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This appendix provides a command reference for the new or modified Cisco IOS commands used to configure MPLS VPNs. All other commands used with MPLS VPNs are documented in the Cisco IOS Release 12.0 Command Reference. The commands listed in this appendix are as follows:
address-family | route-target |
clear ip route vrf | show ip bgp vpnv4 |
exit-address-family | show ip cef vrf |
import map | show ip protocols vrf |
ip route vrf | show ip route vrf |
ip vrf | show ip vrf |
ip vrf forwarding | show tag-switching forwarding vrf |
neighbor activate | debug ip bgb |
rd |
|
In Cisco IOS Release 12.0(1)T or later, you can search and filter the output for show and more commands. This functionality is useful when you need to sort through large amounts of output, or if you want to exclude output that you do not need to see.
To use this functionality, enter a show or more command followed by the pipe character ( | ), one of the keywords begin, include, or exclude, and an expression that you want to search or filter on:
command | {begin | include | exclude} regular-expression
Below is an example of the show atm vc command in which the command output begins with the first line where the expression "PeakRate" appears:
show atm vc | begin PeakRate
For more information on the search and filter functionality, refer to the Cisco IOS Release 12.0(1)T feature module titled CLI String Search.
To enter the address family submode for configuring routing protocols, such as BGP, RIP, and static routing, use the address-family global configuration command.To disable the address family submode for configuring routing protocols, use the no form of this command.
address-family vpnv4 [unicast]
no address-family vpnv4 [unicast]
IPv4 unicast
address-family ipv4 [unicast]
no address-family ipv4 [unicast]
address-family ipv4 [unicast] vrf vrf_name
no address-family ipv4 [unicast] vrf vrf_name
ipv4 | Configures sessions that carry standard IPv4 address prefixes. |
vpnv4 | Configures sessions that carry customer VPN-IPv4 prefixes, each of which has been made globally unique by adding an 8-byte route distinguisher. |
unicast | (Optional) Specifies unicast prefixes. |
vrf vrf_name | Specifies the name of a VPN routing/forwarding instance (VRF) to associate with submode commands. |
Routing information for address family IPv4 is advertised by default when you configure a BGP session using the neighbor...remote-as command unless you execute the no bgp default ipv4-activate command.
Using the address-family command puts you in address family configuration submode (prompt: (config-router-af)# ). Within this submode, you can configure address-family specific parameters for routing protocols, such as BGP, that can accommodate multiple Layer 3 address families.
To leave address family configuration submode and return to router configuration mode, enter exit-address-family, or simply exit.
The address-family command in the following example puts the router into address family configuration submode for the VPNv4 address family. Within the submode, you can configure advertisement of NLRI for the VPNv4 address family using neighbor activate and other related commands:
(config)# router bgp 100
(config-router)# address-family vpnv4
(config-router-af)#
The command in the following example puts the router into address family configuration submode for the IPv4 address family. Use this form of the command, which specifies a VRF, only to configure routing exchanges between PE and CE devices. This address-family command causes subsequent commands entered in the submode to be executed in the context of VRF vrf2. Within the submode, you can use neighbor activate and other related commands to accomplish the following:
Enter the address family submode as follows:
(config)# router bgp 100
(config-router)# address-family ipv4 unicast vrf v2
(config-router-af)#
exit-address-family | Exits address family submode. |
neighbor activate | Exchanges an address with a neighboring router. |
To remove routes from the VRF routing table, use the clear ip route vrf EXEC command.
clear ip route vrf vrf_name {* | network [mask]}
vrf_name | Name of the VPN routing/forwarding instance (VRF) for the static route. |
* | Deletes all routes for a given VRF. |
network | Destination to be removed, in dotted-decimal format. |
mask | (Optional) Mask for the specified network destination, in dotted-decimal format. |
Use this command to clear routes from the routing table. Use the asterisk ( * ) to delete all routes from the forwarding table for a specified VRF, or enter the address and mask of a particular network to delete the route to that network.
