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Cisco ME 3800x and ME 3600x Switches Software Configuration Guide, Cisco IOS Release 15.4(2)S

Bias-Free Language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

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Book Title

Cisco ME 3800x and ME 3600x Switches Software Configuration Guide, Cisco IOS Release 15.4(2)S

Chapter Title

Multiprotocol Label Switching Load Balancing

Results

Updated:
April 7, 2021

Chapter: Multiprotocol Label Switching Load Balancing

Multiprotocol Label Switching Load Balancing

First Published: July 2013

 

The Cisco ME 3800 and ME 3600 switches support IPv4 and IPv6 load balancing at the LER and LSR. Effective with Cisco IOS Release 15.3(3)S, the following features are supported:

  • Layer 2 VPN load balancing at LER and LSR
  • Layer 3 VPN load balancing at LER and LSR
  • Load balancing over port channel at LER and LSR

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information for MPLS Load Balancing.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Contents

Prerequisites for MPLS Load Balancing

  • MPLS should be enabled on the Cisco ME3600/ME3800 switches.
  • For MPLS load balancing over port channel, the port channel should be configured and MPLS should be enabled on the port channel interface.

Restrictions for MPLS Load Balancing

  • The show mpls forwarding-table counters command does not display the switched packets for all interfaces. It displays the number of packets only for that label. To view switched packets on each interface, use the show interface interface-name counter command.
  • Only four load balancing paths are supported.

Layer 2 VPN Load Balancing

  • To get an evenly-distributed load balancing experience over virtual circuits (VC), it is recommended to have more number of VCs.

Layer 3 VPN Load Balancing

  • Load balancing is supported only on homogeneous paths, that is, all MPLS adjacencies or all IP adjacencies.

Label Limits

  • A label limit exists and it is 22000 for the ME3600 switches. The label limit is higher for the ME3800 switches (up to 80000 dependent on IOS version).
  • The labels are not released for re-use (holddown timer) for 5 minutes after they are cleared. So, interface flaps in quick succession can render a device out of labels.

For example, if you use BGP and have 7000 labels in use, four concurrent flaps within a 5-minute period can render the device out of labels and trigger the following syslog message:

%LSD-4-LABEL_RESOURCE: label range 16-21999 exhausted.

Information About MPLS Load Balancing

Load balancing is a technique to distribute traffic evenly across various links to obtain optimal resource utilization.

MPLS load balancing occurs at the LER and LSR.

How to Configure MPLS Load Balancing

note.gif

Noteblank.gif Ensure that MPLS is configured.

note.gif

Noteblank.gif No other specific command needs to be enabled for MPLS Load Balancing to work.

Step 1blank.gif Understand MPLS VPN. For more information, see the "Understanding MPLS VPNs" section in the Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS document.

Step 2blank.gif Configure MPLS VPN. For more information, see the "Configuring MPLS VPNs" section in the Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS document.

Step 3blank.gif Enable MPLS. For more information, see the "Enabling MPLS" section in the Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS document.

Step 4blank.gif Define VPN. For more information, see the "Defining VPNs" section in the Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS document.

Step 5blank.gif Configure BGP Routing Sessions. For more information, see the "Configuring BGP Routing Sessions" section in the Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS document.

Step 6blank.gif Configure the Provider-Edge-to-Provider-Edge Routing Sessions. For more information, see the "Configuring the Provider-Edge-to-Provider-Edge Routing Sessions" section in the Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS document.

Where to Go Next?

Configure MPLS Load Balancing. For more information, see Configuration Examples for MPLS Load Balancing.

Configuration Examples for MPLS Load Balancing

Consider the following topology:

Figure 55-1 Topology for MPLS Load Balancing

360964.jpg

where,

  • CE—customer edge router that is located at the customer premises. The CE provides an Ethernet interface between the customer's LAN and the provider's core network.
  • PE—provider edge router is a router that is located at the edge of a service provider’s network. A PE router is any component capable of a broad range of routing protocol, such as:

–blank.gif Border Gateway Protocol (BGP)

–blank.gif Open Shortest Path First (OSPF)

–blank.gif Multi-Protocol Label Switching (MPLS)

  • P—provider router located in the core of the service provider’s network.

