SWAN Concentrator and WAN Subsystem Troubleshooting Guide

Verifying the SWAN Hardware
SWAN Concentrator and WAN Subsystem Troubleshooting Guide—426992-008
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Common Cabling Problems
Common Cabling Problems
When the Ethernet cables are reversed or are connected to the same Ethernet
segment, Event Message 1509 is generated:
WANBoot: BOOTP received on wrong PATH for TRACKID
configuration-track-id, CLIP clip-number,
IP Address ip-address, PATH path-name
•
Reversed Cables
The SWAN concentrator has two distinct paths labeled path A and path B. Path A
corresponds to the preferred TCP/IP process, SUBNET, and logical interface (LIF)
and path B corresponds to the alternate TCP/IP process, SUBNET, and LIF. The
cable connected to path A must be connected to the E4SA, FESA, GESA, or
G4SA port associated with the preferred TCP/IP process, SUBNET, and LIF; the
cable connected to path B must be connected to the E4SA, FESA, GESA, or
G4SA port associated with the alternate TCP/IP process, SUBNET, and LIF. The
cables cannot be reversed. For more information, see Verifying SWAN
Concentrator Cabling and Correcting SWAN Concentrator Cabling.
•
Cables Connected to the Same Ethernet Segment
The Internet Protocol (IP) addresses associated with the preferred and alternate
TCP/IP processes configured for the SWAN concentrator must be on different
subnets. Therefore, the cables connected to path A and path B must be connected
to different Ethernet segments. (Each physical segment of a local area network
(LAN) is defined as a different subnet.) For more information, see Verifying SWAN
Concentrator Cabling and Correcting SWAN Concentrator Cabling.
Verifying SWAN Concentrator Cabling
1. Make sure that the Ethernet cables connected to path A and path B on the SWAN
concentrator are connected to the correct ports on the correct Ethernet adapters.
a. Determine the preferred and alternate TCP/IP processes and the IP addresses
that support the SWAN concentrator by using the SCF INFO ADAPTER
command:
INFO ADAPTER $ZZWAN.#adapter-name
Determining the TCP/IP Processes and IP Addresses for a SWAN
Concentrator on page A-7 shows the output of this command and explains how
to interpret it.
b. Determine the LIFs associated with the TCP/IP processes and IP addresses
that support the SWAN concentrator by using the SCF INFO SUBNET
command for each TCP/IP process you found using the SCF INFO ADAPTER
command:
INFO SUBNET $pref-tcpip-process.*
INFO SUBNET $alt-tcpip-process.*