Specifying The Maximum Number Of Multicast Routes; Configuring The Layer 3 Switching Global Threshold - Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual

Chapter 25 Configuring IPv4 Multicast Layer 3 Switching

Specifying the Maximum Number of Multicast Routes

By default, a PFC3B supports 32,000 multicast routes in sparse mode. The following default settings
apply for maximum number of multicast routes:
•
•
•
By entering the mls ip multicast max-routes command, you can increase the maximum number of
multicast routes to 64,000 for PIM-SM/DM/SSM with either ingress- and egress-replication mode.
Rate limiting of directly connected sources is not available if you increase the maximum number of
Note
multicast routes above the default values.
To change the maximum number of multicast routes supported for PIM-SM/DM/SSM, perform this task:
Command
Step 1
Router(config)# mls ip multicast max-routes
Step 1
Router# show mls ip multicast

Configuring the Layer 3 Switching Global Threshold

You can configure a global multicast rate threshold (specified in packets per second) below which all
multicast traffic is routed by the PISA. This configuration prevents creation of switching cache entries for
low-rate Layer 3 flows.
This command does not affect flows that are already being routed. To apply the threshold to existing
Note
routes, clear the route and let it reestablish.
To configure the Layer 3 switching threshold, perform this task:
Command
Router(config)# mls ip multicast threshold ppsec
Router(config)# no mls ip multicast threshold
This example shows how to configure the Layer 3 switching threshold to 10 packets per second:
Router(config)# mls ip multicast threshold 10
Router(config)#
OL-11439-03
32,000 for PIM-SM/DM/SSM for ingress- or egress-replication mode
32,000 for IPv4 bidirectional PIM ingress-replication mode
10,700 for IPv4 bidirectional PIM egress-replication mode
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
Configuring IPv4 Multicast Layer 3 Switching
Purpose
Specifies the maximum number of multicast routes.
Displays the multicast route configuration.
Purpose
Configures the IP MMLS threshold.
Reverts to the default IP MMLS threshold.
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