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NE40E V800R010C10SPC500 Configuration Guide - IP Multicast 01

This is NE40E V800R010C10SPC500 Configuration Guide - IP Multicast
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Configuring Layer 2 Multicast Entry Limit in a VLAN Scenario

Configuring Layer 2 Multicast Entry Limit in a VLAN Scenario

To limit the number of multicast groups in a VLAN scenario, configure Layer 2 multicast entry limit.

Context

On the network shown in Figure 18-8, PE1 is downlinked to a residential network VLAN 20 and uplinked to PE2 through an MPLS or a VPLS network to access the IPTV server. To save link bandwidth between PE1 and the residential network and ensure good subscribers' image experience, configure Layer 2 multicast entry limit for the VLAN on PE1. If some service providers group all the programs into one or more VLAN channels, Layer 2 multicast entry limit can also be configured to limit the multicast group number for each channel. In a VLAN scenario, Layer 2 multicast entry limit can be configured for a VLAN, GE 1/0/1, or a VLAN channel.
Figure 18-8 Configuring Layer 2 multicast entry limit in a VLAN scenario

NOTE:

On this network, PE1 is a Layer 2 device in a VLAN scenario. Configure Layer 2 multicast entry limit on PE1.

Layer 2 multicast entry limit cannot be performed for a protection VLAN.

Layer 2 multicast entry limit can be configured for a VLAN, an interface, or a VLAN on a specified interface. Perform the following configurations as needed.

Procedure

  • On PE1, configure Layer 2 multicast entry limit for a VLAN, an interface, or a VLAN on a specified interface.
    1. Run system-view

      The system view is displayed.

    2. In a VLAN scenario, multicast group number limits can be configured based on different criteria. Choose any of or all the configurations as needed. For details, see Table 18-6.

      Table 18-6 Configuring Layer 2 multicast entry limit based on different criteria

      Criteria

      Multicast Group Number Limit

      VLAN

      1. Run the l2-multicast limit max-entry count vlan { { vlan-id1 [ to vlan-id2 ] } &<1-10> } [ except { acl-number | acl-name acl-name } ] command to configure a multicast group number limit for a VLAN.

        except { acl-number | acl-name acl-name } is used to prevent groups from being counted against the limit. The ACL specified in this command must have been configured.

      Interface

      1. Run the interface interface-type interface-number command to enter the view of an Ethernet, a GE, or an Eth-Trunk interface.
      2. Run the portswitch command to switch the interface to a Layer 2 interface.
      3. Run the l2-multicast limit max-entry count [ except { acl-number | acl-name acl-name } ] command to configure a multicast group number limit for the interface.

        except { acl-number | acl-name acl-name } is used to prevent groups from being counted against the limit. The ACL specified in this command must have been configured.

      Interface + VLAN

      1. Run the interface interface-type interface-number command to enter the view of an Ethernet, a GE, or an Eth-Trunk interface.
      2. Run the portswitch command to switch the interface to a Layer 2 interface.
      3. Run the l2-multicast limit max-entry count [ vlan { { vlan-id1 [ to vlan-id2 ] } &<1-10> } ] [ except { acl-number | acl-name acl-name } ] command to configure a multicast group number limit for a specified VLAN on the interface.

        except { acl-number | acl-name acl-name } is used to prevent groups from being counted against the limit. The ACL specified in this command must have been configured.

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Updated: 2019-01-03

Document ID: EDOC1100055017

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