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Juniper SSG5 firewall track IP

Posted on 2011-03-24
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Last Modified: 2012-05-11
I am going to setup Monitor Track IP for the firewall.
Could someone explain what are the below fields for?

Interval (Sec.)
Threshold
Time Out
Weight       

Thank you.
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Question by:dickchan
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by:gcl_hk
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IP tracking allows you to track the connectivity of critical IP`s.This allows you to change your routing based on the connectivity of configured IP`s.

There are 3 main points to Track IP :  

If a Tracked IP becomes unreachable, the weight of the address is added to the overall failed address total.
If the total failed address weight exceeds the IP Track threshold, IP Track is considered to have failed.
Once failed the interface will be placed as `Down` and removed from the routing table. This allows for changes in the routing based on failed connections/addresses.
Terms

Weight:    The weight for the specified IP address – used to compare against Track IP threshold.
Interval:    How often Ping`s or ARP`s are sent.
Threshold: How many Ping or ARP failures before the address is considered unreachable.
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