Routing between subnets using Windows XP Pro SP2

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    PLCDave
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    #143336

    Here is an illustration showing what I’m trying to accomplish:

    10hw1oh.jpg

    The PCS computer (lower right) needs to be able to send email alerts. I’ve issued the following on PCS:

    route -p add 192.168.50.0 netmask 255.255.255.0 192.168.254.2

    From PCS I can ping 192.168.50.50, but no other members of that subnet.
    I must be missing a route or a default gateway somewhere. The route tables from both PCS and DB are below.

    Any help would be greatly appreciated.

    Dave

    Code:
    [FONT=Courier New]# The Setup:[/FONT]
    [FONT=Courier New]# “”””””””””[/FONT]
    [FONT=Courier New]# Computer IPs Gateway[/FONT]
    [FONT=Courier New]# ———- —————————————— ————[/FONT]
    [FONT=Courier New]# PCS 192.168.254.1[/FONT]
    [FONT=Courier New]# DB 192.168.254.2 192.168.50.50 192.168.50.1[/FONT]
    [FONT=Courier New]# Linksys 192.168.50.1 123.x.x.x 123.x.x.y[/FONT]
    [FONT=Courier New]#[/FONT]
    [FONT=Courier New]# 192.168.254.0/24 PLC1 Subnet[/FONT]
    [FONT=Courier New]# 10.10.10.0/24 PLC2 Subnet (< -- change:1 here)[/FONT] [FONT=Courier New]# 192.168.50.0/24 LAN Subnet[/FONT] [FONT=Courier New]# 123.x.x.0/24 ISP Subnet[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# The PCS computer has one network card. It is on a subnet with various PLC[/FONT] [FONT=Courier New]# devices. All IPs on this subnet are statically assigned.[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# The DB computer has two network cards. One on the PLC1 subnet, the other[/FONT] [FONT=Courier New]# on the office LAN subnet. It has the IPEnableRouter=1 regedit applied.[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# The Linksys router is connected to the LAN subnet. Its WAN port is[/FONT] [FONT=Courier New]# connected to the DSL modem supplied by the ISP. It assigns IPs to the LAN[/FONT] [FONT=Courier New]# subnet via DHCP.[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# The Question:[/FONT] [FONT=Courier New]# """""""""""""[/FONT] [FONT=Courier New]# What additional settings are required to allow computers and devices on[/FONT] [FONT=Courier New]# the PLC1 subnet access to the internet? (<-- change:2 here)[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# Computers and devices on the PLC1 subnet must be able to send email[/FONT] [FONT=Courier New]# alerts. (<-- change:3 here)[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# The answer likely lies in a few simple route table entries. I think the[/FONT] [FONT=Courier New]# proverbial forest is hiding the trees. I can't seem to get it working.[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# On the PCS computer I tried:[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# route -p add 192.168.50.0 mask 255.255.255.0 192.168.254.2[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# Which allows ping 192.168.50.50 to work, but the rest of the subnet is[/FONT] [FONT=Courier New]# inaccessible. Suggestions would be appreciated.[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# I'm guessing there are entries also required on the DB computer.[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# Thanks in advance to the community for any help offered.[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# Dave[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# PCS Computer Route Table:[/FONT] [FONT=Courier New]# """""""""""""""""""""""""[/FONT] [FONT=Courier New]# ===========================================================================[/FONT] [FONT=Courier New]# 0x1 ........................... MS TCP Loopback interface[/FONT] [FONT=Courier New]# 0x2 ...00 21 9b 87 ed a6 ...... Intel(R) Gigabit[/FONT] [FONT=Courier New]# ===========================================================================[/FONT] [FONT=Courier New]# Network Destination Netmask Gateway Interface Metric[/FONT] [FONT=Courier New]# 0.0.0.0 0.0.0.0 192.168.254.2 192.168.254.1 20[/FONT] [FONT=Courier New]# 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1[/FONT] [FONT=Courier New]# 192.168.50.0 255.255.255.0 192.168.254.2 192.168.254.1 1[/FONT] [FONT=Courier New]# 192.168.254.0 255.255.255.0 192.168.254.1 192.168.254.1 20[/FONT] [FONT=Courier New]# 192.168.254.1 255.255.255.255 