Layer 2 VPN Configuration Example

This example depicts configuration for 129 virtual circuits. See Figure 55-1 for the following configuration:

At PE1:

interface loopback0
no shut
ip address 1.1.1.1 255.255.255.255
 
mpls ip
mpls label protocol ldp
mpls ldp advertise-labels
interface gig0/4
no switchport
no shut
no keepalive
ip address 5.5.5.1 255.255.0.0
mpls ip
mpls label protocol ldp
mpls ldp advertise-labels
 
router ospf 10
network 5.5.5.1 0.0.0.0 area 0
network 1.1.1.1 0.0.0.0 area 0
 
  • Configure the service instance from 2 to 129
note.gif

Noteblank.gif There are multiple MPLS links in the core. The packets are load balanced across the core links based on the L2VPN labels.

interface g0/1
no shut
switchport
switchport trunk allowed vlan none
switchport mode trunk
service instance 2 ethernet
encapsulation dot1q 2
rewrite ingress tag pop 1 symmetric
xconnect 2.2.2.2 2 encapsulation mpls
!
!
service instance 129 ethernet
encapsulation dot1q 129
rewrite ingress tag pop 1 symmetric
xconnect 2.2.2.2 129 encapsulation mpls
 

At P1:

interface loopback0
no shut
ip address 4.4.4.4 255.255.255.255
 
mpls ip
mpls label protocol ldp
mpls ldp advertise-labels
interface g0/4
no switchport
no shut
no keepalive
ip address 5.5.5.2 255.255.0.0
mpls ip
mpls label protocol ldp
mpls ldp advertise-labels
 
interface port-channel1
no switchport
no keepalive
ip address 90.0.0.1 255.255.0.0
mpls ip
mpls label protocol ldp
 
 
router ospf 10
network 4.4.4.4 0.0.0.0 area 0
network 90.0.0.1 0.0.0.0 area 0
network 5.5.5.2 0.0.0.0 area 0
 
 
interface gig0/8
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/9
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/13
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/14
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 

At P2:

interface loopback0
no shut
ip address 3.3.3.3 255.255.255.255
 
interface port-channel1
no switchport
no keepalive
ip address 90.0.0.2 255.255.0.0
mpls ip
mpls label protocol ldp
 
interface port-channel2
no switchport
no keepalive
ip address 100.0.0.2 255.255.0.0
mpls ip
mpls label protocol ldp
 
router ospf 10
network 90.0.0.2 0.0.0.0 area 0
network 100.0.0.2 0.0.0.0 area 0
network 3.3.3.3 0.0.0.0 area 0
 
interface gig0/8
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
interface gig0/9
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
interface gig0/13
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
interface gig0/14
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
interface gig0/4
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/5
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/11
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/15
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 

At PE2:

 
interface loopback0
no shut
ip address 2.2.2.2 255.255.255.255
 
 
interface port-channel2
no switchport
no keepalive
ip address 100.0.0.1 255.255.0.0
mpls ip
mpls label protocol ldp
 
router ospf 10
network 100.0.0.1 0.0.0.0 area 0
network 2.2.2.2 0.0.0.0 area 0
 
interface gig0/4
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/5
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/11
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/15
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
  • Configure the service instance from 2 to 129
interface gig0/24
no shut
switchport
switchport trunk allowed vlan none
switchport mode trunk
service instance 2 ethernet
encapsulation dot1q 2
rewrite ingress tag pop 1 symmetric
xconnect 1.1.1.1 2 encapsulation mpls
!
!
service instance 129 ethernet
encapsulation dot1q 129
rewrite ingress tag pop 1 symmetric
xconnect 1.1.1.1 129 encapsulation mpls
 

This configuration enables load balancing in g0/4, g0/5, g0/11, g0/15 in P2 and PE2.

