3com 5500-ei pwr Instrução De Instalação

 

11 

To do... 

Use the command... 

Remarks 

Enter interface view 

interface interface-type 
interface-number 

— 

Enable PIM-SM 

Required 

Disabled by default  

 

An RP can be manually configured or dynamically elected through the BSR mechanism. For a large 

PIM network, static RP configuration is a tedious job. Generally, static RP configuration is just a backup 

means for the dynamic RP election mechanism to enhance the robustness and operation manageability 

of a multicast network. 

If there is only one dynamic RP in a network, manually configuring a static RP can avoid communication 

interruption due to single-point failures and avoid frequent message exchange between C-RPs and the 

BSR. To enable a static RP to work normally, you must perform this configuration on all the routers in the 

PIM-SM domain and specify the same RP address.  

Follow these steps to configure a static RP: 

Enter system view 

— 

Enter PIM view 

— 

Configure a static RP 

static-rp rp-address 
[ acl-number ] 

Optional 

No static RP by default 

 

In a PIM-SM domain, you can configure routers that intend to become the RP as C-RPs. The BSR 

collects the C-RP information by receiving the C-RP-Adv messages from C-RPs or auto-RP 

announcements from other routers and organizes the information into an RP-set, which is flooded 

throughout the entire network. Then, the other routers in the network calculate the mappings between 

specific group ranges and the corresponding RPs based on the RP-set. We recommend that you 

configure C-RPs on backbone routers. 

To guard against C-RP spoofing, you need to configure a legal C-RP address range and the range of 

multicast groups to be served on the BSR. In addition, because every C-BSR has a chance to become 

the BSR, you need to configure the same filtering policy on all C-BSRs in the PIM-SM domain.  

Follow these steps to configure a C-RP: 

Enter system view 

— 

Enter PIM view 

—