I have Fortigate 60D with FortiOS 6.06 First ISP - static IP
Second ISP - PPPoE
When I add both of them to SD-WAN and make a static route 0.0.0.0/0.0.0.0 to SD-WAN interface in routing table appear two line:
Routing table for VRF=0
S* 0.0.0.0/0 [1/0] via 193.200.32.2, ppp1
[1/0] via 31.128.69.193, wan2
But after few seconds (5-6) line with ppp1 interface disappearing
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I had that same problem and had to update my FortiOS. Have you done this? BUt the ppp interface should be in the route table. Also , do you have any SDWAN link checkers enabled? Very bad outcomes can happen with ping/http status checks on SDWAN interfaces. Do keep us updated and what fortiOS version you are running.
PCNSE
NSE
StrongSwan
Had a similar issue with a DSL (pppoe) connection that was part of a zone (load-balancing) connection - this was running on 5.4 and the interface kept dropping until I have enabled dynamic-gateway (via static route) for the interface.
NSE4/FMG-VM64/FortiAnalyzer-VM/6.0 (FWF30E/FW92D/FGT200D/FGT101E/FGT81E)/ FAP220B/221C
emnoc wrote:I have Fortigate 60D with FortiOS 6.0.7I had that same problem and had to update my FortiOS. Have you done this? BUt the ppp interface should be in the route table. Also , do you have any SDWAN link checkers enabled? Very bad outcomes can happen with ping/http status checks on SDWAN interfaces. Do keep us updated and what fortiOS version you are running.
Debug from PPPoE
=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2019.11.29 09:42:51 =~=~=~=~=~=~=~=~=~=~=~=
2019-11-29 09:43:32 update_interfaces()-499: New PPPoE interface wan1
2019-11-29 09:43:32 update_interfaces()-584: PPPoE parameters of wan1 changed.
2019-11-29 09:43:32 pppoed_main()-812: Start PPPoE interface wan1
2019-11-29 09:43:32 pppoed_main()-815: PID of wan1 is 365
2019-11-29 09:43:32 parameters passed to pppd:
2019-11-29 09:43:32 pppd 2019-11-29 09:43:32 0 2019-11-29 09:43:32 pppoed 2019-11-29 09:43:32 wan1 2019-11-29 09:43:32 2019-11-29 09:43:32 2019-11-29 09:43:32 2019-11-29 09:43:32 2019-11-29 09:43:32 2019-11-29 09:43:32 nopersist 2019-11-29 09:43:32 noipdefault 2019-11-29 09:43:32 noauth 2019-11-29 09:43:32 defaultroute 2019-11-29 09:43:32 default-asyncmap 2019-11-29 09:43:32 hide-password 2019-11-29 09:43:32 nodetach 2019-11-29 09:43:32 mtu 2019-11-29 09:43:32 1492 2019-11-29 09:43:32 mru 2019-11-29 09:43:32 1492 2019-11-29 09:43:32 noaccomp 2019-11-29 09:43:32 noccp 2019-11-29 09:43:32 nobsdcomp 2019-11-29 09:43:32 nodeflate 2019-11-29 09:43:32 nopcomp 2019-11-29 09:43:32 novj 2019-11-29 09:43:32 novjccomp 2019-11-29 09:43:32 user 2019-11-29 09:43:32 t01205 2019-11-29 09:43:32 lcp-echo-interval 2019-11-29 09:43:32 5 2019-11-29 09:43:32 lcp-echo-failure 2019-11-29 09:43:32 3 2019-11-29 09:43:32 sync 2019-11-29 09:43:32 plugin 2019-11-29 09:43:32 /bin/pppoe.so 2019-11-29 09:43:32 2019-11-29 09:43:32 2019-11-29 09:43:32 2019-11-29 09:43:32 2019-11-29 09:43:32 pppoe_retry_time 2019-11-29 09:43:32 1 2019-11-29 09:43:32 pppoe_padt_time 2019-11-29 09:43:32 1 2019-11-29 09:43:32 pppoe_srv_name 2019-11-29 09:43:32 2019-11-29 09:43:32 pppoe_ac_name 2019-11-29 09:43:32 2019-11-29 09:43:32 pppoe_hostuniq 2019-11-29 09:43:32 4a25300 2019-11-29 09:43:32 pppoe_sock2parent 2019-11-29 09:43:32 12 2019-11-29 09:43:32 wan1 2019-11-29 09:43:32 ipunnumbered 2019-11-29 09:43:32 0.0.0.0 2019-11-29 09:43:32 idle 2019-11-29 09:43:32 0 2019-11-29 09:43:32 unnumbered-negotiate 2019-11-29 09:43:32 enable 2019-11-29 09:43:32 2019-11-29 09:43:32 2019-11-29 09:43:32 2019-11-29 09:43:32
2019-11-29 09:43:33 using channel 5
2019-11-29 09:43:33 Using interface ppp1
2019-11-29 09:43:33 Connect: ppp1 <--> wan1
2019-11-29 09:43:33 Parent: pppoed
2019-11-29 09:43:33 PPP send: LCP Configure_Request id(1) len(14) [Maximum_Received_Unit 1492] [Magic_Number 554216F6]
2019-11-29 09:43:33 PPP recv: LCP Configure_Ack id(1) len(14) [Maximum_Received_Unit 1492] [Magic_Number 554216F6]
