We just went to a 10Mbps pipe, which comes through the ISP's fiber box to an ME3400. From there, there is an Ethernet connection to a 2850 screening router. When I plug a laptop directly into the 3400 or into the inside interface of the 2850, I get 11Mbps consistently from many speed test sites. Once I plug the inside interface into a Catalyst 2950, the speed at any of the ports drops to less the 2Mbps or even below 1Mbps. Both the port on the 2950 and the 2850 are set to 100 Full. Here is the configuration for the switch:
Current configuration : 3227 bytes
!
! Last configuration change at 12:17:52 CDT Wed Sep 12 2007
! NVRAM config last updated at 08:03:38 CDT Tue Sep 11 2007
!
version 12.1
no service pad
service timestamps debug datetime localtime show-timezone
service timestamps log datetime localtime show-timezone
service password-encryption
!
hostname XXX
!
no logging console
enable secret
enable password 7
!
clock timezone CST -6
clock summer-time CDT recurring
ip subnet-zero
no ip source-route
no ip domain-lookup
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
interface FastEthernet0/1
description Connection to New/Upgraded OSR
switchport mode access
no ip address
duplex full
speed 100
no cdp enable
spanning-tree portfast
!
interface FastEthernet0/2
description Connection to Master NetScreen Firewall (PFX-LCLNSC01)
switchport mode access
no ip address
duplex full
speed 100
no cdp enable
spanning-tree portfast
!
interface FastEthernet0/3
description Connection to Backup NetScreen Firewall (PFX-LCLNSC02)
switchport mode access
no ip address
duplex full
speed 100
no cdp enable
spanning-tree portfast
!
interface FastEthernet0/4
description Reserved for Future Use
switchport mode access
no ip address
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/5
switchport mode access
no ip address
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/6
switchport mode access
no ip address
duplex full
speed 10
no cdp enable
!
interface FastEthernet0/7
description Unknown Device (Unknown IP)
switchport mode access
no ip address
duplex half
speed 10
no cdp enable
!
interface FastEthernet0/8
description Unknown Device
switchport mode access
no ip address
duplex half
speed 10
no cdp enable
!
interface FastEthernet0/9
description Web Camera
switchport mode access
no ip address
duplex full
speed 100
no cdp enable
!
interface FastEthernet0/10
description FTP Server
switchport mode access
no ip address
duplex half
speed 10
no cdp enable
!
interface FastEthernet0/11
switchport mode access
no ip address
duplex half
speed 10
no cdp enable
!
interface FastEthernet0/12
description Connection to new Router
switchport mode access
no ip address
duplex full
speed 100
no cdp enable
spanning-tree portfast
!
interface Vlan1
ip address 74.143.XX.XX 255.255.255.224
!
ip default-gateway 74.143.XX.XX
no ip http server
!
access-list 1 remark
access-list 1 remark -- Permit Telnet from virtual IP address of locations Netscreen FW.s to OSR
access-list 1 permit 74.143.XX.XX
access-list 1 deny any
access-list 2 remark
access-list 2 remark Permit MOC Solarwinds Server Access
access-list 2 permit 159.54.XX.XX
access-list 2 deny any
no cdp run
snmp-server community
snmp-server community
!
line con 0
password 7
line vty 0 4
access-class 1 in
password 7
login
line vty 5 15
access-class 1 in
password 7
login
!
ntp clock-period 17180043
ntp server 159.54.XX.XX
end
The default gateway is set to point to the inside interface of the router.
I have talked to various people but nobody can give a definitive answer. Thanks for any help.