The following command removes the route to the network 10.13.0.0 in the v1 routing table:
Router#clear ip route vrf v1 10.13.0.0
show ip route vrf | Displays the IP routing table associated with a VRF. |
To exit from the address family submode, use the exit-address-family address family submode command.
exit-address-family
This command has no arguments or keywords. It has no default behavior or values.
You can abbreviate this command to exit.
The following example shows how to exit the address-family command mode:
(config-router-af)#exit-address-family
address-family | Enters the address family submode used to configure routing protocols. |
To configure an import route map for a VRF, use the import VRF submode command.
import map route-map
route-map | Specifies the route map to be used as an import route map for the VRF. |
There is no default. A VRF has no import route map unless one is configured using the import map command.
Use an import route map when an application requires finer control over the routes imported into a VRF than provided by the import and export extended communities configured for the importing and exporting VRF.
The import-map command associates a route map with the specified VRF. You can filter routes that are eligible for import into a VRF, based on the route target extended community attributes of the route, through the use of a route map.
The route map might deny access to selected routes from a community that is on the import list.
The following example shows how to configure an import route map for a VRF:
(config)#ip vrf v1:blue
(config-vrf)#import map blue_import_map
ip vrf | Enters VRF configuration mode. |
route-target | Configures import and export extended community attributes for the VRF. |
show ip vrf | Displays information about a VRF or all VRFs. |
ip route vrf vrf_name prefix mask [next-hop-address] [interface {interface-number}]
[global] [distance] [permanent] [tag tag]
no ip route vrf vrf_name prefix mask [next-hop-address] [interface {interface-number}]
[global] [distance] [permanent] [tag tag]
vrf_name | Name of the VPN routing/forwarding instance (VRF) for the static route. |
prefix | IP route prefix for the destination, in dotted-decimal format |
mask | Prefix mask for the destination, in dotted-decimal format |
next-hop-address | (Optional) IP address of the next hop (the forwarding router that can be used to reach that network). |
interface | (Optional) Type of network interface to use: ATM, Ethernet, loopback, POS (packet over SONET), or null. |
interface-number | Number identifying the network interface to use. |
global | Specifies that the given next hop address is in the non-VRF routing table. |
distance | (Optional) An administrative distance for this route |
permanent | (Optional) Specifies that this route will not be removed, even if the interface shuts down. |
tag tag | (Optional) Label value that can be used for controlling redistribution of routes through route maps. |
Use a static route when the Cisco IOS software cannot dynamically build a route to the destination.
If you specify an administrative distance when you set up a route, you are flagging a static route that can be overridden by dynamic information. For example, IGRP-derived routes have a default administrative distance of 100. To set a static route to be overridden by an IGRP dynamic route, specify an administrative distance greater than 100. Static routes each have a default administrative distance of 1.
Static routes that point to an interface are advertised through RIP, IGRP, and other dynamic routing protocols, regardless of whether the routes are redistributed into those routing protocols. That is, static routes configured by specifying an interface lose their static nature when installed into the routing table.
However, if you define a static route to an interface not defined in a network command, no dynamic routing protocols advertise the route unless a redistribute static command is specified for these protocols.
(config)#ip route vrf vpn3 137.23.0.0 255.255.0.0 131.108.6.6
show ip route vrf | Displays the IP routing table associated with a VRF. |
To configure a VRF routing table, use the ip vrf global configuration command. To remove a VRF routing table, use the no form of this command.
ip vrf vrf_name
no ip vrf vrf_name
vrf_name | Name assigned to a VRF. |
By default, no VRFs are defined. No import or export lists are associated with a VRF. No route maps are associated with a VRF.
The ip vrf vrf_name command creates a VRF routing table and a CEF (forwarding) table, both named vrf_name.
