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3 dcscm typical examples – Amer Networks SS2R48G4i V2 User Manual

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SS2R24G4i/SS2R48G4i

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[no] ip multicast destination-control

access-group <6000-7999>

To configure the rule used in source
control to specified source IP
address/MASK, prefixing the
command with “NO” will cancel the
configuration.


3. Configuration of mulicast policy

mulicast policy satisfies the demand of special users by designating priority for specified multicast

data. What calls for attention is that multicast data can only be taken special care when it is transmitted
on TRUNK . The following is the command to configure(set a priority for the specified multgicast)

Command Explantation

Global configuration mode

[no] ip multicast policy

cos

Configure the multicast policy, set

priority for source within a special

range. The range of priority is <0-7>.

13.3 DCSCM Typical Examples

1. Souce control

To prevent a boundary switch to send multicast data freely, we configure on the boundary switch

that, only the switch connected to port Ethernet0/0/5 is allowed to send multicast data, and the group of
the data has to be 225.1.2.3. But the uplink port Ethernet0/0/25 can forward multicast data without
limitation. The following is the configuration we can make

Switch(Config)#access-list 5000 permit ip any host 225.1.2.3
Switch(Config)#access-list 5001 permit ip any any
Switch(Config)#ip multicast source-control
Switch(Config)#interface Ethernet0/0/5

Switch(Config-If-Ethernet0/0/5)#ip multicast source-control access-group 5000

Switch(Config)#interface Ethernet0/0/25

Switch(Config-If-Ethernet0/0/25)#ip multicast source-control access-group 5001

Destination control

We can confiure as follows if we want to prevent the users in 10.0.0.0/8 segment to join the group

238.0.0.0/8

Firstly, to enable IGMP snooping in the VLAN it is in(assumed to be VLAN2)

Switch(Config)#ip igmp snooping

Switch(Config)#ip igmp snooping vlan 2

Then, configure the relative detination control ACL, and configure the specified IP to use the ACL.

Switch(Config)#access-list 6000 deny ip any 238.0.0.0 0.255.255.255

Switch(Config)#access-list 6000 permit ip any any
Switch(Config)#ip

multicast destination-control

Switch(Config)#ip multicast destination-control 10.0.0.0 0.255.255.255 access-group 6000

Thus, the users of this segment can only join the groups other than 238.0.0.0/8

3. Multicast policy