>"IP-ID fields in compressed base headers carry the compressed IP-ID
>of the innermost IPv4 header whose corresponding RND flag is not 1."
>This means for two IP headers (IP-ID field means the field in compressed >headers):
>IPv6/IPv6/UDP/RTP : No IP-ID field in compressed headers.
>IPv6/IPv4(RND=1)/UDP/RTP : No IP-ID field in compressed headers.
>IPv6/IPv4(RND=0)/UDP/RTP : The IP-ID field corresponds to the inner >header.
>IPv4(RND=1)/IPv6/UDP/RTP : No IP-ID field in compressed headers.
>IPv4(RND=0)/IPv6/UDP/RTP : The IP-ID field corresponds to the outer >header.
>IPv4(RND=1)/IPv4(RND=1)/UDP/RTP: No IP-ID field in compressed headers.
>IPv4(RND=1)/IPv4(RND=0)/UDP/RTP: The IP-ID field corresponds to the >inner header.
>IPv4(RND=0)/IPv4(RND=0)/UDP/RTP: The IP-ID field corresponds to the >inner header.
> This last case would only work if the >outer IP-ID
> is totally sequential N, N+1, >N+2...etc.
> (previous config should be used >instead)
>Crystal clear from RFC3095...=)
About Outer IP-ID field,it had clearly interpretation above。
About last config :IPv4(RND=0)/IPv4(RND=0)/UDP/RTP: The IP-ID field corresponds to the inner header.
This last case would only work if the outer IP-ID is totally sequential N, N+1, >N+2...etc.
(previous config should be used instead,I.E: use config IPv4 (RND=1)/IPv4 (RND=0)/UDP/RTP: The IP-ID field corresponds to the inner header.is it right?
My question is how to use the IP-ID in Extension 3 Outer IP header fields?when to use the IP-ID in Extension 3 Outer IP header fields?
Outer IP header fields
..... ..... ..... ..... ..... ..... ..... .....
| Type of Service/Traffic Class | if TOS2 = 1
..... ..... ..... ..... ..... ..... ..... .....
| Time to Live/Hop Limit | if TTL2 = 1
..... ..... ..... ..... ..... ..... ..... .....
| Protocol/Next Header | if PR2 = 1
..... ..... ..... ..... ..... ..... ..... .....
/ IP extension header(s) / variable,
..... ..... ..... ..... ..... ..... ..... ..... if IPX2 = 1
| IP-ID | 2 octets,
..... ..... ..... ..... ..... ..... ..... ..... if I2 = 1
br
wukai