Information Technology Reference
In-Depth Information
Table13-1 VINES: Clients Cannot Communicate with Servers over Router
Possible Problem
Solution
Missing
vines
serverless
or
vines arp-enabl
e
commands
A network that does not have an attached server must be
configured with the
vines serverless broadcast
and
vines arp-enable
router configuration commands.
Note:
These commands are enabled by default in Cisco IOS
Release 10.3 and later.
1.
Use the
show running-config
privileged exec command on
routers attached to networks with no VINES servers
attached. Look for
vines serverless
and
vines arp-enable
router configuration commands entries.
2.
If both the
vines serverless
and the
vines arp-enable
commands are not present, specify the commands for router
interfaces in serverless networks.
Missing
vines
serverless
or
vines arp-enabl
e
commands
(continued)
Syntax:
The following syntax is required to enable
vines serverless
:
vines serverless
[
dynamic
|
broadcast
]
Syntax Description:
•
dynamic
(Optional)—Forward broadcasts toward one server
only if there are no servers present on this interface.
•
broadcast
(Optional)—Always flood broadcasts out all other
router interfaces to reach all servers.
Syntax:
The following syntax is required to enable
vines arp-enable
:
vines arp-enable
[
dynamic
]
Syntax Description:
•
dynamic
(Optional)—Responds to ARP
2
and SARP
3
requests on this interface only if there are no other VINES
servers present.
Misconfigured
access list
1.
Use the
show vines access-list
privileged exec command on
routers in the path from source to destination. This command
shows whether there are access lists configured on the router.
2.
Disable all access lists configured on the router using
no
vines access-group
commands.
3.
Test the connection from the client to the server to see
whether connections are now possible. If the connection is
successful, an access list is blocking traffic.
4.
To isolate the problem access list, apply one access list
statement at a time until you can no longer create
connections.
continues
