01-18-2014 06:03 AM - edited 03-05-2019 06:51 AM
Hello everyone!
I ave this kind of problem on my 877W router:
The router is connected to ISP throuth its FE0 interface because I have a cable internet:
!
interface FastEthernet0
end
!
interface Vlan1
no ip address
no ip redirects
bridge-group 1
bridge-group 1 spanning-disabled
end
interface BVI1
mac-address ####.####.####
ip address dhcp
ip directed-broadcast
ip flow ingress
ip nat outside
ip virtual-reassembly
zone-member security OUTSIDE
end
I have done this way because router doesn't have a routable switchport and plus I have to use MAC address to get ISP's IP address.
ok, internal network is connected through its FE1 interface and IP addres is set on VLAN 2 interface.
interface Vlan2
ip address 192.168.2.1 255.255.255.0
no ip redirects
ip directed-broadcast
ip flow ingress
ip nat inside
ip virtual-reassembly
zone-member security INSIDE
end
There's nothing else connected to the router.
Now problem is that the router stops responding from outside world after some inactivity period. eg if I shutdown computers inside internal (VLAN 2) network, then in some period of time the router stops accepting anything on WAN interface.
As soon as I turn on something in VLAN 2 network, it goes back as normal. Do I need to play with keepalive command, and if yes, where?
I need your help!
thanks
01-19-2014 12:15 AM
Hello.
How do you check that router is not responding?
My guess:
You might be trying to connect to some IP-address that is NATed into VLAN2 address.
After VLAN2 goes down, you can't connect to inside interface.
01-19-2014 05:39 AM
Nope, I'm trying to connect to the router itself, of course I can't reach anything inside VLAN 2 interface when WAN is down.
01-19-2014 08:49 AM
Hello.
What IP-address are you using to connect to the router?
What is your address during the test?
Do you have any NAT translations configured for th IP-address?
What does show log say?
01-19-2014 11:22 AM
I'm trying to connect using WAN interface IP address, from outside, there's no ping. As soon as something is turned on inside network it pings again.
of course I have NAT configured. I think that the FE0 or BVI interface goes down after inactivity period and goes up if NAT activates from inside network.
I think I need to log in to the router by console and check exactly which interface going down.
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