Ip Multicast Layer 3 Switching Configuration Guidelines And Restrictions; Pfc2 With Mscf2; Pfc1 With Msfc Or Mscf2 - Cisco 6500 Series Software Configuration Manual

IP Multicast Layer 3 Switching Configuration Guidelines and Restrictions

IP Multicast Layer 3 Switching Configuration Guidelines and
Restrictions
These sections describe IP Multicast Layer 3 switching configuration restrictions:
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PFC2 with MSCF2

In systems with PCF2 and MSFC2, IP multicast Layer 3 switching is not provided for an IP multicast
flow in the following situations:
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PFC1 with MSFC or MSCF2

In systems with PFC1 and MSFC or MSFC2, IP multicast Layer 3 switching is not provided for an IP
multicast flow in the following situations:
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Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
18-8
PFC2 with MSCF2, page 18-8
PFC1 with MSFC or MSCF2, page 18-8
PFC1 and PFC2 General Restrictions, page 18-9
Unsupported Features, page 18-9
For IP multicast groups that fall into the range 224.0.0.* (where * is in the range 0 to 255), which
is used by routing protocols. Layer 3 switching is supported for groups 225.0.0.* through 239.0.0.*
and 224.128.0.* through 239.128.0.*.
Groups in the 224.0.0.* range are reserved for routing control packets and must be flooded
Note
to all forwarding ports of the VLAN. These addresses map to the multicast MAC address
range 01-00-5E-00-00-xx, where xx is in the range 0–0xFF.
For PIM auto-RP multicast groups (IP multicast group addresses 224.0.1.39 and 224.0.1.40).
If the SPT bit for the flow is cleared when running PIM sparse mode for the interface or group.
For packets with IP options. However, packets in the flow that do not specify IP options are hardware
switched.
For source traffic received on tunnel interfaces (such as MBONE traffic).
For IP multicast groups that fall into these ranges (where * is in the range 0 to 255):
224.0.0.* through 239.0.0.*
224.128.0.* through 239.128.0.*
Note Groups in the 224.0.0.* range are reserved for routing control packets and must be flooded
to all forwarding interfaces of the VLAN. All these addresses map to the multicast MAC
address range 01-00-5E-00-00-xx, where xx is in the range 0–0xFF.
For PIM auto-RP multicast groups (IP multicast group addresses 224.0.1.39 and 224.0.1.40).
For flows that are forwarded on the multicast-shared tree (that is, {*,G,*} forwarding) when the
interface or group is running PIM sparse mode.
Chapter 18 Configuring IP Multicast Layer 3 Switching
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