Defining An Ip Interface For Pim Use; Pim Neighbor Filters - Lenovo CN4093 Application Manual

Defining an IP Interface for PIM Use

PIM Neighbor Filters

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CN4093 Application Guide for N/OS 8.3
Each network attached to an IP interface on the switch may be assigned one of the
available PIM components. The same PIM component can be assigned to multiple
IP interfaces. The interfaces may belong to the same VLAN, but each interface can
belong to only one VLAN.
To define an IP interface for use with PIM, first configured the interface with an
IPv4 address and VLAN as follows:
CN 4093(config)# interface ip <Interface number>
CN 4093(config-ip-if)# ip address <IPv4 address> <IPv4 mask>
CN 4093(config-ip-if)# vlan <VLAN number>
CN 4093(config-ip-if)# enable
Note: The PIM feature currently supports only one VLAN for each IP interface.
Configurations where different interfaces on different VLANs share IP addresses
are not supported.
Next, PIM must be enabled on the interface, and the PIM network component ID
must be specified:
CN 4093(config-ip-if)# ip pim enable
CN 4093(config-ip-if)# ip pim component-id <1-2>
CN 4093(config-ip-if)# exit
By default, PIM component 1 is automatically assigned when PIM is enabled on
the IP interface.
Note: While PIM is enabled on the interface, the interface VLAN cannot be
changed. To change the VLAN, first disable PIM on the interface.
The CN4093 accepts connection to up to 24 PIM interfaces. By default, the switch
accepts all PIM neighbors attached to the PIM-enabled interfaces, up to the
maximum number (72 neighbors). Once the maximum is reached, the switch will
deny further PIM neighbors.
To ensure that only the appropriate PIM neighbors are accepted by the switch, the
administrator can use PIM neighbor filters to specify which PIM neighbors may be
accepted or denied on a per-interface basis.
To turn PIM neighbor filtering on or off for a particular IP interface, use the
following commands:
CN 4093(config)# interface ip <Interface number>
CN 4093(config-ip-if)# [no] ip pim neighbor-filter
When filtering is enabled, all PIM neighbor requests on the specified IP interface
will be denied by default. To allow a specific PIM neighbor, use the following
command:
CN 4093(config-ip-if)# ip pim neighbor-addr <neighbor IPv4 address> allow