User`s guide

IP Address Management
Connecting to a local IP network
3-6 Preliminary January 30, 1998 Pipeline User’s Guide
Using Ping to verify the address
The Ping command sends an Internet Control Message Protocol (ICMP)
mandatory echo request datagram, which asks the remote station “Are you
there?” If the echo request reaches the remote station, the station sends back an
ICMP echo response datagram, which tells the sender, “Yes, I am alive.” This
exchange verifies that the transmission path is open between the Pipeline and
another station.
To verify that the Pipeline is up on the local network, invoke the terminal server
interface and enter this command:
ping <host-name>
For example:
ping 10.1.2.3
You can terminate the Ping exchange at any time by pressing Ctrl-C. (For more
information about verifying that a device is on the network, see Chapter 8,
“Pipeline System Administration.”)
Enabling proxy mode in the Pipeline
When a dial-in host has an IP address on the same network as the Pipeline, only
the Pipeline keeps track that packets addressed to the host must be routed across
the WAN. To other local routers and hosts, the address appears to be on the local
network. Therefore, they might broadcast Address Resolution Protocol (ARP)
requests on the local network expecting the apparently local host to respond with
its physical address. Because the host is not really local, it cannot receive the
requests. But if the Pipeline is in Proxy Mode, serving as a proxy for the remote
host, it responds with its own physical address.
To enable the Pipeline to respond to ARP requests for remote devices that have
local IP addresses:
1
Open the Ethernet > Mod Config > Ether Options menu.
2
Turn on Proxy Mode.
If the IP addresses are assigned dynamically, use this setting:
Proxy Mode=Active