The default route distinguisher value route-distinguisher is also associated with these tables
The following example imports a route map to a VRF:
(Router-config)#ip vrf v2
(config-vrf)#rd 100:2
route-target both 100:2
route-target import 100:1
ip vrf forwarding | Associates a VRF with an interface or subinterface. |
Executing this command on an interface removes the IP address. The IP address should be reconfigured.
ip vrf forwarding vrf_name
no ip vrf forwarding vrf_name
vrf_name | Name assigned to a VRF. |
The default for an interface is the global routing table.
The following example shows how to link a VRF to ATM interface 0/0:
(config)#interface atm0/0
(config-if)#ip vrf forwarding vpn1
ip vrf | Defines a VRF. |
ip route vrf | Establishes static routes for a VRF. |
neighbor {ip-address | peer-group-name} activate
no neighbor {ip-address | peer-group-name} activate
ip-address | IP address of the neighboring router. |
peer-group-name | Name of BGP peer group. |
For all other address families, address exchange is disabled by default. You can explicitly activate the default command using the appropriate address family submode.
In the following example, a BGP router activates the exchange of a customer's IP address 10.15.0.15 to a neighboring router.
router bgp 100neighbor 10.15.0.15 remote-as 100neighbor 10.15.0.15 update-source loopback0address-family vpnv4 unicastneighbor 10.15.0.15 activateexit-address-family
address-family | Enters the address family submode. |
exit-address-family | Exits the address family submode. |
To create routing and forwarding tables for a VRF, use the rd VRF submode command.
rd route-distinguisher
route-distinguisher | Adds an 8-byte value to an IPv4 prefix to create a VPN IPv4 prefix. |
There is no default. For a VRF to be functional, a route-distinguisher must be configured.
A route distinguisher (RD) creates routing and forwarding tables and specifies the default route-distinguisher for a VPN. The RD is added to the beginning of the customer's IPv4 prefixes to change them into globally unique VPN-IPv4 prefixes.
An RD is either ASN-relative, in which case it is composed of an autonomous system number and an arbitrary number, or it is IP-address-relative, in which case it is composed of an IP address and an arbitrary number.
You can enter an RD in either of these formats:
The following example configures a default RD for two VRFs. It illustrates the use of both AS-relative and IP address-relative RDs:
(config)#ip vrf v1:blue(config-vrf)#rd 100:3(config-vrf)#ip vrf v2:red(config-vrf)#rd 173.13.0.12:200
ip vrf | Enters VRF configuration mode. |
show ip vrf | Displays information about a VRF. |
route-target {import | export | both} route-target-ext-community
no route-target {import | export | both} route-target-ext-community
import | Imports routing information from the target VPN extended community. |
export | Exports routing information to the target VPN extended community. |
both | Imports both import and export routing information to the target VPN extended community. |
route-target-ext-community | |
There are not defaults. A VRF has no route-target extended community attributes associated with it until specified by the route-target command.
Execute the command one time for each target community. Learned routes that carry a specific route target extended community are imported into all VRFs configured with that extended community as an import route target. Routes learned from a VRF site (for example, by BGP, RIP, or static route configuration) contain export route targets for extended communities configured for the VRF added as route attributes to control the VRFs into which the route is imported.
The route-target specifies a target VPN extended community. Like a route-distinguisher, an extended community is composed of either an autonomous system number and an arbitrary number, or an IP address and an arbitrary number.
You can enter the numbers in either of these formats:
The following example shows how to configure route-target extended community attributes for a VRF. The result of the command sequence is that VRF v1:blue has two export extended communities (1000:1 and 1000:2) and two import extended communities (1000:1 and 173.27.0.130:200).