Layer 3 VPN Configuration Example

This example depicts configuration for 129 VPN Routing and Forwarding (VRF) instances. See Figure 55-1 for this configuration:

At PE1:

ip routing
ip cef
interface loopback0
no shut
ip address 1.1.1.1 255.255.255.255
 
  • Configure EFP from 2 to 129
interface g0/1
no shut
switchport
switchport trunk allowed vlan none
switchport mode trunk
service instance 2 ethernet
encapsulation dot1q 2
rewrite ingress tag pop 1 symmetric
bridge-domain 2
!
service instance 129 ethernet
encapsulation dot1q 129
rewrite ingress tag pop 1 symmetric
bridge-domain 129
 
  • Configure VRF from 2 to 129
ip vrf vrf2
rd 2:2
route-target export 2:2
route-target import 2:2
 
!
 
ip vrf vrf129
rd 129:129
route-target export 129:129
route-target import 129:129
 
  • Add address-family from 2 to 129
router bgp 10
bgp router-id 1.1.1.1
bgp log-neighbor-changes
bgp deterministic-med
no bgp default ipv4-unicast
neighbor 2.2.2.2 remote-as 10
neighbor 2.2.2.2 update-source Loopback0
!
address-family ipv4
redistribute connected
exit-address-family
!
address-family vpnv4
neighbor 2.2.2.2 activate
neighbor 2.2.2.2 s-community both
exit-address-family
!
address-family ipv4 vrf vrf2
redistribute connected
exit-address-family
!
address-family ipv4 vrf vrf3
redistribute connected
exit-address-family
!
address-family ipv4 vrf vrf129
redistribute connected
exit-address-family
!
 
  • Configure VLAN from 2 to 129
interface Vlan2
ip vrf forwarding vrf2
ip address 172.16.0.1 255.255.255.240
!
interface Vlan3
ip vrf forwarding vrf3
ip address 172.16.0.17 255.255.255.240
!
interface Vlan129
ip vrf forwarding vrf129
ip address 172.16.7.241 255.255.255.240
 

At P1:

ip routing
ip cef
interface loopback0
no shut
ip address 4.4.4.4 255.255.255.255
 
interface port-channel1
no switchport
no keepalive
ip address 90.0.0.1 255.255.0.0
mpls ip
mpls label protocol ldp
 
 
interface gig0/8
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/9
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/13
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/14
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 

At P2:

ip routing
ip cef
interface loopback0
no shut
ip address 3.3.3.3 255.255.255.255
 
interface port-channel1
no switchport
no keepalive
ip address 90.0.0.2 255.255.0.0
mpls ip
mpls label protocol ldp
 
interface port-channel2
no switchport
no keepalive
ip address 100.0.0.2 255.255.0.0
mpls ip
mpls label protocol ldp
 
interface gig0/8
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
interface gig0/9
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
interface gig0/13
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
interface gig0/14
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
interface gig0/4
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/5
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/11
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/15
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 

At PE2:

ip routing
ip cef
interface loopback0
no shut
ip address 2.2.2.2 255.255.255.255
 
  • Configure EFP from 2 to 129
interface gig0/24
no shut
switchport
switchport trunk allowed vlan none
switchport mode trunk
service instance 2 ethernet
encapsulation dot1q 2
rewrite ingress tag pop 1 symmetric
bridge-domain 2
!
service instance 129 ethernet
encapsulation dot1q 129
rewrite ingress tag pop 1 symmetric
bridge-domain 129
 
  • Configure VRF from 2 to 129
ip vrf vrf2
rd 2:2
route-target export 2:2
route-target import 2:2
 
!
 
