Brocade FastIron Ethernet Switch IP Multicast Configuration Guide - Manual (Page 161)

To configure a single SSM group address, enter the following command under the router pim
configuration:
device(config)#router pim
device(config-pim-router)#ssm-enable range 232.1.1.1/8
Syntax: [no] ssm-enable range group-address address-mask
The group-address parameter specifies the multicast address for the SSM address range. If this is not
configured, the range will default to 232/8 as assigned by the Internet Assigned Numbers Authority
(IANA) for use with SSM.
The address-mask parameter specifies the mask for the SSM address range.
To disable SSM, use the [no] form of this command.
Displaying source-specific multicast configuration information
To display PIM Sparse configuration information, use the show ip pim sparse command as described
in
Displaying basic PIM Sparse configuration information on page 105.
Configuring multiple SSM group ranges
The ssm-enable rangeacl-id/acl-name command allows you to configure multiple SSM group ranges
using an ACL.
Configuration Considerations
• The existing ssm-enable rangegroup-addressaddress-mask command will continue to exist.
• The ACL must be configured with the SSM group address in the permit clause of the ssm-enable
rangeacl-id or acl-name command. If the ssm-enable rangegroup-addressaddress-mask
command permits a clause, then that group will also operate in the PIM-SM mode.
• If the ssm-enable rangeacl-id or acl-name command is configured with a non-existent or empty
ACL, then the SSM group will operate in PIM-SM mode (non PIM-SSM mode). However when an
ACL is added or updated, then the group will exist in a PIM-SSM mode. By default, an empty ACL
will deny all.
• By default, the group address mentioned in the IGMPv2 ssm-mapping ACL will decide if the group
address is a PIM-SSM group or non PIM-SSM group. Therefore, if a user wants to prevent a group
from operating in PIM-SSM mode, then the user’s configuration must consistently deny the group in
all configuration options for PIM-SSM range.
• ACL of any type (named or unnamed, standard or extended) can be used to specify the SSM group
range. If an extended ACL is used, then the destination ip address should be used to specify the
group address. Any configuration in the source address of an extended ACL is ignored. Only permit
statements are considered in the ACL configuration. Any deny statements in the ACL clause are
also ignored.
To configure multiple SSM group address using an ACL, enter the following command under the router
pim configuration:
device(config)#router pim
device(config-pim-router)#ssm-enable range xyz
The example displayed above configures PIM so that it uses the group addresses allowed by ACL, xyz
as its PIM SSM range.
Syntax: [no] ssm-enable range acl-id or acl-name
Displaying source-specific multicast configuration information
FastIron Ethernet Switch IP Multicast Configuration Guide 159
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