6-3
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 6 Configuring SDM Templates
Configuring the Switch SDM Template
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 6-2 defines the approximate feature resources allocated by each dual template. Template
estimations are based on a switch with 8 routed interfaces and approximately 1000 VLANs.
Configuring the Switch SDM Template
• Default SDM Template, page 6-3
• SDM Template Configuration Guidelines, page 6-4
• Setting the SDM Template, page 6-4
Default SDM Template
The default template for a switch running the metro IP access image is the default template.
The default (and only) template supported on switches running the metro base or metro access image is
the layer-2 template.
Ta b l e 6-2 Approximate Feature Resources Allowed by Dual IPv4-IPv6 Templates
Resource
IPv4-and-IPv6
Default
IPv4-and-IPv6
Routing
IPv4-and-IPv6
VLAN
Unicast MAC addresses 2 K 1.5 K 8 K
IPv4 IGMP groups and multicast routes 1 K 1K 1 K
Total IPv4 unicast routes: 3 K 2.75 K 0
• Directly connected IPv4 hosts 2 K 1.5 K 0
• Indirect IPv4 routes 1 K 1.25 K 0
IPv6 multicast groups 1 K 1 K 1 K
Total IPv6 unicast routes: 3 K 2.75 K 0
• Directly connected IPv6 addresses 2 K 1.5 K 0
• Indirect IPv6 unicast routes 1 K 1.25 K 0
IPv4 policy-based routing ACEs 0 0.25 K 0
IPv4 or MAC QoS ACEs (total) 0.75 K 0.75 K 0.75 K
IPv4 or MAC security ACEs (total) 1 K 0.5 K 1K
IPv6 policy-based routing ACEs
1
1. IPv6 policy-based routing is not supported.
0 0.25 K 0
IPv6 QoS ACEs 0.5 K 0.5 K 0.5 K
IPv6 security ACEs 0.5 K 0.5 K 0.5 K
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