internet speeds capped at 120Kbps through cisco 2610xm routers

[dyekast]

hello  

I have Comcast internet, speed test through aaris surfboard sbg6700-ac is 90Mbps down 12Mbps up 16ms. when ran through my 3 cisco 2600 series routers and out the fa0/0 on r3 to my pc   I speed test at 120Kbps max... 

my aaris surfboard is in bridge mode to disable NAT as I wanted to set up NAT on my cisco routers

I do have internet connectivity..

my static route is 0.0.0.0 0.0.0.0 xxx.xxx.xx.xx      ---- x's being the modems ip.. which I had to get while it wasn't in bridge mode

I could not get connectivity across without this static route

ip route 0.0.0.0 0.0.00 fa0/0 did not work for me

I have fa0/0's set to duplex auto --- I have tried half and full as well

my incoming line to my R1 is set to ip address dhcp...   

I have tried no ip cef

my firewalls are off

there is no errors in my show interface    but I will post them  if someone wasn't to see them

below is my show runs

R1#sr
Building configuration...

Current configuration : 1307 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no network-clock-participate slot 1
no network-clock-participate wic 0
no aaa new-model
ip subnet-zero
ip cef
!
!
no ip domain lookup
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
 ip address dhcp
 ip nat outside
 duplex auto
 speed auto
!
interface Serial0/0
 bandwidth 10000000
 ip address 192.168.3.100 255.255.255.0
 ip nat inside
 clockrate 128000
 no fair-queue
!
interface Serial0/1
 bandwidth 256
 ip address 192.168.1.1 255.255.255.0
 shutdown
!
router eigrp 1
 redistribute connected
 redistribute static
 network 192.168.1.0
 network 192.168.3.0
 default-metric 10000 1 255 1 1500
 no auto-summary
!
ip nat inside source route-map ISP interface FastEthernet0/0 overload
ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 xx.xxx.xxx.xx
!
!
access-list 1 permit 192.168.2.0 0.0.0.255
access-list 1 permit 192.168.3.0 0.0.0.255
access-list 1 permit 192.168.4.0 0.0.0.255
!
route-map ISP permit 10
 match ip address 1
 match interface FastEthernet0/0
!
!
!
!
!
!
alias exec s show ip int br
alias exec sr show run
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
 login
!
!
!
end

--------------------------------------------------------------------------------------------------

R2(config)#do sr
Building configuration...

Current configuration : 1007 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
!
no network-clock-participate slot 1
no network-clock-participate wic 0
no aaa new-model
ip subnet-zero
ip cef
!
!
no ip domain lookup
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial0/0
 bandwidth 10000000
 ip address 192.168.2.1 255.255.255.0
 clockrate 128000
!
interface BRI0/0
 no ip address
 shutdown
!
interface Serial0/1
 bandwidth 10000000
 ip address 192.168.3.1 255.255.255.0
!
router eigrp 1
 redistribute static
 network 192.168.2.0
 network 192.168.3.0
 default-metric 10000 1 255 1 1500
 no auto-summary
!
ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 xx.xxx.xxx.xx
!
!
!
!
!
!
!
!
alias exec sr show run
alias exec s show ip int brief
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
 login
!
!
!
end

-------------------------------------------------------------------------------------

R3(config)#do sr
Building configuration...

Current configuration : 1008 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
!
no network-clock-participate slot 1
no network-clock-participate wic 0
no aaa new-model
ip subnet-zero
ip cef
!
!
no ip domain lookup
!
!
!
!
!
interface FastEthernet0/0
 ip address 192.168.4.1 255.255.255.0
 duplex auto
 speed auto
!
interface Serial0/0
 bandwidth 10000000
 ip address 192.168.1.100 255.255.255.0
 shutdown
 clock rate 56000
!
interface Serial0/1
 bandwidth 1280000
 ip address 192.168.2.100 255.255.255.0
!
interface Serial0/2
 no ip address
 shutdown
!
interface Serial0/3
 no ip address
 shutdown
!
router eigrp 1
 redistribute connected
 network 192.168.2.0
 network 192.168.4.0
 default-metric 10000 1 255 1 1500
 no auto-summary
!
ip http server
ip classless
!
!
alias exec s show ip int br
alias exec sr show run
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
 login
!
!
end

[Philip D'Ath · Accepted solution]

Are you sure traffic is not going through the serial ports?

 clockrate 128000

[dyekast]

I mean that's how my routers are connected so yes traffic is going through the serial ports.  But that is the highest it will allow me to set the clock....

[dyekast]

Is there a reason I can't set it higher?

[Philip D'Ath · Accepted solution]

It will be to do with the type of interface or cable being used.  Cisco 2600's are extremely old now.

Do you have to use serial interfaces?

A Cisco 897 is tremendously more capable and not too expensive ...

http://www.cisco.com/c/en/us/products/collateral/routers/800-series-routers/data_sheet_c78-519930.html

[dyekast]

I can purchase some more fast Ethernet cards for a couple dollars.  But I'm trying to use these.  As I already have them laying around and they work. im just doing this as a hobby for now. Low cost is everything.    Haha. I wonder if it's the cable or the card.  Or both.