Cisco Headend System Release 2.7 Guia Da Instalação
Check the Time to Live Parameter
4036631 Rev B
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Editing the .profile File
You need to edit the .profile file only if the traceroute command (previous
procedure, Determining the Number of Hops) reveals that a packet of data requires
8 or more hops to reach a CMTS.
Follow these instructions to edit the .profile file.
1 In the space provided, write down the greatest number of hops revealed by the
procedure, Determining the Number of Hops) reveals that a packet of data requires
8 or more hops to reach a CMTS.
Follow these instructions to edit the .profile file.
1 In the space provided, write down the greatest number of hops revealed by the
traceroute command in the previous procedure. __________
2 Add 3 to your number from step 1 and write the result in the space provided.
__________
Example: If your number in step 1 is 8, adding 3 to 8 yields 11.
3 Use a text editor to open the /export/home/dncs/.profile file.
4 Append the following lines to the .profile file:
4 Append the following lines to the .profile file:
#Time To Live seconds/hops (default=10)
export COMM_MULTICAST_TTL=<Number from step 2>
#BFS Time To Live seconds/hops (default=10)
export BFS_MULTICAST_TTL=<Number from step 2>
#HCTM Time To Live seconds/hops (default=10)
export HCTM_MULTICAST_TTL=<Number from step 2>
Note: Substitute the number you recorded in step 2 for
< Number from step 2 >.
5 Save the .profile file and close the text editor.
Note: Your changes will take effect after you stop and restart the DNCS, later
during this upgrade procedure.
during this upgrade procedure.