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traimen
Beginner
Beginner

netword diagram:

3750x(stack)

3750x(stack)

192.168.17.1/24

     |  |

     |  |  (LACP channel)

     |  |

192.168.17.254/24

Fortigate 200B

192.168.11.1/24

       |

       |

       |

   PC(192.168.11.100/24)

192.168.17.1/24        ping     192.168.11.1/24         success

192.168.11.100/24     ping     192.168.17.254/24     success

192.168.11.100/24 ping  192.168.17.1/24  False

why????

anyone can help me??

post the debug ip pack result in 3750X

==========================================

Jul  9 17:34:17.114: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, input feature, MCI Check(73), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:17.114: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, rcvd 2

Jul  9 17:34:17.114: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, stop process pak for forus packet

Jul  9 17:34:17.114: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, RCLI(7), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:17.114: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, Local Clustering(8), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:17.114: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, Wireless Controller(10), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:17.114: IP: tableid=0, s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), routed via RIB

Jul  9 17:34:17.122: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, sending

Jul  9 17:34:17.122: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, output feature, Input interface drop(69), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:17.122: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, output feature, Check hwidb(81), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:17.122: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, encapsulation failed

Jul  9 17:34:22.080: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, input feature, MCI Check(73), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:22.080: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, rcvd 2

Jul  9 17:34:22.080: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, stop process pak for forus packet

Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, RCLI(7), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, Local Clustering(8), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, Wireless Controller(10), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:22.088: IP: tableid=0, s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), routed via RIB

Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, sending

Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, output feature, Input interface drop(69), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, output feature, Check hwidb(81), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, encapsulation failedJul  9 17:34:17.114: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, input feature, MCI Check(73), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:17.114: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, rcvd 2
Jul  9 17:34:17.114: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, stop process pak for forus packet
Jul  9 17:34:17.114: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, RCLI(7), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:17.114: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, Local Clustering(8), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:17.114: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, Wireless Controller(10), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:17.114: IP: tableid=0, s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), routed via RIB
Jul  9 17:34:17.122: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, sending
Jul  9 17:34:17.122: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, output feature, Input interface drop(69), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:17.122: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, output feature, Check hwidb(81), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:17.122: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, encapsulation failed
Jul  9 17:34:22.080: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, input feature, MCI Check(73), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:22.080: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, rcvd 2
Jul  9 17:34:22.080: IP: s=192.168.11.100 (Port-channel3), d=192.168.17.1, len 60, stop process pak for forus packet
Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, RCLI(7), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, Local Clustering(8), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100, len 60, local feature, Wireless Controller(10), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:22.088: IP: tableid=0, s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), routed via RIB
Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, sending
Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, output feature, Input interface drop(69), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, output feature, Check hwidb(81), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Jul  9 17:34:22.088: IP: s=192.168.17.1 (local), d=192.168.11.100 (Port-channel3), len 60, encapsulation failed

=======================================================================================

Comments
traimen
Beginner
Beginner

Correct

192.168.17.1/24      ping   192.168.17.254/24    success

192.168.11.100/24   ping   192.168.17.254/24    success

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