[Ndn-interest] NFD-forwarding strategy retry

[Shanshan]

Hi Teng,

1)Why resend an Interest to the same outgoing face:

When a producer (single-homed) connects to (via one hop) an over a wireless channel, packets (Interest, Data, Nack) may get lost due to poor wireless link. I want to design a new forwarding strategy for the edge router/BS/AP for reliable communication at NDN fw layer rather than at link layer. In such case, the FIB entry only has one outgoing face.

2)and when:

In the above scenario, I want to design a new forwarding strategy for the edge router/BS/AP by setting a new timer (retransmission timer) for each PIT entry, and the retransmission timer is estimated by the RTT between each Interest and the corresponding Data belonging to the same flow. When the timer expires, the forwarding strategy retries this Interest to the same outgoing face. 

I also configure the Access Router Strategy and the ASF Strategy for the edge router/BS/AP in ndnSIM2.6, but neither implements Interest retransmission generated by the local node.

Shanshan




-----Original Messages-----
From:"Teng Liang" <philoliang at email.arizona.edu>
Sent Time:2018-09-29 02:57:53 (Saturday)
To: Shanshan <shishanshan at cstnet.cn>, ndn-interest at lists.cs.ucla.edu
Cc:
Subject: Re: [Ndn-interest] NFD-forwarding strategy retry



Hi Shanshan,

Can you be more specific on the why and when you want to resend an Interest to the same outgoing face?

Teng


On 9/26/18 12:05 AM, Shanshan wrote:

hi,community


I read the latest version of the nfd-developer-guide and I am not sure if it is allowed to retry the same Interest (generated by the local node rather than the consumer) via the same outgoing face. 


Thank you!


Best,
Shanshan.






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