Switch 7700 Configuration Guide

PIM-DM Configuration 129
Perform the following configuration in VLAN interface view.
It’s recommended you configure PIM-DM on all interfaces in non-special cases.
This configuration is effective only after the multicast routing is enabled in system
view.
Once enabled PIM-DM on an interface, PIM-SM cannot be enabled on the same
interface and vice versa.
Configure the Interface Hello Message Interval
After PIM is enabled on an interface, it will send Hello messages periodically on the
interface. The interval at which Hello messages are sent can be modified according
to the bandwidth and type of the network connected to the interface.
Perform the following configuration in VLAN interface view.
The default interval is 30 seconds. You can configure the value according to
different network environments. Generally, this parameter does not need to be
modified.
This configuration can be performed only after PIM (PIM-DM or PIM-SM) is
enabled in VLAN interface view.
Display and Debug
PIM-DM
After the above configuration, execute display command in all views to display the
running of PIM-DM configuration, and to verify the effect of the configuration.
Execute debugging command in user view for the debugging of PIM-DM.
Tabl e 20 Enable PIM-DM
Operation Command
Enable PIM-DM on an
interface
pim dm
Disable PIM-DM on an
interface
undo pim dm
Tabl e 21 Configure Hello Message Interval on an Interface
Operation Command
Configure the hello message
interval on an interface
pim timer hello seconds
Restore the interval to the default
value
undo pim timer hello
Tabl e 22 Display and Debug PIM-DM
Operation Command
Display the PIM multicast routing
table
display pim routing-table [ { { *g [ group-address [
mask { mask-length | mask } ] ] | **rp [ rp-address [
mask { mask-length | mask } ] ] } | { group-address [ mask
{ mask-length | mask } ] | source-address [ mask {
mask-length | mask } ] } * } | incoming-interface {
interface-type interface-num | interface-name | null } | {
dense-mode | sparse-mode } ] *
Display the PIM interface
information
display pim interface [ interface-type interface-number
]