| [Config] Problem with Cisco 2621xm Router and time outs Hi,
I'm currently having a problem connecting with a cable modem to my network, When connected through a cisco 2621xm router I get time outs and slow browsing however when directly connected to the cable modem We do not have any issues, I have looked over the configuration and dont see any problems. Thanks in advance.
I have the bandwidth set on interface fa0/1 set to 12000 which is the download rate of the cable modem.
Below is the the router config file.
!
! Last configuration change at 02:25:16 UTC Mon Dec 20 2010 by admin
! NVRAM config last updated at 02:25:20 UTC Mon Dec 20 2010 by admin
!
version 12.2
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname gateway
!
aaa new-model
enable password 7 847264727482373
!
username admin privilege 15 password 7 847264727482373
ip subnet-zero
no ip source-route
no ip gratuitous-arps
ip cef
!
!
no ip domain-lookup
ip domain-name home.local
!
no ip bootp server
!
!
!
!
!
!
!
!
interface Loopback0
ip address 127.0.0.1 255.255.255.0
!
interface FastEthernet0/0
description Vlan1 - Link to lan
ip address 10.10.10.254 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
duplex auto
speed auto
no cdp enable
!
interface FastEthernet0/1
description Connection to wan
bandwidth 12000
ip address dhcp
no ip redirects
no ip unreachables
no ip proxy-arp
ip accounting output-packets
ip nat outside
duplex auto
speed 100
no cdp enable
!
ip nat inside source list 1 interface FastEthernet0/1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 FastEthernet0/1
no ip http server
!
!
ip access-list extended inbound
deny ip 10.0.0.0 0.255.255.255 any
deny ip 127.0.0.0 0.255.255.255 any
deny ip 172.16.0.0 0.0.255.255 any
deny ip 192.168.0.0 0.0.255.255 any
permit tcp any any established
permit gre any any
permit udp any any
ip access-list extended outbound
permit tcp any any eq www
permit tcp any any
permit udp any any
permit icmp any any
permit gre any any
access-list 1 permit 10.0.0.0 0.255.255.255
no cdp run
snmp-server community public RO
snmp-server enable traps tty
!
!
!
!
!
alias exec ip sh ip int brief
alias exec run sh run
alias exec ver sh ver
!
line con 0
line aux 0
line vty 0 4
transport input telnet
!
scheduler allocate 20000 1000
ntp clock-period 17208084
ntp server 198.82.1.201
end |
|
| You've hard-coded the ethernet speed on FastEthernet 0/1, but not the duplex. I'd say that you also haven't done the same on the cable modem. It's very likely you've created an ethernet duplex mismatch.
Set FastEthernet0/1 for full auto-negotiation then retest. |
|
| Same issue after making those changes that was suggested. |
|
| Made changes to the configuration, current running config is this. and reflected configuration to pbrutsch's recommendations
!
! Last configuration change at 00:58:29 UTC Wed Dec 22 2010 by admin
! NVRAM config last updated at 00:58:31 UTC Wed Dec 22 2010 by admin
!
version 12.2
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname gateway
!
aaa new-model
enable password 7 847264727482373
!
username admin privilege 15 password 7 847264727482373
ip subnet-zero
no ip source-route
no ip gratuitous-arps
ip cef
!
!
no ip domain-lookup
ip domain-name home.local
!
no ip bootp server
!
interface Loopback0
ip address 172.16.1.254 255.255.255.0
!
interface FastEthernet0/0
description Vlan1 - Link to Local Network
bandwidth 12000
ip address 10.10.10.254 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
duplex auto
speed auto
!
interface FastEthernet0/1
description Connection to wan
bandwidth 12000
ip address dhcp
no ip redirects
no ip unreachables
no ip proxy-arp
ip accounting output-packets
ip nat outside
duplex auto
speed auto
no cdp enable
!
ip nat inside source list 1 interface FastEthernet0/1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 FastEthernet0/1
no ip http server
!
!
ip access-list extended inbound
deny ip 10.0.0.0 0.255.255.255 any
deny ip 127.0.0.0 0.255.255.255 any
deny ip 172.16.0.0 0.0.255.255 any
deny ip 192.168.0.0 0.0.255.255 any
permit tcp any any established
permit gre any any
permit udp any any
ip access-list extended outbound
permit tcp any any eq www
permit tcp any any
permit udp any any
permit icmp any any
permit gre any any
access-list 1 permit 10.0.0.0 0.255.255.255
snmp-server community public RO
snmp-server enable traps tty
!
line con 0
line aux 0
line vty 0 4
transport input telnet
!
scheduler allocate 20000 1000
ntp clock-period 17208082
ntp server 198.82.1.201
end |
|
nosx
join:2004-12-27
00000
kudos:5 | Does the cable modem remember the mac address of the PC?
Configure the router to spoof the MAC of the PC and see if it can dhcp an address then.
Does fa0/1 come up/up and run error free?
are packets going in and out?
Try powering off the cable modem for 5 minutes and then powering it back up when plugged into the router. |
|
| Looks like the problem has been resolved at this time, I removed
ip accounting output-packets and everything seems to work as normal.
Thanks for the help. |
|
| reply to MattAx
Was going to add removing the static route out the fa0/1 interface. Generally
if you're using DHCP on an interface, you don't need to set up the static
route.
Regards |
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