[Babel-users] cornercase issue (link sensing)
Juliusz.Chroboczek at pps.jussieu.fr
Wed Apr 29 16:44:15 UTC 2009
> I believe I found an issue that might lead to unstable links in the
> corner case of two interfaces sharing the same broadcast domain:
> Since hellos on different interfaces are sent with different
> sequence numbers peer nodes might get very confused.
Babel version 1 had this problem, which is the main reason for the
incompatible version 2 protocol. In version 2, the neighbour is
identified with the link-local IPv6 address, so multiple adjacencies
between the same two nodes are okay.
> - Especially vlan setups often use the same mac address on many
If there's a MAC address collision in a single broadcast domain,
duplicate address detection at the IPv6 layer should disable one of the
two interfaces. (Or both, if there's a race condition.)
> BTW: Just noticed, that the config file parser is very unhappy about
> lines with trailing white space.
Thanks for the report, I'll look into it.
More information about the Babel-users