127.0.0.1 127.0.0.1 20[/FONT] [FONT=Courier New]# 192.168.254.255 255.255.255.255 192.168.254.1 192.168.254.1 20[/FONT] [FONT=Courier New]# 224.0.0.0 240.0.0.0 192.168.254.1 192.168.254.1 20[/FONT] [FONT=Courier New]# 255.255.255.255 255.255.255.255 192.168.254.1 192.168.254.1 1[/FONT] [FONT=Courier New]# Default Gateway: 192.168.254.2[/FONT] [FONT=Courier New]# ===========================================================================[/FONT] [FONT=Courier New]# Persistent Routes:[/FONT] [FONT=Courier New]# Network Address Netmask Gateway Address Metric[/FONT] [FONT=Courier New]# 192.168.50.0 255.255.255.0 192.168.254.2 1[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# Windows IP Configuration Ethernet adapter PLC:[/FONT] [FONT=Courier New]# Primary Dns Suffix : Description . . : Intel(R) Gigabit[/FONT] [FONT=Courier New]# Node Type . . . . . : Unknown Dhcp Enabled. . : No[/FONT] [FONT=Courier New]# IP Routing Enabled. : No IP Address. . . : 192.168.254.1[/FONT] [FONT=Courier New]# WINS Proxy Enabled. : No Subnet Mask . . : 255.255.255.0[/FONT] [FONT=Courier New]# Default Gateway : 192.168.254.2[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# DB Computer Route Table:[/FONT] [FONT=Courier New]# """"""""""""""""""""""""[/FONT] [FONT=Courier New]# ===========================================================================[/FONT] [FONT=Courier New]# 0x1 ........................... MS TCP Loopback interface[/FONT] [FONT=Courier New]# 0x2 ...00 17 3f ce c0 5f ...... Realtek RTL8139[/FONT] [FONT=Courier New]# 0x3 ...00 21 9b 87 ed 84 ...... Intel(R) Gigabit[/FONT] [FONT=Courier New]# ===========================================================================[/FONT] [FONT=Courier New]# Network Destination Netmask Gateway Interface Metric[/FONT] [FONT=Courier New]# 0.0.0.0 0.0.0.0 192.168.50.1 192.168.50.50 20[/FONT] [FONT=Courier New]# 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1[/FONT] [FONT=Courier New]# 192.168.50.0 255.255.255.0 192.168.50.50 192.168.50.50 20[/FONT] [FONT=Courier New]# 192.168.50.50 255.255.255.255 127.0.0.1 127.0.0.1 20[/FONT] [FONT=Courier New]# 192.168.50.255 255.255.255.255 192.168.50.50 192.168.50.50 20[/FONT] [FONT=Courier New]# 192.168.254.0 255.255.255.0 192.168.254.2 192.168.254.2 20[/FONT] [FONT=Courier New]# 192.168.254.2 255.255.255.255 127.0.0.1 127.0.0.1 20[/FONT] [FONT=Courier New]# 192.168.254.255 255.255.255.255 192.168.254.2 192.168.254.2 20[/FONT] [FONT=Courier New]# 224.0.0.0 240.0.0.0 192.168.50.50 192.168.50.50 20[/FONT] [FONT=Courier New]# 224.0.0.0 240.0.0.0 192.168.254.2 192.168.254.2 20[/FONT] [FONT=Courier New]# 255.255.255.255 255.255.255.255 192.168.50.50 192.168.50.50 1[/FONT] [FONT=Courier New]# 255.255.255.255 255.255.255.255 192.168.254.2 192.168.254.2 1[/FONT] [FONT=Courier New]# Default Gateway: 192.168.50.1[/FONT] [FONT=Courier New]# ===========================================================================[/FONT] [FONT=Courier New]# Persistent Routes:[/FONT] [FONT=Courier New]# None[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# Windows IP Configuration[/FONT] [FONT=Courier New]# Primary Dns Suffix :[/FONT] [FONT=Courier New]# Node Type . . . . . : Unknown[/FONT] [FONT=Courier New]# IP Routing Enabled. : Yes[/FONT] [FONT=Courier New]# WINS Proxy Enabled. : No[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# Ethernet adapter LAN: Ethernet adapter PLC:[/FONT] [FONT=Courier New]# Description . . . . : Realtek RTL8139 Description . . : Intel(R) Gigabit[/FONT] [FONT=Courier New]# Dhcp Enabled. . . . : Yes Dhcp Enabled. . : No[/FONT] [FONT=Courier New]# Autoconfig Enabled : Yes IP Address. . . : 192.168.254.2[/FONT] [FONT=Courier New]# IP Address. . . . . : 192.168.50.50 Subnet Mask . . : 255.255.255.0[/FONT] [FONT=Courier New]# Subnet Mask . . . . : 255.255.255.0 Default Gateway :[/FONT] [FONT=Courier New]# Default Gateway . . : 192.168.50.1[/FONT] [FONT=Courier New]# DHCP Server . . . . : 192.168.50.1[/FONT] [FONT=Courier New]# DNS Servers . . . . : 142.x.x.x[/FONT] [FONT=Courier New]# 142.x.x.y[/FONT] [FONT=Courier New]#[/FONT] [FONT=Courier New]# Changes:[/FONT] [FONT=Courier New]# """"""""[/FONT] [FONT=Courier New]# correction 1: typo PCS2 s/b PLC2[/FONT] [FONT=Courier New]# clarification 2: better qualify sentence[/FONT] [FONT=Courier New]# clarification 3: better qualify sentence[/FONT]
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