Cisco Systems 3750E manual Configuring Multi-VRF CE, 38-64

Chapter 38 Configuring IP Unicast Routing

Configuring Multi-VRF CE

Table 38-11	IP BGP Clear and Show Commands (continued)
Command		Purpose
show ip bgp prefix		Display peer groups and peers not in peer groups to which the
		prefix has been advertised. Also display prefix attributes such as
		the next hop and the local prefix.
show ip bgp cidr-only		Display all BGP routes that contain subnet and supernet network
		masks.
show ip bgp community [community-number] [exact]		Display routes that belong to the specified communities.
show ip bgp community-list community-list-number		Display routes that are permitted by the community list.
[exact-match]
show ip bgp filter-list access-list-number		Display routes that are matched by the specified AS path access
		list.
show ip bgp inconsistent-as		Display the routes with inconsistent originating autonomous
		systems.
show ip bgp regexp regular-expression		Display the routes that have an AS path that matches the specified
		regular expression entered on the command line.
show ip bgp		Display the contents of the BGP routing table.
show ip bgp neighbors [address]		Display detailed information on the BGP and TCP connections to
		individual neighbors.
show ip bgp neighbors [address] [advertised-routes		Display routes learned from a particular BGP neighbor.
dampened-routes flap-statistics paths
regular-expressionreceived-routes routes]
show ip bgp paths		Display all BGP paths in the database.
show ip bgp peer-group [tag] [summary]		Display information about BGP peer groups.
show ip bgp summary		Display the status of all BGP connections.

You can also enable the logging of messages generated when a BGP neighbor resets, comes up, or goes down by using the bgp log-neighbor changes router configuration command.

Configuring Multi-VRF CE

Virtual Private Networks (VPNs) provide a secure way for customers to share bandwidth over an ISP backbone network. 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.

The Catalyst 3750-E or 3560-E switch supports multiple VPN routing/forwarding (multi-VRF) instances in customer edge (CE) devices (multi-VRF CE) when the switch is running the IP services or advanced IP services feature set. Multi-VRF CE allows a service provider to support two or more VPNs with overlapping IP addresses.

Note The switch does not use Multiprotocol Label Switching (MPLS) to support VPNs. For information about MPLS VRF, see the Cisco IOS Switching Services Configuration Guide, Release 12.2.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
38-64	OL-9775-02