My apologies for mistakenly sending this email to this list.
Frank Renwick <email@example.com> wrote:
I learned a few
things today that I'll forget by tomorrow I'm sure:
1. DMVPN tunnels,
when the use IPSec, use IPSec transport mode. Transport mode simply takes
the IP Header of the original packet and uses that for the IP Header of the
IPSec tunnel. As such, ToS byte inheritance happens by default here.
I verified this using a DMVPN tunnel between Cisco hub and DDU
2. Cisco default
behavior for GRE tunnels is to take the ToS byte from the payload and use that
value in the ToS byte of the GRE IP Header.
3. The pt-to-pt
IPSec offering of the DDU, using IPSec tunnel mode, has the default behavior of
copying the ToS byte from the data being placed into the
No quiz on this