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Catalyst 2960 Switch Software Configuration Guide
OL-8603-04
Chapter 29 Configuring IPv6 Host Functions
Configuring IPv6
Dual IPv4-and-IPv6 SDM Templates
These SDM templates support IPv4 and IPv6 environments:
Note This release does not support IPv6 multicast routing or QoS. This release does support IPv6 Multicast
Listener Discovery (MLD) snooping.
• Dual IPv4 and IPv6 default SDM template—supports Layer 2, QoS, and ACLs for IPv4; and Layer
2 and ACLs for IPv6 on the switch.
Note An IPv4 route requires only one TCAM entry. Because of the hardware compression scheme used for
IPv6, an IPv6 route can take more than one TCAM entry, reducing the number of entries forwarded in
hardware.
Table 29-1 defines the approximate feature resources allocated by each new template.
Configuring IPv6
These sections contain this IPv6 forwarding configuration information:
• Default IPv6 Configuration, page 29-8
• Configuring IPv6 ICMP Rate Limiting, page 29-8
• Configuring Static Routes for IPv6, page 29-9
Table 29-1 Approximate Number of Feature Resources Allowed by Each Template
Resource Default QoS Dual
Unicast MAC addresses 8 K 8 K 8 K
IPv4 IGMP groups + multicast routes .25 K .25 K .25 K
IPv4 unicast routes 0 0 0
IPv6 multicast groups 0 0 .25 K
Directly connected IPv6 addresses 0 0 0
Indirect IPv6 unicast routes 0 0 0
IPv4 policy-based routing aces 0 0 0
IPv4 MAC QoS ACEs 128 384 .25 K
IPv4 MAC security ACEs 384 128 .25 K
IPv6 policy-based routing aces 0 0 0
IPv4 MAC QoS ACEs 0 0 0
IPv4 MAC security ACEs 0 0 0
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