ip vrf vrf129
rd 129:129
route-target export 129:129
route-target import 129:129
 
  • Configure vlan from 2 to 129
interface Vlan2
ip vrf forwarding vrf2
ip address 172.26.0.1 255.255.255.240
!
interface Vlan3
ip vrf forwarding vrf3
ip address 172.26.0.17 255.255.255.240
!
interface Vlan129
ip vrf forwarding vrf129
ip address 172.26.7.241 255.255.255.240
 
  • Add address family 2 to 129
router bgp 10
bgp router-id 2.2.2.2
bgp log-neighbor-changes
bgp deterministic-med
no bgp default ipv4-unicast
neighbor 1.1.1.1 remote-as 10
neighbor 1.1.1.1 update-source Loopback0
!
address-family ipv4
redistribute connected
exit-address-family
!
address-family vpnv4
neighbor 1.1.1.1 activate
neighbor 1.1.1.1 s-community both
exit-address-family
!
address-family ipv4 vrf vrf2
redistribute connected
exit-address-family
!
address-family ipv4 vrf vrf3
redistribute connected
exit-address-family
!
address-family ipv4 vrf vrf129
redistribute connected
exit-address-family
!
 
interface port-channel2
no switchport
no keepalive
ip address 100.0.0.1 255.255.0.0
mpls ip
mpls label protocol ldp
 
interface gig0/4
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/5
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/11
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
interface gig0/15
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 

This configuration enables load balancing on g0/4, g0/5, g0/11, g0/15 in P2 and PE2.

Load Balancing Over Port Channel: Configuration Example

To configure load balancing over port channel, use the following command:

port-channel load-balance [ dst-ip destination-ip-address | dst-mac destination-mac-address | src-dst-ip source-XOR-destination-ip-address | src-dst-mac source-XOR-destination-mac-address | src-ip source-ip-address | src-mac source-mac-address ]

Table 55-1 Syntax Description of the port-channel load balance command

Syntax
Description

dst-ip destination-ip-address

Loads distribution on the destination IP address. Option to exclude VLAN in the distribution is provided using the excludevlan keyword along with this method.

dst-mac destination-mac-address

Loads distribution on the destination MAC address.

src-dst-ip source-XOR-destination-ip-address

Loads distribution on the source transfer or XOR-destination IP address. Option to exclude VLAN in the distribution is provided using the excludevlan keyword along with this method.

src-dst-mac source-XOR-destination-mac-address

Loads distribution on the source XOR-destination MAC address.

src-ip source-ip-address

Loads distribution on the source IP address. Option to exclude VLAN in the distribution is provided using the excludevlan keyword along with this method.

src-mac source-mac-address

Loads distribution on the source MAC address.
note.gif

Noteblank.gif Refer to Figure 55-1 for this configuration.

At PE1:

interface loopback0
no shut
ip address 1.1.1.1 255.255.255.255
 
mpls ip
mpls label protocol ldp
mpls ldp advertise-labels
interface gig0/4
no switchport
no shut
no keepalive
ip address 5.5.5.1 255.255.0.0
mpls ip
mpls label protocol ldp
mpls ldp advertise-labels
 
router ospf 10
network 5.5.5.1 0.0.0.0 area 0
network 1.1.1.1 0.0.0.0 area 0
 
  • Configure the service instance from 2 to 129
interface g0/1
no shut
switchport
switchport trunk allowed vlan none
switchport mode trunk
service instance 2 ethernet
encapsulation dot1q 2
rewrite ingress tag pop 1 symmetric
xconnect 2.2.2.2 2 encapsulation mpls
!
!
service instance 129 ethernet
encapsulation dot1q 129
rewrite ingress tag pop 1 symmetric
xconnect 2.2.2.2 129 encapsulation mpls

At P1:

interface loopback0
no shut
ip address 4.4.4.4 255.255.255.255
 
mpls ip
mpls label protocol ldp
mpls ldp advertise-labels
interface g0/4
no switchport
no shut
no keepalive
ip address 5.5.5.2 255.255.0.0
mpls ip
mpls label protocol ldp
mpls ldp advertise-labels
 