2019-11-29 09:43:35 PPP recv: LCP Configure_Request id(2) len(19) [Maximum_Received_Unit 1492] [Magic_Number 67BB0C30] [Authentication_Protocol CHAP algorithm=MSCHAPv2]
2019-11-29 09:43:35 PPP send: LCP Configure_Ack id(2) len(19) [Maximum_Received_Unit 1492] [Magic_Number 67BB0C30] [Authentication_Protocol CHAP algorithm=MSCHAPv2]
2019-11-29 09:43:35 PPP send: LCP Echo_Request id(0) len(8) [Magic_Number 554216f6]
2019-11-29 09:43:35 PPP recv: CHAP Challenge id(1)
2019-11-29 09:43:35 PPP send: CHAP Response id(1)
2019-11-29 09:43:35 PPP recv: LCP Echo_Reply id(0) len(8) [Magic_Number 67bb0c30]
2019-11-29 09:43:35 PPP recv: CHAP Success id(1) msg(S=24F43E47D3D90AC528178CDC551B6FCE3876D125)
2019-11-29 09:43:35 Remote message: S=24F43E47D3D90AC528178CDC551B6FCE3876D125
2019-11-29 09:43:35 PPP send: IPCP Configure_Request id(1) [IP_Address 0.0.0.0] [Primary_DNS_IP_Address 0.0.0.0] [Secondary_DNS_IP_Address 0.0.0.0]
2019-11-29 09:43:35 PPP recv: IPCP Configure_Request id(1) [IP_Address 193.200.32.2] [IP_Compression_Protocol Van Jacobson]
2019-11-29 09:43:35 PPP send: IPCP Configure_Reject id(1) [IP_Compression_Protocol Van Jacobson]
2019-11-29 09:43:35 PPP recv: IPCP Configure_Nak id(1) [IP_Address YYY.YYY.YYY.YYY] [Primary_DNS_IP_Address 8.8.8.8] [Secondary_DNS_IP_Address 193.200.32.5]
2019-11-29 09:43:35 PPP send: IPCP Configure_Request id(2) [IP_Address YYY.YYY.YYY.YYY] [Primary_DNS_IP_Address 8.8.8.8] [Secondary_DNS_IP_Address 193.200.32.5]
2019-11-29 09:43:35 PPP recv: IPCP Configure_Request id(2) [IP_Address 193.200.32.2]
2019-11-29 09:43:35 PPP send: IPCP Configure_Ack id(2) [IP_Address 193.200.32.2]
2019-11-29 09:43:35 PPP recv: IPCP Configure_Ack id(2) [IP_Address YYY.YYY.YYY.YYY] [Primary_DNS_IP_Address 8.8.8.8] [Secondary_DNS_IP_Address 193.200.32.5]
2019-11-29 09:43:35 pppoe_read_intf_link_sock()-424: interface=ppp1 event=3
2019-11-29 09:43:35 update_interfaces()-443: Update PPPoE interfaces
2019-11-29 09:43:35 update_interfaces()-447: Invalidate PPPoE interface wan1
2019-11-29 09:43:35 update_interfaces()-501: Found PPPoE interface wan1
2019-11-29 09:43:35 update_interfaces()-584: PPPoE parameters of wan1 unchanged.
2019-11-29 09:43:35 send_vip_arp: vd root master 1 intf wan2 ip XXX.XXX.XXX.XXX
2019-11-29 09:43:35 send_vip_arp: vd root master 1 intf wan1 ip YYY.YYY.YYY.YYY
2019-11-29 09:43:35 local IP address YYY.YYY.YYY.YYY
2019-11-29 09:43:35 remote IP address 193.200.32.2
2019-11-29 09:43:35 primary DNS address 8.8.8.8
2019-11-29 09:43:35 secondary DNS address 193.200.32.5
2019-11-29 09:43:40 PPP send: LCP Echo_Request id(1) len(8) [Magic_Number 554216f6]
2019-11-29 09:43:40 PPP recv: LCP Echo_Reply id(1) len(8) [Magic_Number 67bb0c30]
2019-11-29 09:43:45 PPP send: LCP Echo_Request id(2) len(8) [Magic_Number 554216f6]
2019-11-29 09:43:45 PPP recv: LCP Echo_Reply id(2) len(8) [Magic_Number 67bb0c30]
Routing table log
=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2019.11.29 09:43:00 =~=~=~=~=~=~=~=~=~=~=~=
p1fg # get router info routing-table static
Routing table for VRF=0
S* 0.0.0.0/0 [1/0] via 31.128.69.193, wan2
p1fg # get router info routing-table static
Routing table for VRF=0
S* 0.0.0.0/0 [1/0] via 193.200.32.2, wan1
[1/0] via 31.128.69.193, wan2
p1fg # get router info routing-table static
Routing table for VRF=0
S* 0.0.0.0/0 [1/0] via 193.200.32.2, wan1
[1/0] via 31.128.69.193, wan2
p1fg # get router info routing-table static
Routing table for VRF=0
S* 0.0.0.0/0 [1/0] via 193.200.32.2, wan1
[1/0] via 31.128.69.193, wan2
p1fg # get router info routing-table static
Routing table for VRF=0
S* 0.0.0.0/0 [1/0] via 193.200.32.2, wan1
[1/0] via 31.128.69.193, wan2
p1fg # get router info routing-table static
Routing table for VRF=0
S* 0.0.0.0/0 [1/0] via 193.200.32.2, ppp1
[1/0] via 31.128.69.193, wan2
p1fg # get router info routing-table static
Routing table for VRF=0
S* 0.0.0.0/0 [1/0] via 31.128.69.193, wan2
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