3com S7906E 安装指导

 

 

1-12 

 

Enable active/standby mode for 
service ports on SRPUs 

strict-standby enable 

Optional 

Disabled by default. 

 

z 

Before enabling the active/standby mode for service ports on SRPUs, you need to perform 

cross-card port redundancy configurations, such as cross-card port aggregation, cross-card STP, 

cross-card dynamic routing. 

z 

This feature is applicable to SRPUs LSQ1SRP2XB and LSQ1SRP12GB only. 

 

Configuring the Traffic Forwarding Mode of SRPUs 

The S7900E series Ethernet switches support multiple types of SRPUs, which support different traffic 

forwarding modes. You can configure the SRPU traffic forwarding mode as needed. 

Table 1-1 Traffic forwarding modes supported by S7900E SRPUs 

Enhanced 
Layer 2 
forwarding 
mode 

Supporting selective QinQ 

Double-tagged VLAN 
networks 

LSQ1SRP2XB 

LSQ1SRPB 

LSQ1MPUA 

LSQ1CGP24TS
C 

LSQ1CGV24PS
C 

LSQ1SRPD 

LSQ1SRP12GB 

Standard 
forwarding 
mode 

z 

Supporting QinQ 

z 

Powerful Layer 3 forwarding 
functions 

Common networks 

Enhanced 
Layer 2 
forwarding 
mode with the 
MAC extension 
function 

z 

Supporting selective QinQ 

z 

Providing a 128K MAC address 
table and a 4K routing table 

Double-VLAN-tag 
networks with a large 
quantity of MAC 
addresses  

LSQ1SRP1CB 

Standard 
forwarding 
mode with the 
MAC extension 
function 

z 

Supporting QinQ 

z 

Powerful Layer 3 forwarding 
functions 

z 

Providing a 128K MAC address 
table and a 4K routing table 

Networks having a 
large quantity of 
MAC addresses and 
low requirements on 
routing table size