 
 
interface port-channel1
no switchport
no keepalive
ip address 90.0.0.1 255.255.0.0
mpls ip
mpls label protocol ldp
 
 
router ospf 10
network 4.4.4.4 0.0.0.0 area 0
network 90.0.0.1 0.0.0.0 area 0
network 5.5.5.2 0.0.0.0 area 0
 
 
interface gig0/8
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/9
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/13
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/14
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 

At P2

interface loopback0
no shut
ip address 3.3.3.3 255.255.255.255
 
interface port-channel1
no switchport
no keepalive
ip address 90.0.0.2 255.255.0.0
mpls ip
mpls label protocol ldp
 
interface port-channel2
no switchport
no keepalive
ip address 100.0.0.2 255.255.0.0
mpls ip
mpls label protocol ldp
 
router ospf 10
network 90.0.0.2 0.0.0.0 area 0
network 100.0.0.2 0.0.0.0 area 0
network 3.3.3.3 0.0.0.0 area 0
 
 
interface gig0/8
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/9
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/13
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/14
no switchport
no shut
no keepalive
no ip address
channel-group 1 mode active
 
 
interface gig0/4
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
 
interface gig0/5
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
 
interface gig0/11
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
 
interface gig0/15
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 

At PE2:

interface loopback0
no shut
ip address 2.2.2.2 255.255.255.255
 
 
interface port-channel2
no switchport
no keepalive
ip address 100.0.0.1 255.255.0.0
mpls ip
mpls label protocol ldp
 
 
router ospf 10
network 100.0.0.1 0.0.0.0 area 0
network 2.2.2.2 0.0.0.0 area 0
 
 
 
interface gig0/4
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
 
interface gig0/5
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
 
interface gig0/11
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
 
interface gig0/15
no switchport
no shut
no keepalive
no ip address
channel-group 2 mode active
 
  • Configure the service instance from 2 to 129
interface gig0/24
no shut
switchport
switchport trunk allowed vlan none
switchport mode trunk
service instance 2 ethernet
encapsulation dot1q 2
rewrite ingress tag pop 1 symmetric
xconnect 1.1.1.1 2 encapsulation mpls
!
!
service instance 129 ethernet
encapsulation dot1q 129
rewrite ingress tag pop 1 symmetric
xconnect 1.1.1.1 129 encapsulation mpls
 

Load balancing should be enabled at g0/4, g0/5, g0/11, an dg0/15 in P2 and PE2.

Verifying the MPLS Load Balancing Configuration

The output of the following commands provides details of the MPLS load balancing configuration:

Switch# show l2vpn bridge-domain detail
List of Access PWs:
List of VFIs:
VFI 1
PW: neighbor 3.3.3.3, PW ID 200, state is up ( established)
PW class not set, XC ID 0xc0000001
Encapsulation MPLS, protocol LDP
PW type Ethernet, control word disabled, interworking none
MPLS Local Remote
------------ ------------------------------ -------------------------
Label 16000 16001
Group ID 0x0 0x1
Interface 1 1
MTU 1500 1500
Control word disabled disabled
PW type Ethernet Ethernet
VCCV CV type 0x2 0x2
VCCV CC type 0x6 0x6
------------ ------------------------------ -------------------------
 
  • Enabling load balance hashing:
Switch# show l2vpn xconnect detail
 
PW: neighbor 3.3.3.3, PW ID 300, state is down ( provisioned)
PW class not set, XC ID 0x40008
Encapsulation MPLS, protocol LDP
PW type Ethernet, control word disabled, interworking none
MPLS Local Remote
------------ ------------------------------ -----------------------------
Label 16001 unknown
Group ID 0x200 0x0
Interface GigabitEthernet0/0/0/6 unknown
MTU 1500 unknown
Control word disabled unknown
PW type Ethernet unknown
VCCV CV type 0x2 0x0
VCCV CC type 0x6 0x0
(none)
------------ ------------------------------ -----------------------------
 
