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Cisco Catalyst Blade Switch 3130 for Dell Software Configuration Guide
OL-13270-01
Chapter38 Configuring IP Unicast Routing Configuring Multi-VRF CE
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 mor e interfa ces, an d the ser vice pro vider associat es
each interface with a VPN routing table, called a VPN routing/forwarding (VRF) table.
The 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.
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
[exact-match]Display routes that are permitted by the community list.
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 |
dampened-routes | flap-statistics | paths
regular-expression | received-routes | routes]
Display routes learned from a particular BGP neighbor.
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.
Table38-11 IP BGP Clear and Show Commands (continued)
Command Purpose