Raisecom
ISCOM2600G-HI (A) Series Configuration Guide
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
Figure 11-4 Networking with interface backup in different VLANs
In different VLANs, the forwarding status is shown as below:
Under normal conditions, configure Switch A in VLANs 100–150.
In VLANs 100–150, GE 1/1/1 is the primary interface and GE 1/1/2 is the backup
interface.
In VLANs 151–200, GE 1/1/2 is the primary interface and GE 1/1/1 is the backup
interface.
GE 1/1/1 forwards traffic of VLANs 100–150, and GE 1/1/2 forwards traffic of VLANs
151–200.
When GE 1/1/1 fails, GE 1/1/2 forwards traffic of VLANs 100–200.
When GE 1/1/1 restores normally and keeps Forward for a period (restore-delay), GE
1/1/1 forwards traffic of VLANs 100–150, and GE 1/1/2 forwards VLANs 151–200.
Interface backup is used to balance service load in different VLANs without depending on
configurations of uplink switches, thus facilitating users' operation.
11.2.2 Preparing for configurations
Scenario
By configuring interface backup in a dual uplink network, you can realize redundancy backup
and fast switching of the primary/backup link, and load balancing between different interfaces.
Compared with STP, interface backup not only ensures millisecond-level switching, also
simplifies configurations.
Prerequisite
N/A
11.2.3 Default configurations of interface backup
Default configurations of interface backup are as below.
11.2.4 Configuring basic functions of interface backup
Configure basic functions of interface backup for the ISCOM2600G-HI series switch as
below.
Interface backup may interfere with STP, loop detection, Ethernet ring, and G.8032.
We do not recommend configuring them concurrently on the same interface.
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