ProCurve 8200zl Uživatelská příručka stáhnout pdf (Strana 118)

PIM-SM (Sparse Mode)

PIM-SM Operation and Router Types

Supporting a Static-RP as Primary . A static-RP can be configured to

operate as either a secondary or primary RP. With the primary option, a

dynamic (C-RP) backup is recommended. The precedence of a static-RP over

a dynamic RP is determined by the following static-RP configuration options:

• override enabled on the static-RP

• a group mask on the static-RP that equals or exceeds the group mask

on the C-RP for the same multicast group(s)

For override configuration information, refer to “Statically Configuring an RP

To Accept Multicast Traffic” on page 4-42.

Operating Rules for Static RPs.

■ Static-RPs can be configured on the same routers as C-RPs.

■ Where a C-RP and a static-RP are configured to support the same multicast

group(s), the C-RP takes precedence over the static-RP unless the static-

RP is configured to override the C-RP. (Refer to “Supporting a Static-RP

as Primary”, above.)

■ Any static-RP in a domain must be configured identically on all routers in

the domain. Otherwise, some DRs will not know of the static-RP and will

not forward the appropriate multicast traffic, and some routers will not

know where to send Joins for the groups supported by static-RP.

■ Up to four static-RP entries can be configured on a router. Each entry can

be for either a single multicast group or a range of contiguous groups.

■ Only one interface can be configured as the static RP for a given multicast

group or range of groups. For example, a properly configured PIM-SM

domain does not support configuring 10.10.10.1 and 10.20.10.1 to both

support a multicast group identified as 239.255.255.10.

■ Static-RPs are not included in the RP-set messages generated by the BSR,

and do not generate advertisements.

■ If a static-RP becomes unavailable, it is necessary to remove and/or

replace the configuration for this RP in all routers in the domain.

Configuration. Refer to “Statically Configuring an RP To Accept Multicast

Traffic” on page 4-42.

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ProCurve 8200zl Uživatelská příručka Strana 118