Information Technology Reference
In-Depth Information
Table 11-7 outlines the problems that might cause this symptom and describes solutions to those
problems.
Table11-7
DECnet: No DECnet Phase IV Connectivity over PhaseV Backbone
Possible Problem
Solution
Misconfigured
addresses
1.
Use the
show interfaces
command to confirm that CLNS
and DECnet Phase IV are both configured on ISO CLNS
backbone routers.
2.
Make sure that the
decnet conversion
global configuration
command is configured on backbone routers to allow
DECnet Phase IV-to-ISO CLNS conversion.
3.
Use the
show running-config privileged exec
command on
backbone routers to verify that DECnet addresses agree with
CLNS addresses.
Two kinds of addresses are easily misconfigured: DECnet
addresses, which should be specified in decimal, and CLNS
Network Service Access Point addresses, which should be
specified in hexadecimal.
For more information, refer to the section “DECnet Phase IV and
ISO CLNS Addresses” later in this chapter.
4.
If the area addresses do not agree, confirm the address
specifications and reconfigure the DECnet and CLNS
addresses on the router.
For detailed information on configuring DECnet Phase IV,
CLNS, and conversion, refer to the
Cisco IOS Network Protocol
Configuration Guide, Part 2
.
ISO CLNS or
DECnet not
enabled on
appropriate
interfaces
1.
On Phase IV routers bordering the backbone, use the
show
clns interface
and
show decnet interface
commands to see
which interfaces are running which protocols.
Verify that DECnet and ISO CLNS are enabled on backbone
router interfaces where conversion will occur.
2.
If DECnet is not configured on the correct interfaces, enable
it. Make sure you specify the
decnet cost
interface
configuration command to assign a cost to the interface. If
ISO CLNS routing is not configured on the correct
interfaces, use the
clns router
interface configuration
command. The full syntax for this command is
clns
routing
Use the
no clns
routing
command to disable CLNS routing:
no clns
routing
For detailed information on configuring DECnet Phase IV and
ISO CLNS, refer to the Cisco IOS
Network Protocol
Configuration Guide, Part 2
.
