JUNOSe 9.1.x BGP and MPLS Configuration Guide > Monitoring L2VPNs > Monitoring BGP-Related Settings for L2VPNs

Monitoring BGP-Related Settings for L2VPNs

This section provides examples of some of the show ip bgp commands that you can use to monitor L2VPN configurations.

You can use the show ip bgp commands listed in Table 73 to display BGP-related settings for L2VPN (VPWS) instances in the L2VPN address family.

Table 73: Commands for Monitoring BGP Settings for the L2VPN Address Family 

show ip bgp advertised-routes	show ip bgp neighbors received-routes
show ip bgp l2vpn all	show ip bgp neighbors routes
show ip bgp neighbors	show ip bgp peer-group
show ip bgp neighbors dampened-routes

You can use the show ip bgp commands listed in Table 74 to display BGP-related settings for L2VPN (VPWS) instances in the VPWS address family.

Table 74: Commands for Monitoring BGP Settings for the VPWS Address Family 

show ip bgp	show ip bgp l2vpn vpws
show ip bgp community	show ip bgp next-hops
show ip bgp community-list	show ip bgp paths
show ip bgp dampened-paths	show ip bgp quote-regexp
show ip bgp filter-list	show ip bgp regexp
show ip bgp flap-statistics	show ip bgp summary

For more information about using the show ip bgp commands that are not described in this section, see Chapter 1, Configuring BGP Routing and Chapter 3, Configuring BGP-MPLS Applications.

Purpose

Display layer 2 NLRI for L2VPN (VPWS) instances. The l2vpn vpws keywords display layer 2 NLRI for a particular L2VPN (VPWS) instance in the VPWS address family.

The l2vpn all keywords display layer 2 NLRI for all L2VPN (VPWS) instances in the L2VPN address family. The output for this version of the command also includes information about any VPLS instances configured in the L2VPN address family.

The site-id and block-offset keywords display layer 2 NLRI for the route that matches a specified prefix (site ID and block offset) in the L2VPN address family or in the VPWS address family.

Action

To display information for a particular L2VPN instance in the L2VPN address family:

host1:pe1#show ip bgp l2vpn vpws l2vpn1

Local BGP identifier 10.1.1.1, local AS 100

  2 routes (152 bytes)

  2 destinations (152 bytes) of which 2 have a route

  2 routes selected for route tables installation

  0 unicast/multicast routes selected for route table installation

  0 unicast/multicast tunnel-usable routes selected for route table installation

  0 tunnel-only routes selected for tunnel-route table installation

  4 path attribute entries (608 bytes)

  Local-RIB version 6. FIB version 6.

Status codes: > best, * invalid, s suppressed, d dampened, r rejected,

              a auto-summarized

  Prefix      Peer            Next-hop         MED LocPrf Weight Origin

> 1:1         0.0.0.0         self                           0    IGP    

> 2:1         12.2.2.2        12.2.2.2              100      0    IGP    

To display summary information for a particular L2VPN instance in the VPWS address family; only the BGP operational state is useful:

host1:pe1#show ip bgp l2vpn vpws l2vpn1 summary

Local router ID 10.1.1.1, local AS 100

  Administrative state is Start

  BGP Operational state is Up

  Shutdown in overload state is disabled

  Default local preference is 100

  Default originate is disabled

  Always compare MED is disabled

  Compare MED within confederation is disabled

  Advertise inactive routes is disabled

  Advertise best external route to internal peers is disabled

  Enforce first AS is disabled

  Missing MED as worst is disabled

  Route flap dampening is disabled

  Log neighbor changes is disabled

  Fast External Fallover is disabled

  No maximum received AS-path length

  BGP administrative distances are 20 (ext), 200 (int), and 200 (local)

  Client-to-client reflection is enabled

  Cluster ID is not configured (local router ID used)

  Route-target filter is enabled

  Default IPv4-unicast is enabled

  Redistribution of iBGP routes is disabled

  Graceful restart is globally disabled

  Global graceful-restart restart time is 120 seconds

  Global graceful-restart stale paths time is 360 seconds

  Graceful-restart path selection defer time is 360 seconds

  Graceful-restart is not ready to switch to the standby SRP

  The last restart was not graceful

  Local-RIB version 6. FIB version 6.

  (No neighbors are configured)

To display information for the route that matches the specified prefix (2:1) for an L2VPN instance named customer1 in the VPWS address family:

host1#show ip bgp l2vpn vpws customer1 site-id 2 block-offset 1

BGP route information for prefix 2:1

  Received route learned from internal peer 10.2.2.2 (best route)

    Leaked route

    Route placed in IP forwarding table

    Best to advertise to external peers

    Address Family Identifier (AFI) is layer2

    Subsequent Address Family Identifier (SAFI) is unicast

    Route Distinguisher (RD) is 100:11

    Original Route Distinguisher (RD) is 100:21

    MPLS in-label is none

    MPLS in-label block size is 0

    MPLS out-label is 46

    MPLS out-label block size is 20

    Next hop IP address is 2.2.2.2 (metric 3)

    Multi-exit discriminator is not present

    Local preference is 100

    Weight is 0

    Origin is IGP

    AS path is empty

    Extended communities RT:100:1 Layer 2:19:00:0

Meaning    

Table 75 lists the show ip bgp l2vpn command output fields

Table 75: show ip bgp l2vpn Output Fields 

Field Name	Field Description
Local BGP identifier	IP address of the local PE router
local AS	Autonomous system number
Local-RIB version	Version number of the local routing information base
FIB version	Version number of the forwarding information base
Status codes	Status codes for the route
Prefix	Route prefix in the format siteID:blockOffset
Peer	IP address of the peer from which the route was learned
Next-hop (or Next hop IP address)	IP address of the next router that is used when a packet is forwarded to the destination network
MED	Multiexit discriminator for the route
LocPrf	Local preference for the route
Weight	Weight of the route
Origin	Origin of the route
BGP Operational state	Operational state, up or down

Related Topics

• show ip bgp command
• show ip bgp advertised-routes command
• show ip bgp community command
• show ip bgp community-list command
• show ip bgp dampened-paths command
• show ip bgp filter-list command
• show ip bgp flap-statistics command
• show ip bgp neighbors command
• show ip bgp neighbors dampened-routes command
• show ip bgp neighbors received-routes command
• show ip bgp neighbors routes command
• show ip bgp next-hops command
• show ip bgp paths command
• show ip bgp peer-group command
• show ip bgp quote-regexp command
• show ip bgp regexp command
• show ip bgp summary command