Can packets exchanged between external networks and intranet servers through two outbound interfaces of an AR be transmitted over different paths

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Packets exchanged between external networks and intranet servers through two outbound interfaces of an AR may be transmitted over different paths. To avoid this problem, configurations need to be added. For example, configure redirection to ensure that packets are sent and received through the same interface. That is, response packets received from an internal server are transmitted along the same path as the request packets sent from the public network.
For detailed configurations, see "Internet Access > NAT > Example for Configuring NAT and Redirection to Implement Two Egresses and Provide the Web Service" in the Typical Configuration Examples.

Other related questions:
Does an AR send and receive packets through different paths
An AR cannot send and receive packets through different paths, because packets sent from the AR can be controlled while packets received from carriers cannot be controlled.

How to configure dual uplink interfaces on an AR functioning as the NAT server
A Huawei AR router functioning as a NAT server supports dual outbound interfaces. For the network diagram, see the right side of the page. The web server uses internal IP address 192.168.0.100/24 and port 8080 to provide services. The IP address of GE2/0/0 (outbound interface) on the AR is 202.10.1.2/24, and the IP address of GE3/0/0 is 201.10.1.2/24. The configuration process is as follows: 1. Configure IP addresses of interfaces on the router. [Huawei] interface Ethernet0/0/0 [Huawei-Ethernet0/0/0] ip address 192.168.0.1 24 [Huawei-Ethernet0/0/0] quit [Huawei] interface GigabitEthernet2/0/0 [Huawei-GigabitEthernet2/0/0] ip address 202.10.1.2 24 [Huawei-GigabitEthernet2/0/0] quit [Huawei] interface GigabitEthernet3/0/0 [Huawei-GigabitEthernet3/0/0] ip address 201.10.1.2 24 [Huawei-GigabitEthernet3/0/0] quit 2. Configure outbound NAT on GE2/0/0 and GE3/0/0 in NAT server and Easy IP mode. [Huawei] acl number 2000 [Huawei-acl-basic-2000] rule 5 permit source 192.168.0.0 0.0.0.255 [Huawei-acl-basic-2000] quit [Huawei] interface GigabitEthernet2/0/0 [Huawei-GigabitEthernet2/0/0] nat server protocol tcp global 202.10.1.3 www inside 192.168.0.100 8080 [Huawei-GigabitEthernet2/0/0] quit [Huawei] interface GigabitEthernet3/0/0 [Huawei-GigabitEthernet3/0/0] nat server protocol tcp global 201.10.1.3 www inside 192.168.0.100 8080 [Huawei-GigabitEthernet3/0/0] nat outbound 2000 [Huawei-GigabitEthernet3/0/0] quit

How Can I Exchange the External Network Egress Type of ServiceCenter to Internet or Intranet
【Product�? ManageOne ServiceCenter 【Version�? 3.0.5 【Question�? How can I exchange the external network egress type of ServiceCenter to Internet or Intranet? 【Answer�? When exchanging the external network egress type, comply with the following principles: If the external network is used to create VMs and the egress type is Internet, change the external network egress type to Internet. If the external network egress type is changed from Intranet to Internet, the external network egress type cannot be changed back to Intranet. ----End

How to configure an Ethernet interface to access the external network
Service interfaces fall into two types: 1. LAN interface (Layer 2 interface): is used by an AR to exchange data with network devices on a LAN. 2. WAN interface (Layer 3 interface): is used by an AR to exchange data with external network devices. You can run the portswitch command to switch a Layer 2 interface to a Layer 3 interface, to implement data exchange with the external network.

Does an AR support multiple outbound interfaces
Multiple outbound interfaces of AR routers are configured as follows: 1. The AR150 series routers support dual WAN access. Some AR models provide two electrical interfaces as WAN interfaces, while other models provide only one electrical interface as the WAN interface. To implement dual WAN access, LAN interface FE0 must be used as a Layer 3 interface. - Types of WAN interfaces: AR151, AR151W-P, AR151G-HSPA+7, and AR151G-C: FE electrical interface AR156 and AR156W: ADSL-B/J interface AR157, AR157W, AR157VW, and AR157G-HSPA+7: ADSL-A/M interface AR158E and AR158EVW: G.SHDSL Interface - LAN interface FE0 can be used as a WAN interface. 2. The AR160 series routers support dual WAN access. - Types of WAN interfaces: AR162F: SA interface AR168F: G.SHDSL interface AR169F, AR169FVW, and AR169FGVW-L: VDSL2 interface The AR160 series has a GE combo interface functioning as a WAN interface. - LAN interface GE0 can be used as a WAN interface. 3. The AR200 series routers support dual WAN access. - Types of WAN interfaces: AR201 and AR201VW-P: FE electrical interface AR206: ADSL-B/J interface AR207, AR207V, AR207VW, AR207V-P, and AR207G-HSPA+7: ADSL-A/M interface AR208E: G.SHDSL interface - LAN interface FE0 can be used as a WAN interface. 4. The AR1200 series routers support dual WAN access even without an expansion card installed. 5. The AR2200 series routers support dual WAN access on fixed interfaces. 6. The AR3200 series routers support dual WAN interfaces.

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