Information Technology Reference
In-Depth Information
Table 14-2 outlines the problems that might cause this symptom and describes solutions to those
problems.
Table14-2 XNS: XNS Broadcast Packets Not Forwarded by Router
Possible Problem
Solution
Missing or
misconfigured
xns
helper-address
command
Caution:
Because debugging output is assigned high priority in
the CPU process, it can render the system unusable. For this
reason, use
debug
commands only to troubleshoot specific
problems or during troubleshooting sessions with Cisco
technical support staff. Moreover, it is best to use
debug
commands during periods of lower network traffic and fewer
users. Debugging during these periods decreases the likelihood
that increased
debug
command processing overhead will affect
system use.
1.
Enable the
debug xns packet privileged exec
command and
check the output for XNS packets that have an unknown type
xx
specification.
2.
Use the
show running-config privileged exec
command to
view the router configuration. Check the configuration of the
client-side interface to see whether an
xns helper-address
interface configuration command entry is present.
3.
If the
xns helper-address
command is not present, add it to
the client-side interface.
Syntax:
xns helper-address
network
.
host
Syntax Description:
•
network
—Network on which the target XNS server resides.
This is a 32-bit decimal number.
•
host
—Host number of the target XNS server. This is a 48-bit
hexadecimal value represented as a dotted triplet of
four-digit hexadecimal numbers (xxxx.xxxx.xxxx). The host
must be directly connected to one of the router's directly
attached networks. The number FFFF.FFFF.FFFF indicates
all hosts on the specified network.
Example:
In the following example, the server at address 0000.0c00.23fe
receives all broadcasts on network 51:
xns helper-address 51.0000.0c00.23fe
4.
If the command is present, make sure the MAC address
specified in this command is a type of broadcast.
Following is an example of an all-nets broadcast:
interface ethernet 0
xns helper-address -1.ffff.ffff.ffff