(config)#ip vrf v1:blue(config-vrf)#route-target both 1000:1(config-vrf)#route-target export 1000:2(config-vrf)#route-target import 173.27.0.130:200
ip vrf | Enters VRF configuration mode. |
import | Configures an import route map for the VRF. |
To display VPN address information from the BGP table, use the show ip bgp vpnv4 EXEC command.
show ip bgp vpnv4 {all | rd route-distinguisher | vrf vrf_name}
[ip-prefix/length [longer-prefixes] [output-modifiers]]
[network-address [mask] [longer-prefixes] [output-modifiers]] [cidr-only] [community]
[community-list] [dampened-paths] [filter-list] [flap-statistics] [inconsistent-as]
[neighbors] [paths [line]] [peer-group] [quote-regexp] [regexp] [summary] [tags]
all | Displays the complete VPNv4 database. |
rd route-distinguisher | Displays NLRIs that have a matching route distinguisher. |
vrf vrf_name | Displays NLRIs associated with the named VRF. |
ip-prefix/length | (Optional) IP prefix address (in dotted decimal format) and length of mask (0 to 32). |
longer-prefixes | (Optional) Displays the entry, if any, that exactly matches the specified prefix parameter, as well as all entries that match the prefix in a "longest-match" sense. That is, prefixes for which the specified prefix is an initial sub-string |
output-modifiers | (Optional) For a list of associated keywords and arguments, use context-sensitive help. |
network-address | (Optional) IP address of a network in the BGP routing table. |
mask | (Optional) Mask of the network address, in dotted decimal format. |
cidr-only | (Optional) Displays only routes that have nonnatural net masks. |
community | (Optional) Displays routes matching this community. |
community-list | (Optional) Displays routes matching this community list. |
dampened-paths | (Optional) Displays paths suppressed due to dampening (BGP route from peer is up and down). |
filter-list | (Optional) Displays routes conforming to the filter list. |
flap-statistics | (Optional) Displays flap statistics of routes. |
inconsistent-as | (Optional) Displays only routes that have inconsistent autonomous systems of origin. |
neighbors | (Optional) Displays details about TCP and BGP neighbor connections. |
paths | (Optional) Displays path information. |
line | (Optional) A regular expression to match the BGP AS paths. |
peer-group | (Optional) Displays information about peer groups. |
quote-regexp | (Optional) Displays routes matching the AS path "regular expression." |
regexp | (Optional) Displays routes matching the AS path "regular expression." |
summary | (Optional) Displays BGP neighbor status. |
tags | (Optional) Displays incoming and outgoing BGP labels for each NLRI. |
Use this command to display VPNv4 information from the BGP database. The command show ip bgp vpnv4 all displays all available VPNv4 information. The command show ip bgp vpnv4 summary displays BGP neighbor status.
The following example shows output for all available VPNv4 information in a BGP routing table:
Router#show ip bgp vpnv4 all
BGP table version is 18, local router ID is 14.14.14.14
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP,? - incomplete
Network Next Hop Metric LocPrf Weight PathRoute Distinguisher: 100:1 (v1:blue)*> 11.0.0.0 50.0.0.1 0 0 101 i*>i12.0.0.0 13.13.13.13 0 100 0 102 i*> 50.0.0.0 50.0.0.1 0 0 101 i*>i51.0.0.0 13.13.13.13 0 100 0 102 i
| Field | Description |
|---|---|
Network | Displays the network address from the BGP table. |
Next Hop | Displays the address of the BGP next hop. |
Metric | Displays the BGP metric. |
LocPrf | Displays the local preference. |
Weight | Displays the BGP weight. |
Path | Displays the BGP path per route. |
The following example shows how to display a table of labels for NLRIs that have a route-distinguisher value of 100:1.
Router#show ip bgp vpnv4 rd 100:1 tags
Network Next Hop In tag/Out tag
Route Distinguisher: 100:1 (vrf1)
2.0.0.0 10.20.0.60 34/notag
10.0.0.0 10.20.0.60 35/notag
12.0.0.0 10.20.0.60 26/notag
10.20.0.60 26/notag
13.0.0.0 10.15.0.15 notag/26
| Field | Description |
|---|---|
Network | Displays the network address from the BGP table. |
Network | Displays the network address from the BGP table. |
Next Hop | Specifies the BGP next hop address. |
In Tag | Displays the label (if any) assigned by this router. |
Out Tag | Displays the label assigned by the BGP next hop router. |
The following example shows VPNv4 routing entries for the VRF called vrf1.
