Cisco 2911 router - cannot ping, traceroute external addresses
Hi there,
For some reason my Cisco 2911 has stopped pinging and tracerouting external addresses and domain names. I vaguely remember it was working and it stopped working right after the snow storms when we had power surges. Internal clients are at windows 8 and they can ping and resolve external addresses fine. The problem is my Meraki cisco devices have stopped continuous provision of internet as they see my cisco router 2911 as their default gateway.
The external connection to my router comes from a switch which basically is converting fiber to Ethernet (may this has gone bad)
I am sure since all my Meraki cisco wireless nodes were working fine. something had happened where I am unable to even ping or traceroute google.com from the router. Need help. Attached is my show run, note that all ip name servers had been given to me by my ISP and no major change has been made as things were working fine. Need help!
Cisco2911forEE.TXT
For some reason my Cisco 2911 has stopped pinging and tracerouting external addresses and domain names. I vaguely remember it was working and it stopped working right after the snow storms when we had power surges. Internal clients are at windows 8 and they can ping and resolve external addresses fine. The problem is my Meraki cisco devices have stopped continuous provision of internet as they see my cisco router 2911 as their default gateway.
The external connection to my router comes from a switch which basically is converting fiber to Ethernet (may this has gone bad)
I am sure since all my Meraki cisco wireless nodes were working fine. something had happened where I am unable to even ping or traceroute google.com from the router. Need help. Attached is my show run, note that all ip name servers had been given to me by my ISP and no major change has been made as things were working fine. Need help!
Cisco2911forEE.TXT
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naderz
One more question: what is interface GigabitEthernet0/1 connected to?
ASKER
cisco_2911#show ip int br | inc up
GigabitEthernet0/0 10.10.10.254 YES NVRAM up up
GigabitEthernet0/0.422 unassigned YES unset up up
GigabitEthernet0/0.425 10.10.13.254 YES NVRAM up up
GigabitEthernet0/1 unassigned YES NVRAM up up <<<<<........connected to fiber optic converter switch
GigabitEthernet0/1.420 xx.xx.xxx.xxx YES NVRAM up up <<<<....internet
GigabitEthernet0/1.801 10.10.11.254 YES NVRAM up up <<<....connection to other branch
NVI0 10.10.10.254 YES unset up up
1) Yes all my clients can access the internet, DHCP and DNS are provided by my local servers, DG=routercisco 2911
2) All meraki access nodes are connected to my Brocade switch 6450 which is connected to 'interface gig 0/0 of cisco 2911 router
3) correct interface 0/1.420 is internet
4)Just installed few VMware servers.
5) Yes my clients can ping the router at 10.10.10.254
6) ON the switch which is the fiber optic converter as well: port 4 is connected to my router and light is green while port 1 is nothing connected but its still green and on.
7) 0/1 is connected to the swtich from ISP (its brocade switch) on port 4 of switch.
I spoke to my ISP as well till now they have no answer as to how I am able to ping externally from my brocade switch and not from the router. Then we had the access list 101 taken off and were able to ping externally from the router. ISP guided its not the solution or answer as access list needs to stay. Still needs help.
GigabitEthernet0/0 10.10.10.254 YES NVRAM up up
GigabitEthernet0/0.422 unassigned YES unset up up
GigabitEthernet0/0.425 10.10.13.254 YES NVRAM up up
GigabitEthernet0/1 unassigned YES NVRAM up up <<<<<........connected to fiber optic converter switch
GigabitEthernet0/1.420 xx.xx.xxx.xxx YES NVRAM up up <<<<....internet
GigabitEthernet0/1.801 10.10.11.254 YES NVRAM up up <<<....connection to other branch
NVI0 10.10.10.254 YES unset up up
1) Yes all my clients can access the internet, DHCP and DNS are provided by my local servers, DG=routercisco 2911
2) All meraki access nodes are connected to my Brocade switch 6450 which is connected to 'interface gig 0/0 of cisco 2911 router
3) correct interface 0/1.420 is internet
4)Just installed few VMware servers.
5) Yes my clients can ping the router at 10.10.10.254
6) ON the switch which is the fiber optic converter as well: port 4 is connected to my router and light is green while port 1 is nothing connected but its still green and on.
7) 0/1 is connected to the swtich from ISP (its brocade switch) on port 4 of switch.
I spoke to my ISP as well till now they have no answer as to how I am able to ping externally from my brocade switch and not from the router. Then we had the access list 101 taken off and were able to ping externally from the router. ISP guided its not the solution or answer as access list needs to stay. Still needs help.
ASKER
ISP glitches. Works fine.