Cisco Systems 3560 사용자 설명서

The first eight rows in the tables (unicast MAC addresses through security ACEs) represent approximate 
hardware boundaries set when a template is selected. If a section of a hardware resource is full, all 
processing overflow is sent to the CPU, seriously impacting switch performance. The last row is a 
guideline used to calculate hardware resource consumption related to the number of Layer 2 VLANs on 
the switch. 

You can select SDM templates to support IP Version 6 (IPv6). For more information about IPv6 and how 
to configure IPv6 routing, see 

This software release does not support Policy-Based Routing (PBR) when forwarding IPv6 traffic. The 
software supports IPv4 PBR only when the dual-ipv4-and-ipv6 routing template is configured.

The dual IPv4 and IPv6 templates allow the switch to be used in dual stack environments (supporting 
both IPv4 and IPv6). Using the dual stack templates results in less TCAM capacity allowed for each 
resource. Do not use them if you plan to forward only IPv4 traffic.

These SDM templates support IPv4 and IPv6 environments:

Dual IPv4 and IPv6 default template—supports Layer 2, multicast, routing, QoS, and ACLs for 
IPv4; and Layer 2, routing, and ACLs for IPv6 on the switch

Dual IPv4 and IPv6 routing template—supports Layer 2, multicast, routing (including policy-based 
routing), QoS, and ACLs for IPv4; and Layer 2, routing, and ACLs for IPv6 on the switch

Dual IPv4 and IPv6 VLAN template—supports basic Layer 2, multicast, QoS, and ACLs for IPv4, 
and basic Layer 2 and ACLs for IPv6 on the switch

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. For example, for IPv6 directly connected IP addresses, the desktop template might allow less 
than two thousand entries. 

 defines the approximate feature resources allocated by each new template. Template 

estimations are based on a switch with 8 routed interfaces and approximately 1000 VLANs. 

Unicast MAC addresses

4 K

6 K

3 K

12 K

IGMP groups and multicast routes

1 K

1 K

1 K

1 K

Unicast routes

6 K

8 K

11 K

0

Directly connected hosts

4 K

6 K

3 K

0

Indirect routes

2 K

2 K

8 K

0

Policy-based routing ACEs

512

0

512

0

QoS classification ACEs

512 

512

512

512

Security ACEs

2 K

1 K

1 K

1 K

Layer 2 VLANs

1 K

1 K

1 K

1 K