I'm having strange random connection failures. Are there ineffieciency in my config?
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08-27-2014 03:37 PM - edited 03-04-2019 11:38 PM
I've been having strange, random connection failures and I'm trying to eliminate possible causes.
What happens is while I'm browsing on the net over wifi, a link will at random not connect to the site, but instead fault to the ISP error page. It happens with highly reliable sites like google, or ebay, or whatever. If I direct connect to the cable modem, the problem site is immediately available.
I'm sitting <6 feet from a 871W router (with antenna). There's one router in my building and others are at my neighbors.
Below is the conf file. Just to imagine how rediculious this problem is, here's a screen shot from a web page. This shows a web page I visited, and after clicking on a link (an embedded youtube video), the error showed up within the page itself.
Why would only some URLs fail to connect? Is there inefficiencies in my config?
Building configuration...
Current configuration : 4750 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname TooterTurtle
!
boot-start-marker
boot-end-marker
!
logging buffered 51200 warnings
no logging console
!
aaa new-model
!
!
aaa authentication login default local
aaa authorization exec default local
!
!
aaa session-id common
clock timezone NewYork -5
clock summer-time NewYork date Apr 6 2003 2:00 Oct 26 2003 2:00
!
!
dot11 syslog
!
dot11 ssid TooterTurtle
vlan 2
authentication open
authentication key-management wpa
guest-mode
wpa-psk ascii 0 [my wifi password]
!
no ip source-route
no ip gratuitous-arps
ip cef
no ip dhcp use vrf connected
ip dhcp excluded-address 192.168.10.1 192.168.10.10
ip dhcp excluded-address 10.0.0.1 10.0.0.10
!
ip dhcp pool vlan1
import all
network 192.168.10.0 255.255.255.0
dns-server 192.168.10.1
default-router 192.168.10.1
domain-name Ethernet
!
ip dhcp pool vlan2
import all
network 10.0.0.0 255.255.255.0
domain-name WiFi
dns-server 10.0.0.1
default-router 10.0.0.1
!
ip dhcp pool MrWizard
host 192.168.10.100 255.255.255.0
hardware-address 0011.0917.66fa
client-name MrWizard
!
ip dhcp pool MasterShake
host 192.168.10.101 255.255.255.0
hardware-address 0022.681c.fbcc
client-name mastershake
!
!
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
no ip bootp server
ip domain name mydomain.com
ip ddns update method ccp_ddns1
HTTP
add [zone edit account and url]
remove [zone edit account and url]
!
!
!
!
username admin privilege 15 secret 5 [encrypted secret]
!
!
archive
log config
hidekeys
!
!
no ip ftp passive
ip ssh version 1
!
bridge irb
!
!
interface FastEthernet0
description AdminInterface
!
interface FastEthernet1
description MrWizard
!
interface FastEthernet2
description Belkin
!
interface FastEthernet3
!
interface FastEthernet4
description ComcastCableModem
ip address dhcp
ip verify unicast source reachable-via rx allow-default 100
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
ip virtual-reassembly
speed auto
full-duplex
!
interface Dot11Radio0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
!
encryption vlan 1 mode ciphers tkip
!
encryption vlan 2 mode ciphers tkip
!
ssid TooterTurtle
!
speed basic-1.0 basic-2.0 basic-5.5 basic-6.0 basic-9.0 basic-11.0 basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0
station-role root
!
interface Dot11Radio0.1
description TootersWiFi
encapsulation dot1Q 2
no cdp enable
bridge-group 2
bridge-group 2 subscriber-loop-control
bridge-group 2 spanning-disabled
bridge-group 2 block-unknown-source
no bridge-group 2 source-learning
no bridge-group 2 unicast-flooding
!
interface Vlan1
description EthernetOnly
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
ip virtual-reassembly
bridge-group 1
!
interface Vlan2
description WiFiOnly
no ip address
bridge-group 2
!
interface BVI1
description EthernetOnly
ip address 192.168.10.1 255.255.255.0
ip nat inside
ip virtual-reassembly
!
interface BVI2
description WiFiOnly
ip address 10.0.0.1 255.255.255.0
ip nat inside
ip virtual-reassembly
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 FastEthernet4
!
ip http server
ip http authentication local
no ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip dns server
ip nat inside source list 101 interface FastEthernet4 overload
ip nat inside source list 102 interface FastEthernet4 overload
ip nat inside source static tcp 192.168.10.100 80 interface FastEthernet4 80
!
ip access-list extended vlan1
deny ip 10.0.0.0 0.0.0.255 any
permit ip any any
!
access-list 100 permit udp any any eq bootpc
access-list 101 permit ip 192.168.10.0 0.0.0.255 any
access-list 102 permit ip 10.0.0.0 0.0.0.255 any
no cdp run
!
