA| ;    |
     ;           ;  |    +----+        ;   +----+     |
     ;           ;  |       \       ;        /       ; |
     ;           ;  |    **********************      |
     ;           ;  |   *       ;           ;    *     |
     ;           ;  |  *      IP network      ;  *    |
     ;           ;  |   *       ;           ;    *     |
     ;           ;  |    **********************      |
     ;           ;  |      /        |       ;  \      |
     ;           ;  |  +----+    +----+     +----+   |
     ;           ;  +--|MAG1|----|MAG2|-----|MAG3|---+
     ;           ;     +----+    +----+     +----+
      ;           ;       |       ;           ;  |
     ;           ;        |       ;           ;  |
     ;           ;      +---+ Movement      ;  +--+
          ;           ; |MN | ---->      ;     |CN|
          ;           ; +---+          ;       +--+
 
  When a mobile mode connects to the NetLMM infrastructure, it first needs to configure an address,i.e.NetLMM Address. This address is the invariant IP address on the MN inside the NetLMM domain. And the IPv6 link prefix of the NetLMM address comes from LMA, not MAG.
 
   From my understand, link-address field holds the address of the relay agent. And so, we think that only using link-address can not satisfy the above requirement.
 
  
From: Kostur, Andre [mailto:akosturincognito.com]
Sent: Wednesday, September 13, 2006 12:23 PM
To: Amy; dhcwgietf.org
Subject: RE: [dhcwg] [New I-D] DHCPv6 Relay Agent Link Selection(RALS) Opt ion

> -----Original Message-----
> From: Amy [huawei.com">mailto:zhaoyupinghuawei.com]
>
> We posted a new I-D as follows.  We would appreciate your comments.
>
> A New Internet-Draft is available from the on-line
> Internet-Drafts directories.
>
>
>       Title ;          : DHCPv6 Relay Agent Link Selection(RALS) Option
>       Author(s)    ;   : Y. Zhao
>       Filename      ;  :
> draft-zhao-dhc-dhcpv6-relay-link-selection-00.txt
>       Pages ;          : 16
>       Date   ;         : 2006-9-12


I don't understand the requirement for this draft.  From what I understand, this is to allow the Relay Agent to select the link/prefix from which to make an allocation.  This is basically a v6 version of the Link Selection Suboption for dhcpv4.  However, from my reading of RFC 3315, this functionality is already supported in the link-address field of the Relay-forward message:

      link-address   A global or site-local address that will be used by
           ;          the server to identify the link on which the client
           ;          is located.

What behaviours does this draft cover that the link-address field doesn't address?

DHCPv6 Relay Agent Link Selection(RALS) Option
user name
2006-09-15 03:37:46
Hi,Bernie:
  
   Thanks!
 
   On the first hop relay, according to Section 20.1.1. of rfc3315 , the link-address placed by first hop relay will be used by the   ; server to determine the link where the client is.
   But in IPv6, multiple subnet prefixes can be assigned to IP link, the link-address only can determine one subnet prefix. And Link-selection option can determine one or more seperated subnet prefixes.
 
 
    On the non-first hop relay, according to Section 20.1.2. of rfc3315, the link-address is either 0 (if If the source address from the IP datagram header of the received message is a global or site-local address) or a global or site-local address assigned to the interface on which the message was received.
  
           ;           ; relay-forward-1 ;           ;     relay-forward-2
   client----relay A--------------------NAS/relay B-----------------------server
 
   NAS,act as relay B, can get the information about the link(s) where the client is,but the link-address of relay-forward-2 ;can not be used as a hint to server
   Relay A just forwards the client-originated message to NAS,it can not determine where the client is, so the link-address of relay-forward-1 can not either.
 
   In this case, we can use link-selection option in relay-forward-2 as a hint to server.
 
B.R.
 
Amy Zhao


From: Bernie Volz (volz) [mailto:volzcisco.com]
Sent: Thursday, September 14, 2006 8:59 PM
To: Amy; Kostur, Andre
Cc: dhcwgietf.org
Subject: RE: [dhcwg] [New I-D] DHCPv6 Relay Agent Link Selection(RALS) Opt ion

I agree with Andre. I can't see the need for this option.
 
