shant Upadhyaya
Cc: vpp-dev@lists.fd.io
Subject: Re: [vpp-dev] Regarding IP Fragmentation
Prashant,
> Imagine a usecase where I am getting IP packets on my graph node.
> I encapsulate them into an outer IP and send them out.
> So let's say in my example, I get IP1 and IP2. IP1 is max
Prashant,
> Imagine a usecase where I am getting IP packets on my graph node.
> I encapsulate them into an outer IP and send them out.
> So let's say in my example, I get IP1 and IP2. IP1 is max mtu size and
> IP2 is a shorter one. Perhaps they themselves are part of a fragmented
> flow.
> I now e
Thanks Ole.
Imagine a usecase where I am getting IP packets on my graph node.
I encapsulate them into an outer IP and send them out.
So let's say in my example, I get IP1 and IP2. IP1 is max mtu size and
IP2 is a shorter one. Perhaps they themselves are part of a fragmented
flow.
I now encapsulate
Prashant,
> I have a usecase where I have two IP Datagrams, let's call them IP1,
> IP2. Each contains UDP Payload.
> IP1 size is bigger than mtu.
> IP2 size is lesser than mtu.
>
> I ship these both one after the other in that order to ip4-lookup.
>
> IP1 gets fragmented, as expected, to IP1.1 a
Hi,
I have a usecase where I have two IP Datagrams, let's call them IP1,
IP2. Each contains UDP Payload.
IP1 size is bigger than mtu.
IP2 size is lesser than mtu.
I ship these both one after the other in that order to ip4-lookup.
IP1 gets fragmented, as expected, to IP1.1 and IP1.2 and the fragm
Prashant,
> On 9 Nov 2018, at 01:39, Prashant Upadhyaya wrote:
>
> Hi Ole,
>
> Thanks for the information.
>
> Suppose my IP datagram gets fragmented into fragments F.1 and F.2, do
> these again get submitted to ip4-input ?
> I am trying to figure out the path in the graph from the time I subm
Hi Ole,
Thanks for the information.
Suppose my IP datagram gets fragmented into fragments F.1 and F.2, do
these again get submitted to ip4-input ?
I am trying to figure out the path in the graph from the time I submit
my v4 IP datagram to ip4-lookup.
What is crucial for me to know is if the fragm
> On 8 Nov 2018, at 23:26, Prashant Upadhyaya wrote:
>
> Hi,
>
> If I hand-construct an IP datagram (bigger than mtu) using chained
> vlib buffers and send this chain to ip4-lookup, would that be
> fragmented and sent out as per the mtu requirements of the interface
> from which the packet is
Hi,
If I hand-construct an IP datagram (bigger than mtu) using chained
vlib buffers and send this chain to ip4-lookup, would that be
fragmented and sent out as per the mtu requirements of the interface
from which the packet is determined to be sent out ? (assume that the
rx and tx sw_if_index is p
