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Re: route takes long time to give the table



--- "H. S." <greatexcalibur@yahoo.com> wrote:

> Apparently, _Riccardo Tortorici_, on 16/11/04
> 22:39,typed:
> > Check your iptables settings...I had this problem
> months ago...
> 
> What did you find your problem was? How did you
> solve it?
> 
> ->HS
> 
> 
> > H. S. wrote:
> > 
> >> On Debian Testing running 2.6.7,the 'route'
> command is taking 
> >> unusually long time to give the table:
> >> ~# time route
> >> Kernel IP routing table
> >> Destination    Gateway     Genmask         Flags
> Metric Ref    Use Iface
> >> x.y.z.z        *           255.255.255.255 UH   
> 0      0        0 ppp0
> >> 192.168.1.0    *           255.255.255.0   U    
> 0      0        0 eth0
> >> 192.168.0.0    *           255.255.255.0   U    
> 0      0        0 eth1
> >> default        x.y.z.z     0.0.0.0         UG   
> 0      0        0 ppp0
> >>
> >> real    0m20.010s
> >> user    0m0.002s
> >> sys     0m0.002s
> >>
> >>
> >> However, 'route -n' command gives the output
> almost instantly.
> >>
> >> Anybody else experiencing this? Any idea why this
> would be so?
> >>
> >> ->HS
> >>
> >>
> > 

When you type the command:
#route -n
you are telling to route that does not try to resolv
names. That's why it returns almost immediatly.
Nevertheless if your dns server is setup correctly it
does not have to take long time in fact the difference
is tiny:

# time route
Kernel IP routing table
Destination     Gateway         Genmask         Flags
Metric Ref    Use Iface
10.0.0.0        *               255.255.255.0   U    
0      0        0 eth1
192.168.0.0     *               255.255.255.0   U    
0      0        0 eth0
default         10.0.0.1        0.0.0.0         UG   
0      0        0 eth1

real    0m0.005s
user    0m0.000s
sys     0m0.000s
# time route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags
Metric Ref    Use Iface
10.0.0.0        0.0.0.0         255.255.255.0   U    
0      0        0 eth1
192.168.0.0     0.0.0.0         255.255.255.0   U    
0      0        0 eth0
0.0.0.0         10.0.0.1        0.0.0.0         UG   
0      0        0 eth1

real    0m0.003s
user    0m0.010s
sys     0m0.000s


Regards.




=====
--
Sergio Basurto J.

If I have seen further it is by standing on the 
shoulders of giants. (Isaac Newton)
--


		
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