!
!
control-plane
!
bridge 1 protocol ieee
bridge 1 route ip
bridge 2 protocol ieee
bridge 2 route ip
!
line con 0
no modem enable
line aux 0
line vty 0 4
transport input telnet ssh
transport output telnet ssh
!
scheduler max-task-time 5000
end
- Labels:
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Other Routing

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08-27-2014 06:27 PM
Typically you only want one overload statement on the router. Another thing I would remove ip route 0.0.0.0 0.0.0.0 FastEthernet4. I know it sounds silly but when you set that interface to DHCP it creates a default route itself (not visible in config). I have experienced many strange issues similar to this one where routing will work and then stop working and other strange issues.
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09-12-2014 06:39 AM
I removed the ip router 0 0 to no great effect, which I consider to be a win.
I'm guessing that since overload is what--I understand--translates the one outside to the many inside IPs, that the suggestion to have only one overload configured means I should combine the two ip ranges into one.
I deleted 10.0.0.0 network. Changed the bridge references to 1 and vlan references to 1. Now wifi and ethernet should all be using the same internal network? That's the idea, right? Any more fat?
dot11 syslog
!
dot11 ssid TooterTurtle
vlan 1
authentication open
authentication key-management wpa
guest-mode
wpa-psk ascii 0 [my passphrase]
!
no ip source-route
no ip gratuitous-arps
ip cef
no ip dhcp use vrf connected
ip dhcp excluded-address 192.168.10.1 192.168.10.10
!
ip dhcp pool vlan1
import all
network 192.168.10.0 255.255.255.0
dns-server 192.168.10.1
default-router 192.168.10.1
domain-name Ethernet
!
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
no ip bootp server
ip domain name [my url]
ip ddns update method ccp_ddns1
HTTP
add http:...[zoneedit]
remove http:[zoneedit]
!
!
no ip ftp passive
ip ssh version 1
!
bridge irb
!
!
interface FastEthernet0
description AdminInterface
!
interface FastEthernet1
description MrWizard
!
interface FastEthernet2
description Belkin
!
interface FastEthernet3
!
interface FastEthernet4
description ComcastCableModem
ip address dhcp
ip verify unicast source reachable-via rx allow-default 100
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
ip virtual-reassembly
speed auto
full-duplex
!
interface Dot11Radio0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
!
encryption vlan 1 mode ciphers tkip
!
!
ssid TooterTurtle
!
speed basic-1.0 basic-2.0 basic-5.5 basic-6.0 basic-9.0 basic-11.0 basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0
station-role root
!
interface Dot11Radio0.1
description TootersWiFi
encapsulation dot1Q 2
no cdp enable
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 spanning-disabled
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
!
interface Vlan1
description EthernetOnly
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
ip virtual-reassembly
bridge-group 1
!
!
interface BVI1
description EthernetOnly
ip address 192.168.10.1 255.255.255.0
ip nat inside
ip virtual-reassembly
!
!
ip forward-protocol nd
!
ip http server
ip http authentication local
no ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip dns server
ip nat inside source list 101 interface FastEthernet4 overload
ip nat inside source static tcp 192.168.10.100 80 interface FastEthernet4 80
!
ip access-list extended vlan1
permit ip any any
!
access-list 100 permit udp any any eq bootpc
access-list 101 permit ip 192.168.10.0 0.0.0.255 any
no cdp run
!
!
!
control-plane
!
bridge 1 protocol ieee
bridge 1 route ip
!
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09-07-2014 11:32 AM
Hello
As you have RPF enabled I would NOT remove the default route as I am on the understanding RPF running I loose mode uses the default route -
Can you try-
1) remove the acl 100 from RPF
2) change the default route to
ip route 0.0.0.0 0.0.0.0 Dhcp
Lastly is this router connecting to a fw and if so does that fw have the correct licence for multiple user connections?
rs
paul
Please rate and mark as an accepted solution if you have found any of the information provided useful.
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Kind Regards
Paul
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09-07-2014 01:13 PM
Since FA4 is set to DHCP the ip route 0.0.0.0 0.0.0.0 dhcp is not needed. It will get the default route from ISP on DHCP request.
