Overview: I have an internet connection that when connected directly to my pc, or through an abitrary SOHO wireless router, I can go to speedtest.net and pull down 11.5 Mbps and 3.0 Mbps up.
When I put the cisco router in between my laptop and the cable modem, I only get ~about~ 1.5 Mbps in either direction.
Is there something I don't know about max bandwidth/throughput for this device?
I noticed the problem on site at a customer location. They had cable internet, but were only pulling about .6 down and .8 up. By accident when performing a test on a another piece of equipment that circumvented the router, I noticed they were getting over 8.0 down. I ended up replacing the router in that location with an 1800 series and now they get their full speed and everything is great. However, I now have another location with the same issue; we just upgraded their internet to 6Mbps wireless, but they can only get a little under 1 going through the router. It is also a 2600. I brought the old router from the first location home, redid the config for my personal set up, and am experiencing the issue described above.
Here is the config as it was in the original location:
Current configuration : 2010 bytes
service timestamps debug datetime msec
service timestamps log uptime
enable secret 5 y
username x password 7 y
username x password 7 y
username x password 7 y
chat-script DialOut ABORT ERROR "" "AT" OK "ATDT \T" TIMEOUT 60 CONNECT \c
ip address 10.255.255.4 255.255.255.255
description GRE Tunnel to HQ
ip address 10.11.254.30 255.255.255.252
tunnel source Ethernet0/0
tunnel destination 172.16.0.254
description "Ethernet connection to GTA firewall 172.16.0.12/30"
ip address 172.16.0.14 255.255.255.252
description "x LAN 192.168.2.0/24"
ip address 192.168.2.1 255.255.255.0
no ip address
dialer pool-member 10
async mode dedicated
ppp authentication chap callout
ip address 10.100.100.26 255.255.255.252
no ip route-cache
no ip mroute-cache
dialer pool 10
dialer remote-name x
dialer idle-timeout 300
dialer string x
ppp authentication chap
router ospf 1
network 10.11.254.28 0.0.0.3 area 0
network 192.168.2.0 0.0.0.255 area 0
ip route 0.0.0.0 0.0.0.0 172.16.0.13
ip route 126.96.36.199 255.255.255.255 Dialer10
ip route 10.11.0.0 255.255.255.0 Dialer10 190
no ip http server
ip pim bidir-enable
dialer-list 1 protocol ip permit
snmp-server community public RO
line con 0
line aux 0
script dialer DialOut
modem autoconfigure type usr_sportster
transport input all
line vty 0 4
transport input pad v120 telnet rlogin udptn
no scheduler allocate
And here is the config as I have modified it to work at home connected directly to my cable modem:
router#show run Building configuration... Current configuration : 951 bytes ! version 12.2 service timestamps debug datetime msec service timestamps log uptime service password-encryption ! hostname router ! enable secret 5 y ! username x password 7 y username x password 7 y ip subnet-zero ! ! no ip domain-lookup ip name-server x ip name-server y ip name-server z ! ! ! ! interface Ethernet0/0 description "Connection from cisco to belkin" ip address dhcp ip nat outside full-duplex ! interface Ethernet0/1 description "laptop only network" ip address 192.168.3.1 255.255.255.0 ip nat inside full-duplex ! ip nat inside source list 1 interface Ethernet0/0 overload ip classless no ip http server ip pim bidir-enable ! access-list 1 permit 192.168.3.0 0.0.0.255 ! line con 0 login local line aux 0 flowcontrol hardware line vty 0 4 login local transport input pad v120 telnet rlogin udptn ! end
In both instances, the core issue is the same. The bandwidth I can get is no where near what I can get when the router is not in play. Any suggestions?
It might provide helpful information if you would post the output of show ip interface from your router. One thing I am wondering about is whether the router is process switching packets or if one of the better switching paths is being used.
I would observe that the version of IOS that you are running is old. I wonder if a more recent version of IOS would have corrected some bugs and might have improved performance. But from your description of the history of the router I also wonder if a code upgrade is feasible (do you have a maintenance contract for this router)?
I also wonder about the possibility of duplex mismatch causing poor performance. I notice that both of your interfaces are hard coded for full duplex. This prevents any negotiation of duplex on both interfaces. It is possible that whatever you are connected to (on either or both interfaces) was not able to negotiate and defaulted to half duplex. Duplex mismatch such as I have described will certainly impact performance. I would suggest changing the configuration of both interfaces to enable negotiation of duplex. Give it a try and let us know if things get better.