User's Manual

42-74
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 42 Configuring IP Unicast Routing
Configuring Multi-VRF CE
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 switch supports multiple VPN routing/forwarding (multi-V
RF) instances in customer edge (CE)
devices (multi-VRF CE) when the it 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.
Ta ble 42-13 ISO CLNS and IS-IS Clear and Show Commands
Command Purpose
clear clns cache Clear and reinitialize the CLNS routing cache.
clear clns es-neighbors Remove end system (ES) neighbor information from the adjacency database.
clear clns is-neighbors Remove intermediate system (IS) neigh
bor information from the adjacency
database.
clear clns neighbors Remove CLNS neighbor information from the adjacency database.
clear clns route Remove dynamically derived CLNS routing information.
show clns Display information about the CLNS network.
show clns cache Display the entries in the CLN
S routing cache.
show clns es-neighbors Display ES neighbor entries, including the associated areas.
show clns f
ilter-expr Display filter expressions.
show clns filter-set Display filter sets.
show clns interface [in
terface-id] Display the CLNS-specific or ES-IS information about each interface.
show clns neighbor Display information about IS-IS neighbors.
show clns protocol List the protocol-specific information for each IS
-IS or ISO IGRP routing
process in this router.
show clns route Display all the destinations to which this router knows how to route CLNS
pa
ckets.
show clns traffic Display information about the CLNS pack
ets this router has seen.
show ip route isis Display the current state of the ISI
S IP routing table.
show isis database Display the IS-IS link-state database.
show isis routes Display the IS-IS Level 1 routing table.
show isis spf-log Display a history of the shortest path first (SPF) calculations for IS-IS.
show isis topology Display a list of all connected routers in all areas.
show route-map Display all route maps configured or only the one specified.
trace clns destin
ation Discover the paths taken to a specified destination by packets in the network.
which-route {n
sap-address | clns-name} Display the routing table in which the specified CLNS destination is found.