  • The following are sample outputs for the MPLS load balancing:
Switch# show ip route 10.255.17.42
 
Routing entry for 10.255.17.42/32
Known via "ospf 1", distance 110, metric 101, type intra area
Last update from 192.168.207.170 on GigabitEthernet0/11, 1w3d ago
Routing Descriptor Blocks:
192.168.207.182, from 10.255.17.42, 1w3d ago, via GigabitEthernet0/14
Route metric is 101, traffic share count is 1
192.168.207.178, from 10.255.17.42, 1w3d ago, via GigabitEthernet0/13
Route metric is 101, traffic share count is 1
* 192.168.207.174, from 10.255.17.42, 1w3d ago, via GigabitEthernet0/12
Route metric is 101, traffic share count is 1
192.168.207.170, from 10.255.17.42, 1w3d ago, via GigabitEthernet0/11
Route metric is 101, traffic share count is 1
 
Switch# show ip cef 10.255.17.42
 
10.255.17.42/32
nexthop 192.168.207.170 GigabitEthernet0/11
nexthop 192.168.207.174 GigabitEthernet0/12
nexthop 192.168.207.178 GigabitEthernet0/13
nexthop 192.168.207.182 GigabitEthernet0/14
 
Switch# show ip cef 10.255.17.42 internal
 
10.255.17.42/32, epoch 0, RIB[I], refcount 5, per-destination sharing
sources: RIB
feature space:
LFD: 10.255.17.42/32 1 local label
local label info: global/243
contains path extension list
disposition chain 0x08E9B0B4
label switch chain 0x08E9B2D8
IPRM: 0x00038000
ifnums:
GigabitEthernet0/11(64): 192.168.207.170
GigabitEthernet0/12(65): 192.168.207.174
GigabitEthernet0/13(66): 192.168.207.178
GigabitEthernet0/14(67): 192.168.207.182
path 08EB8068, path list 08EAF274, share 1/1, type attached nexthop, for IPv4
MPLS short path extensions: MOI flags = 0x0 label implicit-null
nexthop 192.168.207.170 GigabitEthernet0/11, adjacency IP adj out of GigabitEthernet0/11, addr 192.168.207.170 0950B0E0
path 08EB80DC, path list 08EAF274, share 1/1, type attached nexthop, for IPv4
MPLS short path extensions: MOI flags = 0x0 label implicit-null
nexthop 192.168.207.174 GigabitEthernet0/12, adjacency IP adj out of GigabitEthernet0/12, addr 192.168.207.174 0950B540
path 08EB9EC4, path list 08EAF274, share 1/1, type attached nexthop, for IPv4
MPLS short path extensions: MOI flags = 0x0 label implicit-null
nexthop 192.168.207.178 GigabitEthernet0/13, adjacency IP adj out of GigabitEthernet0/13, addr 192.168.207.178 0950AC80
path 08EB912C, path list 08EAF274, share 0/1, type attached nexthop, for IPv4
MPLS short path extensions: MOI flags = 0x0 label implicit-null
nexthop 192.168.207.182 GigabitEthernet0/14, adjacency IP adj out of GigabitEthernet0/14, addr 192.168.207.182 0950A3C0
output chain:
loadinfo 08E9AE90, per-session, 4 choices, flags 0003, 5 locks
flags: Per-session, for-rx-IPv4
16 hash buckets
< 0 > IP adj out of GigabitEthernet0/11, addr 192.168.207.170 0950B0E0
< 1 > IP adj out of GigabitEthernet0/12, addr 192.168.207.174 0950B540
< 2 > IP adj out of GigabitEthernet0/13, addr 192.168.207.178 0950AC80
< 3 > IP adj out of GigabitEthernet0/14, addr 192.168.207.182 0950A3C0
< 4 > IP adj out of GigabitEthernet0/11, addr 192.168.207.170 0950B0E0
< 5 > IP adj out of GigabitEthernet0/12, addr 192.168.207.174 0950B540
< 6 > IP adj out of GigabitEthernet0/13, addr 192.168.207.178 0950AC80
< 7 > IP adj out of GigabitEthernet0/14, addr 192.168.207.182 0950A3C0
< 8 > IP adj out of GigabitEthernet0/11, addr 192.168.207.170 0950B0E0
< 9 > IP adj out of GigabitEthernet0/12, addr 192.168.207.174 0950B540
<10 > IP adj out of GigabitEthernet0/13, addr 192.168.207.178 0950AC80
<11 > IP adj out of GigabitEthernet0/14, addr 192.168.207.182 0950A3C0
<12 > IP adj out of GigabitEthernet0/11, addr 192.168.207.170 0950B0E0
<13 > IP adj out of GigabitEthernet0/12, addr 192.168.207.174 0950B540
<14 > IP adj out of GigabitEthernet0/13, addr 192.168.207.178 0950AC80
<15 > IP adj out of GigabitEthernet0/14, addr 192.168.207.182 0950A3C0
Subblocks:
None
 
