Hi all,
I'm scratching my head over this one and I'm sure the answer is very simple.  I 
have four routers:

R1 --- R2
|      |
|      |
R3 --- R4

R1 and R2 are L1/L2 routers.  R3 and R4 are L1-only routers.  Due to IOS's 
inability to do MD5 authentication at level 2, I cannot make R3 and R4 L1/L2 
routers.  R1 and R2 are running 9.6R3.8.  Now the problem...

I have 'interface lo0.0 passive' configured on both R1 and R2.  The loopback is 
being injected into the L1 level, then being re-injected back into the L2 level 
when it's seen from R3 and R4.  I've tried messing with the preference values 
for level 2 on R1 and R2, but the loopbacks are always being preferred through 
the L1 level.  If I configure 'interface lo0.0 level 1 disable' on R1 and R2, 
the loopbacks disappear, but then I end up with BGP recursive route lookups 
from R3 and R4.  I'd prefer not to configure static routes for the R1 and R2 
loopbacks on R3 and R4, but that seems to be my only recourse at this point.

Am I missing something simple here or am I just going to have to do the static 
routes on R3 and R4, redistribute those between R3 and R4, but deny their 
redistribution up to level 2?

Thanks,
evt

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