Cisco Catalyst 3850 series User Manual

Restrictions for Configuring Wireless Multicast
The following are the restrictions for configuring IP multicast routing:
•
Access points in monitor mode, sniffer mode, or rogue detector mode do not join the CAPWAP multicast
group address.
•
The CAPWAP multicast group configured on the should be different for different devices.
•
Multicast routing should not be enabled for the management interface.
Restrictions for IPv6 Snooping
The IPv6 snooping feature is not supported on Etherchannel ports.
Restrictions for IPv6 RA Guard
•
The IPv6 RA Guard feature does not offer protection in environments where IPv6 traffic is tunneled.
•
This feature is supported only in hardware when the ternary content addressable memory (TCAM) is
programmed.
•
This feature can be configured on a switch port interface in the ingress direction.
•
This feature supports host mode and router mode.
•
This feature is supported only in the ingress direction; it is not supported in the egress direction.
•
This feature is not supported on EtherChannel and EtherChannel port members.
•
This feature is not supported on trunk ports with merge mode.
•
This feature is supported on auxiliary VLANs and private VLANs (PVLANs). In the case of PVLANs,
primary VLAN features are inherited and merged with port features.
•
Packets dropped by the IPv6 RA Guard feature can be spanned.
•
If the platform ipv6 acl icmp optimize neighbor-discovery command is configured, the IPv6 RA
Guard feature cannot be configured and an error message will be displayed. This command adds default
global Internet Control Message Protocol (ICMP) entries that will override the RA guard ICMP entries.
Information About Wireless Multicast
If the network supports packet multicasting, the multicast method that the device uses can be configured. The
device performs multicasting in two modes:
• Unicast mode—The device unicasts every multicast packet to every access point associated to the device.
This mode is inefficient but might be required on networks that do not support multicasting.
• Multicast mode—The device sends multicast packets to a CAPWAP multicast group. This method
reduces overhead on the device processor and shifts the work of packet replication to the network, which
is much more efficient than the unicast method.
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)
242 OL-32598-01
Configuring Wireless Multicast
Restrictions for Configuring Wireless Multicast

Cisco Catalyst 3850 series Specifications

General

Brand	Cisco
Model	Catalyst 3850 series
Category	Switch
Language	English