NSSA translate TYPE7->TYPE5

[Konrad Kręciwilk]

Hello

In practice AREA6 contains much more routes (about 150), I send a small 
segment. The same router (R1) has other area NSSA - AREA61:


bird> show ospf lsadb area 61

Area 0.0.0.61

  Type   LS ID           Router          Sequence   Age Checksum
  0001  xxx.127.92.5 xxx.127.92.5 800007fe   896    5975
  0003  0.0.0.0 xxx.127.92.5 800007e5   388    4a7f
  0001 xxx.127.92.237 xxx.127.92.237 800007fe   562    7087
  0007  10.1.0.0 xxx.127.92.237 800007e4   534    ec94
  0007  10.1.1.0 xxx.127.92.237 800007e4   534    e19e
  0007  10.2.1.0 xxx.127.92.237 8000066d   534    c730
  0007 xxx.110.206.252 xxx.127.92.237 800007e5   534    6e96

*show ospf state:*
*
*
     router 212.127.92.237
         distance 10
         router 212.127.92.5 metric 10
         stubnet 212.127.92.236/30 metric 10
         nssa-ext 10.1.0.0/24 metric2 20 via 212.127.92.237
         nssa-ext 10.1.1.0/24 metric2 20 via 212.127.92.237
         nssa-ext 10.2.1.0/24 metric2 20 via 212.127.92.237
         nssa-ext 79.110.206.252/30 metric2 20 via 212.127.92.237*
*


and same routes are not translated too:

root at R1:~# birdc show ospf lsadb | grep 10.1.1.0
  0007  10.1.1.0        212.127.92.237   800007e4   181 e19e
root at R1:~# birdc show ospf lsadb | grep 10.2.1.0
  0005  10.2.1.0        212.127.92.5     800005e3   546 e78d
  0007  10.2.1.0        212.127.92.237   8000066d   184 c730
root at R1:~#



In fact I have got 3 routers at AREA0 and about 6 routes with other 
areas (NSSA). On each of the routers (3) in the backbone (ABR) I 
observed a selective no-translation TYPE7 LSA to TYPE5 LSA.

I do a restart ospf protocol and for example (from AREA6) 10.19.80.0 
with has not been translated, Now it is:

root at R1:~# birdc show ospf lsadb | grep 10.19.80
  0005  10.19.80.255    212.127.92.5     80000001   505 36d8
  0007  10.19.80.255    212.127.92.253   800009c0   558 4ff5

but other routes is has not:

root at R1:~# birdc show ospf lsadb | grep 10.19.142
  0007  10.19.142.255   212.127.92.253   800009c0   585 a264
root at R1:~#

I set a debug ospf protocol OSPF before restart protocol I do not see 
strange.


Regards,
Konrad Kręciwilk

W dniu 14.07.2019 o 22:08, Ondrej Zajicek pisze:

>> Hello,
>>
>> I have problem with selective no-translation TYPE7 LSA to TYPE5 LSA on ABR.
>> Scheme: https://ibb.co/mhbxwmy
>
> Hello
>
> Just tested that, works for me (with routes from your example). What is
> your output of 'show ospf state'? Don't you have any suspicious messages
> in logs?
>
-- 
Pozdrawiam,
Konrad Kręciwilk
Inżynier sieci
Korbank S.A.
GSM: +48 883 131 165
tel: +48 71 735 15 31
e-mail: konrad.kreciwilk at korbank.pl

----
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