Cisco Systems 10000 manual Ethernet Aggregation, Sonet/Sdh, Mpls Provider Edge Applications

The Cisco 10000 Series offers a full range of ATM interfaces, from DS3/E3 copper through OC-12/STM-4. The platform supports ATM classes of service (CoSs), including UBR, UBR+, VBR-nrt, and CBR with extensive IP QoS to ATM CoS interworking. A rich ATM feature set is supported, including accurate and scalable traffic shaping as well as operations, administration, and maintenance (OAM) facilities.

Ethernet Aggregation

Ethernet is becoming more prevalent in metropolitan areas throughout the world, with many providers now offering high-speed Internet and VPN access over local fiber-optic networks (Figure 10).

Figure 10

Ethernet Architecture

	Gigabit
Business	Ethernet
	Cisco
Customer Ethernet
	10000	IP Network
	Series
IP		IP

Ethernet

SONET/SDH

Many enterprise customers use Ethernet technology for the “hub” site within a VPN network. “Spoke” sites are generally connected to the service provider’s infrastructure with lower speed fixed circuits, such as those mentioned previously. Customer connections are usually defined as 802.1Q virtual LAN (VLAN) logical interfaces under the main Ethernet interface. The Cisco 10000 Series supports both Gigabit and Fast Ethernet interfaces with a rich set of high-value IP services, including QoS and ACLs.

MPLS Provider Edge Applications

Figure 11

MPLS Architecture

Office 1	Cisco 10000			Customer
		MPLS Core		Edge
(VPN-A)	Series
				VPN-A
Office 2			Cisco 10000
(VPN-B)	Provider Edge		Series
	Cisco 10000
Office 3	Series	IP Network	Provider	Customer
				Edge
(VPN-A)			Edge
				VPN-B
Office 4	Provider Edge
(VPN-B)
Access Protocol		MPLS VPN		IP

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