The link-address field in the relay-forw message is addressing information for the server to use in determine where the client is (for address assignment/prefix-delegation purposes). There is ***NO*** requirement that this address be an address that the relay-agent has configured.
 
The address of relay agent is in either the peer-address field (if this isn't the first hop relay) or in the SOURCE address of the relay-forw packet. Thus, unlike in DHCPv4 where the giaddr field is overloaded to mean two things, that is NOT the case for DHCPv6.
 
Unless you can come up with a reason why the link-address field isn't sufficient, I can't see supporting this work.
 
- Bernie


From: Amy [mailto:zhaoyupinghuawei.com]
Sent: Wednesday, September 13, 2006 3:56 AM
To: 'Kostur, Andre'
Cc: dhcwgietf.org
Subject: RE: [dhcwg] [New I-D] DHCPv6 Relay Agent Link Selection(RALS) Opt ion

Hello,Kostur
    Thank you!
   
    Yes, it is a counterpart of DHCPv4 link-selection sub-option, so we used a similiar option name. And we missed it in the draft, sorry.
  
    I obtain the requirement from NetLMM Base protocol, the draft is still in progress.
              ;       +--------------------------------+
       ;           |         ;  LMM Domain          ; |
       ;           |         ;           ;           ; |
       ;           |    +----+          ; +----+     |
       ;           |    |LMA |         ;  | LMA|   ;  |
       ;           |    +----+          ; +----+     |
       ;           |       \         ;      /        |
       ;           |    **********************      |
       ;           |   *         ;           ;  *     |
       ;           |  *      IP network        *    |
       ;           |   *         ;           ;  *     |
       ;           |    **********************      |
       ;           |      /        |         \      |
       ;           |  +----+    +----+     +----+   |
       ;           +--|MAG1|----|MAG2|-----|MAG3|---+
       ;           ;   +----+    +----+     +----+
        ;           ;     |         ;           |
       ;           ;      |         ;           |
       ;           ;    +---+ Movement      ;  +--+
 ;           ;          |MN | ---->      ;     |CN|
 ;           ;          +---+ ;           ;     +--+
 
  When a mobile mode connects to the NetLMM infrastructure, it first needs to configure an address,i.e.NetLMM Address. This address is the invariant IP address on the MN inside the NetLMM domain. And the IPv6 link prefix of the NetLMM address comes from LMA, not MAG.
 
   From my understand, link-address field holds the address of the relay agent. And so, we think that only using link-address can not satisfy the above requirement.
 
  
From: Kostur, Andre [mailto:akosturincognito.com]
Sent: Wednesday, September 13, 2006 12:23 PM
To: Amy; dhcwgietf.org
Subject: RE: [dhcwg] [New I-D] DHCPv6 Relay Agent Link Selection(RALS) Opt ion

> -----Original Message-----
> From: Amy [huawei.com">mailto:zhaoyupinghuawei.com]
>
> We posted a new I-D as follows.  We would appreciate your comments.
>
> A New Internet-Draft is available from the on-line
> Internet-Drafts directories.
>
>
>       Title ;          : DHCPv6 Relay Agent Link Selection(RALS) Option
>       Author(s)    ;   : Y. Zhao
>       Filename      ;  :
> draft-zhao-dhc-dhcpv6-relay-link-selection-00.txt
>       Pages ;          : 16
>       Date   ;         : 2006-9-12


I don't understand the requirement for this draft.  From what I understand, this is to allow the Relay Agent to select the link/prefix from which to make an allocation.  This is basically a v6 version of the Link Selection Suboption for dhcpv4.  However, from my reading of RFC 3315, this functionality is already supported in the link-address field of the Relay-forward message:

      link-address   A global or site-local address that will be used by
           ;          the server to identify the link on which the client
           ;          is located.

What behaviours does this draft cover that the link-address field doesn't address?

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