Multicast - Cisco Catalyst 6500 User Manual

(WS−SVC−NAM−1 and
WS−SVC−NAM−2)
Application Control Engine
(ACE10 and ACE20)
(ACE10−6500−K9 and
ACE20−MOD−K9)
Intrusion Detection System
Services Module (IDSM−2)
(WS−SVC−IDSM2−K9)
Wireless Services Module
(WiSM)
(WS−SVC−WISM−1−K9)
Firewall Services Module
(FWSM)
(WS−SVC−FWM−1−K9)
Service modules can be placed in either of the physical chassis that comprise a VSS.
Recommendations
•
For configuration with more than one service module of a given type, configure one in each physical
switch for best availability.
•
VSL carries traffic under normal and failover scenarios, VSL bandwidth must be tuned accordingly.
Refer to Integrate Cisco Service Modules with Cisco Catalyst 6500 Virtual Switching System 1440 for more
information on service module integration.

Multicast

The IPv4 multicast protocols run on the active supervisor engine. Internet Group Management Protocol
(IGMP) and Protocol Independent Multicast (PIM) protocol packets received on the standby supervisor
engine are transmitted across VSL to the active chassis. The active supervisor engine sends IGMP and PIM
protocol packets to the standby supervisor engine in order to maintain Layer 2 information for stateful
switchover (SSO).
Refer to IPv4 Multicast for more information.
Recommendations
•
Connected devices must always be dual−homed for optimal replication performance.
12.2(33)SXI A2(1.3)
12.2(33)SXI 6.0(2)E1
12.2(33)SXI 3.2.171.6
12.2(33)SXI 4.0.4