
Configuring and Troubleshooting Bay Dial VPN Services
C-12 303509-A Rev 00
5.
Display the encapsulated packet statistics using the
netstat - s
command.
The packet statistics can tell you about the integrity and congestion of your
network connection. The
netstat -s
command, which you enter at the Remote
Access Concentrator console, displays the following statistical information on
the GRE protocol packets:
• Total packets received
• Total packets sent
• Count of packets with bad checksums
• Total packets dropped on transmit
• Total packets dropped on receive
Refer to the description of the
netstat
command in Managing Remote Access
Concentrators Using Command Line Interfaces.
6.
Use the
ping
command to isolate connectivity problems.
The
ping
command is available from the Site Manager Administration menu.
When you enter the
ping
command, the BayRS software, not the Site
Manager, issues an Internet Control Message Protocol (ICMP) echo request.
Options include packet size, number of repetitions, and the capability to trace
the path of the ICMP echo request.
When you lose connectivity, use the
ping
command to isolate the problem
interface. Try pinging the end node that has connectivity problems. If you fail
to get a response, ping the local router interface, and then ping each interface
along the way to the problem node.
If after attempting to ping a device the response is “Unknown Network” or
“Network Unreachable,” check the local node's routing table and its default
gateway definition.
If the
ping
command yields the response “Target does not respond,” the
station you issued the ping from believes it knows how to get to the end node,
but never received a reply to its echo request. In this case, start pinging each
node in the path between the source and destination until you find the problem
interface.
Refer to the BayRS guide Troubleshooting Routers for detailed instructions
on issuing a
ping
command.
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