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Cisco ME 3400 User Manual

Cisco ME 3400
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1-16
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 1 Overview
Network Configuration Examples
provider edge (UPE) switch configuration and management. You can use Cisco ME 3400 switches to
form Layer 2 VPNs so that customers at different locations can exchange information through a
service-provider network without requiring dedicated connections.
In Figure 1-2, Cisco ME 3400 switches are used as UPEs in customer sites connected to
customer-premises equipment (CPE) switches. The switches can tag customer traffic with the
service-provider VLAN ID on top of the customer’s IEEE 802.1Q tag. By supporting double tags, the
Cisco ME 3400 switch provides a virtual tunnel for each customer and prevents VLAN ID overlaps
between customers. In addition to data-plane separation, the Cisco ME 3400 switch can also tunnel the
customer’s control protocols. With Layer 2 protocol tunneling, the switch can encapsulate each
customer’s control-plane traffic and send it transparently across the service-provider network.
See Chapter 13, “Configuring IEEE 802.1Q Tunneling and Layer 2 Protocol Tunneling, for more
information on configuring these features.
Figure 1-2 Layer 2 VPN Configuration
Multi-VRF CE Application
A VPN is a collection of sites sharing a common routing table. A customer site is connected to the
service-provider network by one or more interfaces, and the service provider associates each interface
with a VPN routing table, called a VPN routing/forwarding (VRF) table. Multiple VPN
routing/forwarding (multi-VRF) instances in customer edge (CE) devices (multi-VRF CE) allows a
service provider to support two or more VPNs with overlapping IP addresses.
92997
CPE
VLAN 50-120
VLAN 35-60
SP Metro core
SP VLAN 5
SP VLAN 8
UPE
UPE
UPE
UPE
VLAN 50-120
CPE
CPE
CPE
Customer
VLAN 35-60
Corp A, site 1
Corp B, site 2
Corp A, site 2
Corp B, site 3
Corp B, site 1
Customer building
UPE = Cisco ME 3400 switch
CPE
Customer
VLAN 50-120
SP VLAN 8SP VLAN 8
SP VLAN 8SP VLAN 8
SP VLAN 5SP VLAN 5
Customer building
Customer building
Customer building

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Cisco ME 3400 Specifications

General IconGeneral
CategorySwitch
Rack MountableYes
Jumbo Frame SupportYes
Authentication MethodRADIUS, TACACS+
RAM128 MB
Flash Memory32 MB
Power DeviceInternal power supply
ModelME 3400
LayerLayer 2
MAC Address Table Size8000 entries
Remote Management ProtocolSNMP, Telnet, SSH, HTTP, HTTPS
FeaturesVLAN support, IGMP snooping, Quality of Service (QoS)
Compliant StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.3x
Memory128 MB
Power SupplyAC 120/230 V (50/60 Hz)
Dimensions (H x W x D)4.4 cm x 44.5 cm x 24.2 cm
Routing ProtocolStatic routing

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