nexthop via (Re: bonding nezvysi rychlost prenosu?)

[David Trcka]

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On 28 Nov 2001, David Rohleder wrote:

> A navic network unreachable je podstatne lepsi hlaska nez RTNETLINK:
> invalid argument. IMHO ten prikaz prosel syntaktickym analyzatorem ip
> route, ale pak narazil na neexistenci routy na <gw1> nebo <gw2>
> 
Nenarazil:

[root na dave david]# /sbin/ip r
62.168.19.64/26 dev eth0  proto kernel  scope link  src 62.168.19.66 
127.0.0.0/8 dev lo  scope link 
default via 62.168.19.65 dev eth0 
[root na dave david]# /sbin/ip r a 10.0.0.0/24 nexthop via 62.168.19.67 
nexthop via 62.168.19.68
RTNETLINK answers: Network is unreachable

Musel narazit na neco jineho. Ale jak to zjistit? Z vypisu strace moc 
moudry nejsem, protoze se pouziva komunikace pres netlink socket (jsou tam 
same sendmsg,recvmsg) a konci to na

fstat64(4, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 2), ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
0) = 0x40017000
_llseek(4, 0, 0xbfffc7a0, SEEK_CUR)     = -1 ESPIPE (Illegal seek)
write(4, "RTNETLINK answers: Network is un"..., 42) = 42

a uplne stejne to konci pri pouziti "via <gw1> nexthop via <gw1>", jenom 
hlaska je jina.


- -- 
    David Trcka, network administrator
  PODA s.r.o., Internet Service Provider
Ostrava, 28. rijna 150, The Czech Republic
        Voice/Fax: +420 69 6612600
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"If everything is under control, you are moving too slow."
                          -- Mario Andretti

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