Router#show ip bgp vpnv4 vrf v1
BGP table version is 18, local router ID is 14.14.14.14
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP,? - incomplete
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 100:1 (vrf1)
*> 11.0.0.0 50.0.0.1 0 0 101 i
*>i12.0.0.0 13.13.13.13 0 100 0 102 i
*> 50.0.0.0 50.0.0.1 0 0 101 i
*>i51.0.0.0 13.13.13.13 0 100 0 102 i
show ip vrf | Displays VRFs and associated interfaces. |
To display the CEF forwarding table associated with a VRF, use the show ip cef vrf EXEC command.
show ip cef vrf vrf_name [ip-prefix [mask [longer-prefixes]] [detail] [output-modifiers]]
[interface interface-number] [adjacency [interface interface-number] [detail] [discard]
[drop] [glean] [null] [punt] [output-modifiers]] [detail [output-modifiers]]
[non-recursive [detail] [output-modifiers]] [summary [output-modifiers]]
[traffic [prefix-length] [output-modifiers]] [unresolved [detail] [output-modifiers]]
vrf_name | Name assigned to the VRF. |
ip-prefix | (Optional) IP prefix of entries to show, in dotted decimal format (A.B.C.D). |
mask | (Optional) Mask of the IP prefix, in dotted decimal format. |
longer-prefixes | (Optional) Displays table entries for all of the more specific routes. |
detail | (Optional) Displays detailed information for each CEF table entry. |
output-modifiers | (Optional) For a list of associated keywords and arguments, use context-sensitive help. |
interface | (Optional) Type of network interface to use: ATM, Ethernet, Loopback, POS (packet over SONET) or Null. |
interface-number | Number identifying the network interface to use. |
adjacency | (Optional) Displays all prefixes resolving through adjacency. |
discard | Discards adjacency. |
drop | Drops adjacency. |
glean | Gleans adjacency. |
null | Null adjacency. |
punt | Punts adjacency. |
non-recursive | (Optional) Displays only nonrecursive routes. |
summary | (Optional) Displays a CEF table summary. |
traffic | (Optional) Displays traffic statistics. |
prefix-length | (Optional) Displays traffic statistics by prefix size. |
unresolved | (Optional) Displays only unresolved routes. |
Used with only the vrf_name argument, the show ip cef vrf command shows a shortened display of the CEF table. Used with the detail argument, the show ip cef vrf command shows detailed information for all CEF table entries.
This example shows the forwarding table associated with the VRF called vrf1.
Router#show ip cef vrf vrf1
Prefix Next Hop Interface
0.0.0.0/32 receive
11.0.0.0/8 50.0.0.1 Ethernet1/3
12.0.0.0/8 52.0.0.2 POS6/0
50.0.0.0/8 attached Ethernet1/3
50.0.0.0/32 receive
50.0.0.1/32 50.0.0.1 Ethernet1/3
50.0.0.2/32 receive
50.255.255.255/32 receive
51.0.0.0/8 52.0.0.2 POS6/0
224.0.0.0/24 receive
255.255.255.255/32 receive
| Field | Description |
|---|---|
Prefix | Specifies the network prefix. |
Next Hop | Specifies the BGP next hop address. |
Interface | Specifies the VRF interface. |
show ip vrf | Displays VRFs and associated interfaces. |
show ip route vrf | Displays the IP routing table associated with a VRF. |
To display the routing protocol information associated with a VRF, use the show ip protocols vrf EXEC command.
show ip protocols vrf vrf_name
vrf_name Name assigned to a VRF.
