Internet Connection is unstable on Cisco 2811

[Th3rryjean]

Dear Fellows,

I am new to cisco and don't have any certifications or whatsoever.

I recently wanted to add an additional interface to a CISCO 2811 router that is connected to an IPVPN network over fibre.  actually it succeded and now i have two Fastethernet ports 10.50.0.1 and 192.168.6.1 broadcasting internet.  But Since then, my browsers are loading very very slowly, though i get a throughput download speed of 600KPS for a 4MB line. The Browsing is ridiculous.  I paste below my config, please help me with it, i can't find the problem.  Warm thanks to you all

Building configuration...

Current configuration : 2284 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
no service dhcp
!
hostname INTERNETHOST
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$uDjD$mNItKrFQd08Dh7ZMI3GMa0
enable password !john123
!
aaa new-model
!
!
aaa authentication login default local
aaa authorization exec default local
!
!
aaa session-id common
!
!
ip cef
no ip dhcp use vrf connected
!
ip dhcp pool DHCP
   import all
   network 192.168.5.0 255.255.255.0
   dns-server 202.123.2.6 202.123.2.11
   default-router 192.168.5.1
   lease 0 2
!
ip dhcp pool stop
!
!
ip host Therry-pc 10.50.0.21
ip name-server 4.2.2.5
ip name-server 4.2.2.6
ip name-server 202.123.2.6
ip name-server 202.123.2.11
ip name-server 8.8.8.8
multilink bundle-name authenticated
!
!
!
username john privilege 15 password 0 john123
archive
 log config
  hidekeys
!
!
!
!
!
interface FastEthernet0/0
 description to Customer LAN
 ip address 10.50.0.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
 duplex auto
 speed auto
!
interface FastEthernet0/1
 description WAN Interface to IP CORE GPON port 0 6/2 MB
 no ip address
 load-interval 30
 duplex full
 speed 100
 pppoe enable
 pppoe-client dial-pool-number 1
!
interface FastEthernet0/0/0
 description $ES_LAN$
 ip address 192.168.6.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
 duplex full
 speed 100
!
interface Dialer1
 description PPPOE Session IPVPN_PRO_20250080
 ip address negotiated
 ip mtu 1452
 ip nat outside
 ip virtual-reassembly
 encapsulation ppp
 ip tcp adjust-mss 1452
 load-interval 30
 dialer pool 1
 dialer-group 1
 ppp chap hostname john@tplus
 ppp chap password 0 34sth
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer1
!
!
ip http server
ip http authentication local
ip dns server
ip nat inside source list 1 interface Dialer1 overload
!
access-list 1 permit 192.168.5.0 0.0.0.255
access-list 1 permit 10.50.0.0 0.0.0.255
access-list 1 permit 192.168.6.0 0.0.0.255
access-list 1 deny   192.168.5.0 0.0.0.255
dialer-list 1 protocol ip permit
snmp-server community john123 RO
!
!
control-plane
!
!
line con 0
 password !john123
line aux 0
line vty 0 4
 password !john123
 transport input all
!
scheduler allocate 20000 1000
!
end

[mmoulson1]

What are you using to measure your internet speed?

Remember it's Kilo Bytes Per Second vs. Kilo Bits Per Second ?

I would use a website like http://www.speedtest.net with no other devices using the connection to try and get an good idea of your line speed.

Your config looks OK! Maybe try a small office/home office device that will do PPPoE like a Linksys or Netgear or something from a friend to test if you think it's a hardware problem?

Hope that helps

Matty

[Jim Blake]

check that you are not being slowed down by a bad DNS server....

one works fine, the other not so good...for me, anyway, your mileage may vary where you are :)

use nslookup to check how it works. remember, while your raw download speed will be constrained by the capability of the line, when you browse, you are picking up links to lots of different sites, so issuing lots of DNS lookups and waiting for each response, so DNS speed is crucial....slow DNS = slow browse performance. See how it goes if you use Google's name servers: https://developers.google.com/speed/public-dns/docs/using

And I agree with mmoulson1, the config looks OK

Finally, for your own safety PLEASE sanitise your listings...I can see passwords, addresses, the whole nine yards...You make it easy for intruders :(