Filter
Top Products
8-2
Catalyst 3750 Switch Software Configuration Guide
OL-8550-09
Chapter 8 Configuring SDM Templates
Understanding the SDM Templates
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.
Dual IPv4 and IPv6 SDM Templates
You can select SDM templates to support IP Version 6 (IPv6). For more information about IPv6 and how
to configure IPv6 routing, see Chapter 38, “Configuring IP Unicast Routing.”
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:
• Desktop 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 desktop switches (all Catalyst 3750 switches
except Catalyst 3750-12S).
• Desktop 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 desktop
switches (all Catalyst 3750 switches except Catalyst 3750-12S).
• Desktop 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 desktop switches.
• Aggregator dual IPv4 and IPv6 default template—supports Layer 2, multicast, routing, QoS, and
ACLs for IPv4, and Layer 2 and routing for IPv6 on Catalyst 3750-12S aggregator switches.
• Aggregator 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
Catalyst 3750-12S aggregator switches.
Table 8-1 Approximate Number of Feature Resources Allowed by Each Template for Desktop or Aggregator Switches
Resource
Desktop Templates Aggregator Templates
Access Default Routing VLAN Access Default Routing VLAN
Unicast MAC addresses 4 K 6 K 3 K 12 K 6 K 6 K 6 K 12 K
IGMP groups and multicast routes 1 K 1 K 1 K 1 K 1 K 1 K 1 K 1 K
Unicast routes 6 K 8 K 11 K0 12 K12 K20 K0
• Directly connected hosts 4 K 6 K 3 K 0 6 K 6 K 6 K 0
• Indirect routes 2 K 2 K 8 K 0 6 K 6 K 14 K 0
Policy-based routing ACEs 512 0 512 0 512 0 512 0
QoS classification ACEs 512 512 512 512 896 896 512 896
Security ACEs 2 K1 K1 K1 K4 K1 K1 K1 K
Layer 2 VLANs 1 K1 K1 K1 K1 K1 K1 K1 K