Checking The Configuration; Configuring Layer 2 Flow Import; Establishing The Configuration Task - Huawei quidway s7700 Configuration Manual

Quidway S7700 Smart Routing Switch
Configuration Guide - SPU

1.2.3 Checking the Configuration

You can check the current service type before and after configuring the service type of the SPU.
Procedure
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1.3 Configuring Layer 2 Flow Import

The S7700 and SPU are deployed in VLAN networking. After the interfaces that need to
communicate with each other are grouped into the same VLAN, interworking at Layer 2 can be
implemented.

1.3.1 Establishing the Configuration Task

This topic describes the pre-configuration task and data preparations for configuring Layer 2
flow import.
Applicable Environment
When firewalls, load balancing, and IPSec are used, the LPU of the S7700 forwards traffic to
the SPU for processing.
When traffic is forwarded at Layer 2:
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When using firewalls, and load balancing, you are advised to aggregate two groups of virtual
XGE service interfaces on the S7700 and SPU as Eth-Trunk interfaces.
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Run the display service-type command in the system view, and you can check the service
type of the SPU.
For the firewall, and load balance services
– The SPU aggregates two groups of virtual XGE service interfaces as an Eth-Trunk
interface, thus providing higher bandwidth.
– The SPU can also add interfaces on the LPUs and virtual XGE interfaces on the
S7700 to the same VLAN and configure the virtual XGE sub-interfaces on the SPU to
allow the packets from the certain VLANs to pass.
For the IPSec service, the SPU does not aggregate interfaces, but directly adds interfaces
on the LPUs and virtual XGE interfaces on the S7700 to the same VLAN and configure
the virtual XGE sub-interfaces on the SPU to allow the packets from the certain VLANs
to pass.
Importing Layer 2 flows if interfaces are aggregated
As shown in Figure 1-2, GE 3/0/0 on the LPU forwards traffic to the SPU for processing.
After processing the traffic, the SPU forwards it to GE 3/0/1. Then GE 3/0/1 forwards the
traffic to the LPU. If two groups of XGE interfaces on the S7700 and SPU are aggregated
as Eth-Trunk interfaces, you need to add GE 3/0/0, Eth-Trunk 0, and Eth-Trunk 1 to the
same VLAN.
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1 SPU Pre-Configuration
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