Another silly question

From: Wu, Jiang (wujiang@xxxxxxxxx)
Date: Mon Dec 04 2000 - 02:51:46 GMT-3


   
Hi group,
I am learning dlsw but I have no physical token ring interface in my routers. S
o don't laugh if it may be a simple question. I do not understand the function
of RIF passthru feature very well. What is the difference between RIF passthru
and RSRB? For example,
  ring#1---R1---R2---ring#2---R3---ring#3
R1 and R2 are dlsw peers, R3 works as SR bridge. Then hosts on ring#1 can visit
 those on #2 and #3. When the topology changes to
  ring#1---R1---R2---R3---ring#3
                          |
                       ring#2
R1 to R2 is the same. R2 and R3 are connected via RSRB. I GUESS the three rings
 can visit each other. But I am not sure if I need to configure two ring-groups
 on R2 for dlsw and rsrb. Forther more, if change R2 and R3 to dlsw peers, ring
#1 cannot visit #3 since R1 and R3 are not peers. I wonder if configuring RIF p
assthru for R2 and R3 can make hosts on ring#1 visiting #3.

Thanks in Advance,
Wu



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