The following example shows information about a VRF called vpn1:
Router#show ip protocols vrf v2
Routing Protocol is "bgp 100" Sending updates every 60 seconds, next due in 0 sec Outgoing update filter list for all interfaces is Incoming update filter list for all interfaces is IGP synchronization is disabled Automatic route summarization is disabled Redistributing:connected, static Routing for Networks: Routing Information Sources: Gateway Distance Last Update 13.13.13.13 200 03:26:15 18.18.18.18 200 03:26:54 Distance:external 20 internal 200 local 200
| Field | Description |
|---|---|
Gateway | Displays the IP address of the router identifier for all routers in the network |
Distance | Displays the metric used to access the destination route. |
Last update | Displays the last time the routing table was updated from the source. |
show ip vrf | Displays VRFs and associated interfaces. |
To display the IP routing table associated with a VRF (VPN routing/forwarding instance), use the show ip route vrf EXEC command.
show ip route vrf vrf_name [connected] [protocol [as-number] [tag] [output-modifiers]]
[list number [output-modifiers]] [profile] [static [output-modifiers]]
[summary [output-modifiers]] [supernets-only [output-modifiers]]
[traffic-engineering [output-modifiers]]
vrf_name | Name assigned to the VPN routing/forwarding instance (VRF). |
connected | Displays all connected routes in a VRF. |
protocol | To specify a routing protocol, use one of the following keywords: bgp, egp, eigrp, hello, igrp, isis, ospf, or rip. |
as-number | Autonomous system number. |
tag | IOS routing area label. |
output-modifiers | (Optional) For a list of associated keywords and arguments, use context-sensitive help. |
list number | Specifies the IP access list to display. |
profile | Displays the IP routing table profile. |
static | Displays static routes. |
summary | Displays a summary of routes. |
supernets-only | Displays supernet entries only. |
traffic-engineering | Displays only traffic-engineered routes. |
This example shows the IP routing table associated with the VRF called v1:
Router#show ip route vrf v1
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route, o - ODR
T - traffic engineered route
Gateway of last resort is not set
B 51.0.0.0/8 [200/0] via 13.13.13.13, 00:24:19
C 50.0.0.0/8 is directly connected, Ethernet1/3
B 11.0.0.0/8 [20/0] via 50.0.0.1, 02:10:22
B 12.0.0.0/8 [200/0] via 13.13.13.13, 00:24:20
This example shows BGP entries in the IP routing table associated with the VRF called v1:
Router#show ip route vrf v1 bgp
B 51.0.0.0/8 [200/0] via 13.13.13.13, 03:44:14 B 11.0.0.0/8 [20/0] via 51.0.0.1, 03:44:12 B 12.0.0.0/8 [200/0] via 13.13.13.13, 03:43:14
show ip vrf | Displays VRFs and associated interfaces. |
show ip cef vrf | Displays the CEF forwarding table associated with a VRF. |
To display the set of defined VRFs (VPN routing/forwarding instances) and associated interfaces, use the show ip vrf EXEC command.
show ip vrf [{brief | detail | interfaces}] [vrf_name] [output-modifiers]
brief | .(Optional) Displays concise information on the VRF(s) and associated interfaces. |
detail | (Optional) Displays detailed information on the VRF(s) and associated interfaces. |
interfaces | (Optional) Displays detailed information about all interfaces bound to a particular VRF, or any VRF. |
vrf_name | Name assigned to the VPN routing/forwarding instance (VRF). |
output-modifiers | (Optional) For a list of associated keywords and arguments, use context-sensitive help. |
When no optional parameters are specified, the command shows concise information about all configured VRFs.
Use this command to display information about VRFs. Two levels of detail are available: use the brief keyword or no keyword to display concise information, or use the detail keyword to display all information. To display information about all interfaces bound to a particular VRF, or to any VRF, use the interfaces keyword.
