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Kurogane
n00b
Joined: 23 May 2010
Posts: 44
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 Posted: Mon Sep 24, 2012 8:31 pm Post subject: Network issue |
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Hi folks.
I'm having problem to setup my network
Here's the scenario:
/etc/conf.d/net
| Code: | config_eth0="172.16.77.42/24"
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route -n
| Code: | # route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
127.0.0.0 127.0.0.1 255.0.0.0 UG 0 0 0 lo
172.16.77.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
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| Code: | ping -c5 172.16.0.254
PING 172.16.0.254 (172.16.0.254) 56(84) bytes of data.
64 bytes from 172.16.0.254: icmp_req=1 ttl=64 time=0.363 ms
64 bytes from 172.16.0.254: icmp_req=2 ttl=64 time=0.215 ms
64 bytes from 172.16.0.254: icmp_req=3 ttl=64 time=0.201 ms
64 bytes from 172.16.0.254: icmp_req=4 ttl=64 time=0.243 ms
64 bytes from 172.16.0.254: icmp_req=5 ttl=64 time=0.260 ms
--- 172.16.0.254 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3999ms
rtt min/avg/max/mdev = 0.201/0.256/0.363/0.058 ms
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If i have this configure i can ping my network, but i dont have internet because i can't add gateway with this configuration becuase /24, if i try to add manually my gw give me this error
| Code: | # ip route add 172.16.0.0/16 via 172.16.0.254 dev eth0
RTNETLINK answers: No such process |
If i add this config
/etc/conf.d/net
| Code: | config_eth0="172.16.77.42/16"
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| Code: | | # ip route add 172.16.0.0/16 via 172.16.0.254 dev eth0 |
route -n
| Code: | # route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
127.0.0.0 127.0.0.1 255.0.0.0 UG 0 0 0 lo
172.16.0.0 172.16.0.254 255.255.255.0 UG 0 0 0 eth1
172.16.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
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| Code: | # ping -c5 172.16.0.254
PING 172.16.0.254 (172.16.0.254) 56(84) bytes of data.
From 172.16.77.42: icmp_seq=1 Destination Host Unreachable
From 172.16.77.42: icmp_seq=2 Destination Host Unreachable
From 172.16.77.42: icmp_seq=3 Destination Host Unreachable
From 172.16.77.42: icmp_seq=4 Destination Host Unreachable
From 172.16.77.42: icmp_seq=5 Destination Host Unreachable
--- 172.16.0.254 ping statistics ---
5 packets transmitted, 0 received, +5 errors, 100% packet loss, time 4002ms
pipe 4
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I can add gw but i can't ping my network so i don't know what i do wrong? |
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DONAHUE
Watchman
Joined: 09 Dec 2006
Posts: 7651
Location: Goose Creek SC
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| Posted: Mon Sep 24, 2012 10:45 pm Post subject: |
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oops
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Defund the FCC.
Last edited by DONAHUE on Mon Sep 24, 2012 10:47 pm; edited 1 time in total |
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wcg
Guru
Joined: 06 Jan 2009
Posts: 588
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| Posted: Mon Sep 24, 2012 10:46 pm Post subject: |
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I have this in /etc/conf.d/net:
| Code: |
routes_eth0="default via [inside ip address of router on my lan]"
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At boot, the system enables a default route through that ip address.
Do you not have this in your /etc/conf.d/net file?
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Mad Merlin
Veteran
Joined: 09 May 2005
Posts: 1155
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| Posted: Tue Sep 25, 2012 4:20 am Post subject: Re: Network issue |
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| Kurogane wrote: | Hi folks.
I'm having problem to setup my network
Here's the scenario:
/etc/conf.d/net
| Code: | config_eth0="172.16.77.42/24"
|
route -n
| Code: | # route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
127.0.0.0 127.0.0.1 255.0.0.0 UG 0 0 0 lo
172.16.77.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
|
| Code: | ping -c5 172.16.0.254
PING 172.16.0.254 (172.16.0.254) 56(84) bytes of data.
64 bytes from 172.16.0.254: icmp_req=1 ttl=64 time=0.363 ms
64 bytes from 172.16.0.254: icmp_req=2 ttl=64 time=0.215 ms
64 bytes from 172.16.0.254: icmp_req=3 ttl=64 time=0.201 ms
64 bytes from 172.16.0.254: icmp_req=4 ttl=64 time=0.243 ms
64 bytes from 172.16.0.254: icmp_req=5 ttl=64 time=0.260 ms
--- 172.16.0.254 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3999ms
rtt min/avg/max/mdev = 0.201/0.256/0.363/0.058 ms
|
If i have this configure i can ping my network, but i dont have internet because i can't add gateway with this configuration becuase /24, if i try to add manually my gw give me this error
| Code: | # ip route add 172.16.0.0/16 via 172.16.0.254 dev eth0
RTNETLINK answers: No such process |
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Your ping here shouldn't work, you don't have a default route and you don't have any routes to reach 172.16.0.254 with. Additionally, I would expect the route add to fail, again, because you don't have a route to the suggested gateway.
When you do this:
| Code: |
config_eth0="172.16.77.42/16"
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172.16.0.254 becomes directly routable and you can ping it without adding additional routes. If you are in fact on a /16 subnet, then this is what you should do, no additional routing necessary.
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Game! - Where the stick is mightier than the sword! |
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