Layer 3 Features; Layer 3 Vpn Services - Cisco 3845 - Security Bundle Router Software Manual

Features

Layer 3 Features

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Layer 3 VPN Services

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Cisco ME 3800X and 3600X Switch Software Configuration Guide
1-8
HSRP Version 1 (HSRPv1) and HSRP Version 2 (HSRPv2) for Layer 3 router redundancy
IP routing protocols for load balancing and for constructing scalable, routed backbones:
– RIP Versions 1 and 2
– OSPF
EIGRP
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BGP Version 4
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IS-IS dynamic routing
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BFD protocol Bidirectional Forwarding Detection (BFD) Protocol to detect forwarding-path
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failures for OSPF, IS-IS, BGP, EIGRP, or HSRP routing protocols
IP routing between VLANs (inter-VLAN routing) for full Layer 3 routing between two or more
VLANs, allowing each VLAN to maintain its own autonomous data-link domain
Static IP routing for manually building a routing table of network path information
Equal-cost routing for load balancing and redundancy
Internet Control Message Protocol (ICMP) and ICMP Router Discovery Protocol (IRDP) for using
router advertisement and router solicitation messages to discover the addresses of routers on directly
attached subnets
Protocol-Independent Multicast (PIM) for multicast routing within the network, allowing for
devices in the network to receive the multicast feed requested and for switches not participating in
the multicast to be pruned. Includes support for PIM sparse mode (PIM-SM), PIM dense mode
(PIM-DM), and PIM sparse-dense mode
Support for the SSM PIM protocol to optimize multicast applications, such as video
DHCP relay for forwarding UDP broadcasts, including IP address requests, from DHCP clients
Multiple VPN routing/forwarding (multi-VRF) instances in customer edge devices (multi-VRF CE)
to allow service providers to support multiple virtual private networks (VPNs) and overlap IP
addresses between VPNs
VRF and EIGRP compatibility
VRF-aware services
Support for MPLS VPNs provides the capability to deploy and administer scalable Layer 3 VPN
services to business customers. Each VPN is associated with one or more VPN routing/forwarding
(VRF) instances that include routing and forwarding tables and rules that define the VPN
membership.
Support for MPLS Operations, Administration, and Maintenance (OAM) functionality for
monitoring lab switched paths (LSPs) and isolating MPLS forwarding problems.
Multiple VPN multi-VRF instances in customer edge devices to allow service providers to support
multiple VPNs and to overlap IP addresses between VPNs.
Support for MPLS traffic engineering and fast reroute link protection for rerouting LSP traffic
around a failed link
Chapter 1 Overview
OL-23400-01