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Why Can't I Ping the Gateway IP?

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Article ID: KB4402 KB Last Updated: 04 Jun 2010Version: 4.0
Summary:
Why Can't I Ping the Gateway IP?
Symptoms:

Solution:
Note: If you cannot ping the gateway IP that is defined in the route to the remote firewall, you will need to check the status of the public interface and the route. When verifying connectivity, you will check the Untrust/eth3 interface as well as the routes by using the get interface and get route commands.

To verify the public interface status, perform the following steps:

Step oneOpen the Command Line Interface (CLI). For more information on how to open the CLI, go to Accessing the Command Line Interface Using Telnet.

Step twoEnter    get interface   press ENTER.

Note: In this example, eth3 is the Untrust/public interface and the VLAN State VSD is D, which indicates that the interface is down.


A - Active, I - Inactive, U - Up, D - Down, R - Ready
-------------------------------------------------------------------------------------------------------------
Interfaces in vsys Root:
Name IP Address Zone MAC VLAN State VSD
eth1 192.168.1.1/24 Trust 0010.db19.a7d0 - U -
eth2 0.0.0.0/0 DMZ 0010.db19.a7d5 - D -
eth3 210.1.1.1/24 Untrust 0010.db19.a7d6 - D -
eth4 0.0.0.0/0 Null 0010.db19.a7d7 - D -
eth5 0.0.0.0/0 Null 0010.db19.a7d8 - D -
eth6 0.0.0.0/0 Null 0010.db19.a7d9 - D -
eth7 0.0.0.0/0 Null 0010.db19.a7da - D -
eth8 0.0.0.0/0 HA 0010.db19.a7db - U -
vlan1 0.0.0.0/0 VLAN 0010.db19.a7df I D -

Note: In this example, eth3 is the Untrust/public interface and the VLAN State VSD is U, which indicates that the interface is up.


A - Active, I - Inactive, U - Up, D - Down, R - Ready
-------------------------------------------------------------------------------------------------------------
Interfaces in vsys Root:
Name IP Address Zone MAC VLAN State VSD
eth1 192.168.1.1/24 Trust 0010.db19.a7d0 - U -
eth2 0.0.0.0/0 DMZ 0010.db19.a7d5 - D -
eth3 210.1.1.1/24 Untrust 0010.db19.a7d6 - U -
eth4 0.0.0.0/0 Null 0010.db19.a7d7 - D -
eth5 0.0.0.0/0 Null 0010.db19.a7d8 - D -
eth6 0.0.0.0/0 Null 0010.db19.a7d9 - D -
eth7 0.0.0.0/0 Null 0010.db19.a7da - D -
eth8 0.0.0.0/0 HA 0010.db19.a7db - U -
vlan1 0.0.0.0/0 VLAN 0010.db19.a7df I D -

 

To verify the route status, perform the following steps:

Step oneOpen the Command Line Interface (CLI). For more information on how to open the CLI, go to Accessing the Command Line Interface Using Telnet.

Step twoEnter   get route   press ENTER.

Note: In this example, routes ID 6 and ID 3 use interface eth3 and do not have an asterisk before the ID number. This indicates that these routes are inactive. If this is the case for your routes, ensure that all cables are properly connected.


C - Connected, S - Static, A - Auto-Exported, I - Imported, R - RIP, iB - IBGP, eB - EBGP, O - OSPF, E1 - OSPF external type 1, E2 - OSPF external type 2, trust-vr (3 entries)
-------------------------------------------------------------------------------------------------------------
ID IP-Prefix Interface Gateway P Pref Mtr Vsys
6 0.0.0.0/0 eth3 210.1.1.2 S 20 1 Root
*2 192.168.1.0/24 eth1 0.0.0.0 C 0 0 Root
3 210.1.1.0/24 eth3 0.0.0.0 C 0 0 Root

Note: In this example, the routes associated with eth3 are now active because there is an asterisk before each ID number.


C - Connected, S - Static, A - Auto-Exported, I - Imported, R - RIP, iB - IBGP, eB - EBGP, O - OSPF, E1 - OSPF external type 1, E2 - OSPF external type 2, trust-vr (3 entries)
-------------------------------------------------------------------------------------------------------------
ID IP-Prefix Interface Gateway P Pref Mtr Vsys
*6 0.0.0.0/0 eth3 210.1.1.2 S 20 1 Root
*2 192.168.1.0/24 eth1 0.0.0.0 C 0 0 Root
*3 210.1.1.0/24 eth3 0.0.0.0 C 0 0 Root


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