jpwallens
asked on
T1 Router, 3Com 3016, setup got messed up as I can't reach any outside IP's as of 10am
I have a 3com 3016 router that has just stopped allowing internal ip's from reaching outside to the web. I can still vpn into the office but tracert's, pings, and browsers are completed prohibited from getting out.
In looking at the setup there is a LoopBack0, that I don't remember seeing before, that takes my side ip address and loops it back to a 127.0.0.1 address instead of hopping back to the providers ip address.
[my network] ------ ip address 165.236.1.6 [my router] 165.236.1.5 providers ip for me ------[www]
It seems to me that this loop back from 165.236.1.6 to 127.0.0.1 is keeping me from getting outside.
Here is a router-table.
Routing Tables:
Destination/Mask Proto Pref Metric Nexthop Interface
0.0.0.0/0 Static 60 0 165.236.1.5 Serial0:0
127.0.0.0/8 Direct 0 0 127.0.0.1 LoopBack0
127.0.0.1/32 Direct 0 0 127.0.0.1 LoopBack0
165.236.1.0/24 Direct 0 0 165.236.1.5 Serial0:0
165.236.1.4/30 Static 70 0 165.236.1.5 Serial0:0
165.236.1.5/32 Direct 0 0 165.236.1.5 Serial0:0
165.236.1.6/32 Direct 0 0 127.0.0.1 LoopBack0
192.168.1.0/24 Direct 0 0 192.168.1.1 Ethernet0
192.168.1.1/32 Direct 0 0 127.0.0.1 LoopBack0
I need help resolving the before the morning. Actually asap, thanks.
In looking at the setup there is a LoopBack0, that I don't remember seeing before, that takes my side ip address and loops it back to a 127.0.0.1 address instead of hopping back to the providers ip address.
[my network] ------ ip address 165.236.1.6 [my router] 165.236.1.5 providers ip for me ------[www]
It seems to me that this loop back from 165.236.1.6 to 127.0.0.1 is keeping me from getting outside.
Here is a router-table.
Routing Tables:
Destination/Mask Proto Pref Metric Nexthop Interface
0.0.0.0/0 Static 60 0 165.236.1.5 Serial0:0
127.0.0.0/8 Direct 0 0 127.0.0.1 LoopBack0
127.0.0.1/32 Direct 0 0 127.0.0.1 LoopBack0
165.236.1.0/24 Direct 0 0 165.236.1.5 Serial0:0
165.236.1.4/30 Static 70 0 165.236.1.5 Serial0:0
165.236.1.5/32 Direct 0 0 165.236.1.5 Serial0:0
165.236.1.6/32 Direct 0 0 127.0.0.1 LoopBack0
192.168.1.0/24 Direct 0 0 192.168.1.1 Ethernet0
192.168.1.1/32 Direct 0 0 127.0.0.1 LoopBack0
I need help resolving the before the morning. Actually asap, thanks.
I'm a Cisco guy, but I would guess that the "Direct" routes are automatically generated. Not added by anyone. The ones you would be looking at are the "Static" routes. Can you ping 165.236.1.5 from the router? 0.0.0.0 is the default route, meaning anything that can't go anywhere else will get sent to 165.236.1.5.
ASKER
Yes, the Direct routes are automatically generated.
No, I can't ping 165.236.1.5, even from the router.
So you're saying it's setup correctly. Which I know it was but how did it just stop working at 10am yesterday.?
No, I can't ping 165.236.1.5, even from the router.
So you're saying it's setup correctly. Which I know it was but how did it just stop working at 10am yesterday.?
ASKER
If I run a tracert to 165.236.1.5 the first hop goes to 192.168.1.1 and then the rest timeout.
Tracing route to 165.236.1.5 over a maximum of 30 hops
1 1 ms 1 ms 1 ms 192.168.1.1
2 * * * Request timed out.
3 * * * Request timed out.
4 * * * Request timed out.
5 * * * Request timed out.
Tracing route to 165.236.1.5 over a maximum of 30 hops
1 1 ms 1 ms 1 ms 192.168.1.1
2 * * * Request timed out.
3 * * * Request timed out.
4 * * * Request timed out.
5 * * * Request timed out.
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ASKER
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