This example shows brief information for the VRFs currently configured:
Router#show ip vrf
Name Default RD Interfaces vrf1 100:1 Ethernet1/3 vrf2 100:2 Ethernet0/3
| Field | Description |
|---|---|
Name | Specifies the VRF name. |
Default RD | Specifies the default route distinguisher. |
Interfaces | Specifies the network interfaces. |
This example shows detailed information for the VRF called v1:
Router#show ip vrf detail v1
VRF vrf1; default RD 100:1 Interfaces: Ethernet1/3 Connected addresses are in global routing table Export VPN route-target communities RT:100:1 Import VPN route-target communities RT:100:1 No import route-map
| Field | Description |
|---|---|
Interfaces | Specifies the network interfaces. |
Export | Specifies VPN route-target export communities. |
Import | .Specifies VPN route-target import communities. |
This example shows the interfaces bound to a particular VRF:
router#show ip vrf interfaces
Interface IP-Address VRF Protocol Ethernet2 130.22.0.33 blue_vrf up Ethernet4 130.77.0.33 hub up router#
| Field | Description |
|---|---|
Interface | Specifies the network interfaces for a VRF. |
IP-Address | Specifies the IP address of a VRF interface. |
VRF | Specifies the VRF name. |
Protocol | Displays the state of the protocol (up/down) for each VRF interface. |
ip vrf | Enters VRF configuration mode. |
rd | Configures a default route distinguisher (RD) for a VRF. |
route-target | Configures import and export extended community attributes for the VRF. |
import | Configures an import route map for a VRF. |
ip vrf forwarding | Associates a VRF with an interface or subinterface. |
To display label forwarding entries associated with a particular VRF or IP prefix, use the show tag-switching forwarding vrf EXEC command. To disable the display of label forwarding information, use the no form of this command.
show tag-switching forwarding vrf vrf_name [ip-prefix/length [mask]] [detail] [output-modifiers]
no show tag-switching forwarding vrf vrf_name [ip-prefix/length [mask]] [detail] [output-modifiers]
vrf_name | Displays NLRIs associated with the named VRF. |
ip-prefix/length | (Optional) IP prefix address (in dotted decimal format) and length of mask (0 to 32). |
mask | (Optional) Destination network mask, in dotted decimal format. |
detail | (Optional) Displays detailed information on the VRF routes. |
output-modifiers | (Optional) For a list of associated keywords and arguments, use context-sensitive help. |
The following example shows label forwarding entries that correspond to the VRF called v2:
Router#show tag-switching forwarding vrf v2 detail
show tag-switching forwarding | Displays label forwarding information. |
show ip cef vrf | Displays the CEF forwarding table associated with a VRF. |
debug ip bgp [A.B.C.D. | dampening | events | in | keepalives | out | updates | vpnv4]
no debug ip bgp [A.B.C.D. | dampening | events | in | keepalives | out | updates | vpnv4]
A.B.C.D. | (Optional) Displays the BGP neighbor IP address. |
dampening | (Optional) Displays BGP dampening. |
events | (Optional) Displays BGP events. |
in | (Optional) BGP inbound information. |
keepalives | (Optional) Displays BGP keepalives. |
out | (Optional) Displays BGP outbound information. |
updates | (Optional) Displays BGP updates. |
vpnv4 | (Optional) Displays VPNv4 NLRI information. |
The following example displays the output from this command:
Router#debug ip bgp vpnv4
03:47:14:vpn:bgp_vpnv4_bnetinit:100:2:58.0.0.0/8
03:47:14:vpn:bnettable add:100:2:58.0.0.0 / 8
03:47:14:vpn:bestpath_hook route_tag_change for v2:58.0.0.0/255.0.0.0(ok)
03:47:14:vpn:bgp_vpnv4_bnetinit:100:2:57.0.0.0/8
Posted: Fri Apr 21 11:03:51 PDT 2000
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