Sierra Wireless AirLink RV50 Series User Manual page 101

Field
Foreign Agent
Re-registration Timer
(seconds)
Retry Time Interval
(seconds)
Maximum Retry Count
Registration Request
Lifetime (seconds)
Reverse Tunnelling Agent
Maximum Transmission
Unit - MTU (bytes)
Maximum Segment Size
- MSS (bytes)
Force Fragmentation
Rev 1 Dec. 17
3. Click the + beside Foreign Agent and Reverse Tunnelling Agent.
4. Configure the Foreign Agent and Reverse Tunnelling Agent.
The frequency with which the foreign agent re-registers its subnets
If the registration status is Down, the foreign agent re-registers its subnets when the
•
time configured in this field expires.
If the registration status is Up, the frequency with which the foreign agent re-
•
registers its subnets is equal to the Registration Response Lifetime minus the value
configured in this field.
The Registration Response Lifetime is usually equal to the
Lifetime (seconds). Once you have enabled DMNR, you can confirm the Regis-
tration Response Lifetime in ACEmanager.
Options are:
1–60 seconds (Default is 60.)
•
The interval (in seconds) between retries if the re-registration fails. Options are:
1–5 seconds (Default is 5.)
•
Maximum number of re-registration tries allowed. Options are:
0–5 (Default is 3.)
•
Enter the desired registration lease time (in seconds). Options are:
0–65534 seconds (Default is 65534.)
•
Use this field to set the tunnel MTU for packets sent over the DMNR/GRE tunnel. Note
that the tunnel adds 24 bytes to each packet so the tunnel MTU should be set at least 24
bytes lower than the Mobile Network MTU in order to avoid packet fragmentation.
Options are:
576–1500 (Default is 1476.)
•
Use this field to set the TCP maximum segment size for the packets (in bytes). Options
are:
68–1436 (Default is 1436.)
•
Allows you to override the "Do not fragment" bit in the incoming packet header and send
large packets through the DMNR tunnel
Options are:
Enable—The "Do not fragment" bit in the incoming packet header is cleared. This
•
setting is useful if you need to send large packets or you do not know the MTU of all
the routers in the network path.
Disable — The "Do not fragment" bit in the incoming packet header is respected. If
•
the bit is set, packets larger than the MTU are dropped. If the bit is clear, packets
larger than the MTU are fragmented and sent. (Default)
5. In the DMNR Enable field, select Enable.
Once DMNR is enabled, the fields are read-only. If you want to change any of
the field entries, set the DMNR Enable field to Disable, make the required
change, and then set the field to Enable.
101
WAN/Cellular Configuration
Description
Registration Request
41111088