Re: [bess] comment on draft-ietf-bess-ir

2015-09-02 Thread Lucy yong
Hi Jeffery, Let me clarify, I suggest to relax the second rule in Section 6.2, i.e. no need to require N to have exact same set of downstream neighbors in two tunnels. For example, if K1 has downstream neighbors n1~n10 and K2 has downstream neighbors n2-n10. N node can assign a single label for

Re: [bess] comment on draft-ietf-bess-ir

2015-09-02 Thread Lucy yong
Hi Eric, Please see below. -Original Message- From: Eric C Rosen [mailto:ero...@juniper.net] Sent: Tuesday, September 01, 2015 3:15 PM To: Lucy yong; Jeffrey (Zhaohui) Zhang; draft-ietf-bess...@tools.ietf.org Cc: bess@ietf.org Subject: Re: [bess] comment on draft-ietf-bess-ir > However,

Re: [bess] comment on draft-ietf-bess-ir

2015-09-02 Thread Jeffrey (Zhaohui) Zhang
Hi Lucy, If downstream neighbor n1 relies on IP forwarding, it can discard the packet associated with k2 after an IP lookup. But if it does not (e.g., it uses label switching - because it is a segmentation point and has its own downstream segment), then it won't be able to discard traffic and w

Re: [bess] comment on draft-ietf-bess-ir

2015-09-02 Thread Eric C Rosen
On 9/2/2015 9:47 AM, Lucy yong wrote: Let me clarify, I suggest to relax the second rule in Section 6.2, i.e. no need to require N to have exact same set of downstream neighbors in two tunnels. For example, if K1 has downstream neighbors n1~n10 and K2 has downstream neighbors n2-n10. N node can a

Re: [bess] comment on draft-ietf-bess-ir

2015-09-02 Thread Eric C Rosen
Hi Lucy, It is certainly true that the BGP route distribution mechanism is not optimal for multicast signaling. The advantages and disadvantages of using BGP for multicast signaling were discussed extensively in the WG when RFCs 6513 and 6514 were being written. But the entire mechanism is

Re: [bess] comment on draft-ietf-bess-ir

2015-09-02 Thread Lucy yong
Hi Eric, Please see inline below with [Lucy1] and green text. -Original Message- From: Eric C Rosen [mailto:ero...@juniper.net] Sent: Wednesday, September 02, 2015 9:59 AM To: Lucy yong; Jeffrey (Zhaohui) Zhang; draft-ietf-bess...@tools.ietf.org Cc: bess@ietf.org Subject: Re: [bess] c

Re: [bess] comment on draft-ietf-bess-ir

2015-09-02 Thread Lucy yong
Hi Jeffery, Please see inline below. From: Jeffrey (Zhaohui) Zhang [mailto:zzh...@juniper.net] Sent: Wednesday, September 02, 2015 9:10 AM To: Lucy yong; draft-ietf-bess...@tools.ietf.org Cc: bess@ietf.org Subject: RE: [bess] comment on draft-ietf-bess-ir Hi Lucy, If downstream neighbor n1 reli

Re: [bess] comment on draft-ietf-bess-ir

2015-09-02 Thread Lucy yong
Hi Jeffery, I did not complete the typing in previous mail, which makes unclear text. Revised text is inline below. From: Jeffrey (Zhaohui) Zhang [mailto:zzh...@juniper.net] Sent: Wednesday, September 02, 2015 9:10 AM To: Lucy yong; draft-ietf-bess...@tools.ietf.org