[cisco] Re: bgp export ????

da merci am inteles, eu credeam ca exporta daca are macar o subclasa in 
clasa specificata de network.

face asa daca ai "auto-summary" si "network <class B net>" si ai macar o 
subclasa din clasa B, in tabela de rutare. practic "zapaceala" mare este 
ca "auto-summary" nu are nimic cu sumarizarea/agregarea ci cu 
classfull/classless.

router bgp 65002
  no synchronization
  bgp log-neighbor-changes
  network 1.1.0.0
  neighbor 19.25.11.16 remote-as 20
  auto-summary

si am in tabela de rutare
      1.1.0.0/16 is variably subnetted, 51 subnets, 7 masks
C       1.1.11.0/24 is directly connected, FastEthernet0/1.7
C       1.1.250.0/24 is directly connected, FastEthernet0/1.6
O       1.1.7.0/24 [110/3] via 157.159.11.1, 00:36:04, FastEthernet0/1.7
O       1.1.10.0/24 [110/3] via 157.159.11.1, 00:36:04, FastEthernet0/1.7
O       1.1.8.0/24 [110/2] via 157.159.11.1, 00:36:04, FastEthernet0/1.7

iar exportul este:
    Network          Next Hop            Metric LocPrf Weight Path
*> 1.1.0.0      0.0.0.0                  0         32768 i

daca trec in "no auto-summary" nu mai exporta nimic, ca trece in 
classless si nu am ruta pe 1.1.0.0/16 in tabela

in fine, solutia finala este: fara network, redistribute ospf in bgp + 
route-map (rezulta vreo 200 bucatele de 24-30 din aceeasi /16) si 
aggregate summary-only in ce bucati de 18-20 vreau eu

C


Teodor Iacob wrote:

> Ce vrea sa iti spuna Dan este ca trebuie sa ai ruta in igp ( protocolul
> intern )
> fie ca e static sau dinamic pt. ca bgup sa ia in considerare networku, so
> pt. fiecare
> anunt care nu iti merge da un show ip route si vezi ce zice..  
> 
> 
> 
> --
>        Teodor Iacob,
> Manager Infrastructura Nationala
> Astral Telecom Internet
>  
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of Ciprian
> Niculescu
> Sent: Thursday, May 13, 2004 12:39 AM
> To: [email protected]
> Subject: [cisco] Re: bgp export ????
> 
> sigur :-)
> 
> rt-vthd(config-router)#do sh ip ro ospf | in 1.1.40
> O       1.1.40.0/25 [110/3] via 1.1.11.1, 1d08h, FastEthernet0/1.7
> O E2    1.1.40.160/28 [110/2] via 1.1.11.1, 1d08h, FastEthernet0/1.7
> O E2    1.1.40.176/28 [110/2] via 1.1.11.1, 1d08h, FastEthernet0/1.7
> O E2    1.1.40.128/27 [110/2] via 1.1.11.1, 1d08h, FastEthernet0/1.7
> O E2    1.1.40.192/26 [110/2] via 1.1.11.1, 1d08h, FastEthernet0/1.7
> 
> deci ar trebui sa intre in
> network 1.1.32.0 mask 255.255.224.0
> 
> C
> 
> 
> Dan Nae wrote:
> 
> 
>>Esti sigur ca ai rutele alea in tabela? un show ip route sa ne 
>>convingem si noi.
>>
>>Ciprian Niculescu wrote:
>>
>>
>>
>>>am o asamenea configuratie de ce nu export toate rutele????
>>>la randul meu rutele le invat prin ospf si sunt vreo 200 clase C, din 
>>>aceeasi subclasa B, care pana acum o anuntam pe toata si mergea,
>>>
>>>am incercat si cu "auto-summary", daca fac redistribute ospf in bgp 
>>>merge, si probabil apoi pot sa fac agregate
>>>
>>>ideii ceva???
>>>
>>>router bgp 65002
>>>no synchronization
>>>bgp log-neighbor-changes
>>>network 1.1.0.0 mask 255.255.248.0
>>>network 1.1.10.0 mask 255.255.255.0
>>>network 1.1.11.0 mask 255.255.255.0
>>>network 1.1.32.0 mask 255.255.224.0
>>>network 1.1.64.0 mask 255.255.192.0
>>>network 1.1.224.0 mask 255.255.248.0
>>>network 1.1.250.0 mask 255.255.255.0
>>>neighbor 19.25.11.16 remote-as 20xxx
>>>no auto-summary
>>>!
>>>rt-vthd#sh ip bgp neighbors 19.25.11.16 advertised-routes BGP table 
>>>version is 3683, local router ID is 10.9.0.1 Status codes: s 
>>>suppressed, d damped, h history, * valid, > best, i - internal,
>>>             r RIB-failure, S Stale
>>>Origin codes: i - IGP, e - EGP, ? - incomplete
>>>
>>>  Network          Next Hop            Metric LocPrf Weight Path
>>>*> 1.1.10.0/24  1.1.11.1             3         32768 i
>>>*> 1.1.11.0/24  0.0.0.0                  0         32768 i
>>>*> 1.1.224.0/21 1.1.11.40            5         32768 i
>>>*> 1.1.250.0/24 0.0.0.0                  0         32768 i
>>>
>>>
>>>
>>>
>>
>>
>>
>>
> 
> 
>