Switch# show mpls forwarding-table 10.255.17.42
 
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or VC or Tunnel Id Switched interface
243 Pop Label 10.255.17.42/32 252677583293010 Gi0/11 192.168.207.170
Pop Label 10.255.17.42/32 0 Gi0/12 192.168.207.174
Pop Label 10.255.17.42/32 0 Gi0/13 192.168.207.178
Pop Label 10.255.17.42/32 0 Gi0/14 192.168.207.182
 
note.gif

Noteblank.gif The show mpls forwarding-table counters command does not display the switched packets for all interfaces. To view switched packets on each interface, use the show interface interface-name counter command.

Switch# show mpls ldp neighbor
 
Peer LDP Ident: 10.255.17.42:0; Local LDP Ident 10.255.17.32:0
TCP connection: 10.255.17.42.18853 - 10.255.17.32.646
State: Oper; Msgs sent/rcvd: 186413/186396; Downstream
Up time: 15w6d
LDP discovery sources:
GigabitEthernet0/12, Src IP addr: 192.168.207.174
GigabitEthernet0/11, Src IP addr: 192.168.207.170
GigabitEthernet0/13, Src IP addr: 192.168.207.178
GigabitEthernet0/14, Src IP addr: 192.168.207.182
Addresses bound to peer LDP Ident:
10.255.17.42 192.168.207.174 192.168.207.170 192.168.207.178
192.168.207.182
Peer LDP Ident: 10.255.10.3:0; Local LDP Ident 10.255.17.32:0
TCP connection: 10.255.10.3.646 - 10.255.17.32.11542
State: Oper; Msgs sent/rcvd: 18328/18297; Downstream
Up time: 1w3d
LDP discovery sources:
Targeted Hello 10.255.17.32 -> 10.255.10.3, active, passive
Addresses bound to peer LDP Ident:
10.255.10.3 172.31.10.3 192.168.190.61 192.168.190.57
10.11.11.1 10.255.4.1 192.168.190.65 192.168.190.70
Peer LDP Ident: 10.255.10.97:0; Local LDP Ident 10.255.17.32:0
TCP connection: 10.255.10.97.646 - 10.255.17.32.16411
State: Oper; Msgs sent/rcvd: 18318/18329; Downstream
Up time: 1w3d
LDP discovery sources:
GigabitEthernet0/22, Src IP addr: 192.168.207.130
Addresses bound to peer LDP Ident:
10.255.10.97 172.31.10.97 192.168.191.149 192.168.191.193
192.168.191.205 192.168.191.157 192.168.191.209 192.168.191.201
192.168.191.213 192.168.191.217 192.168.191.229 192.168.191.225
192.168.191.233 192.168.191.221 192.168.191.161 192.168.191.134
192.168.191.138 192.168.207.130 192.168.191.130

Additional References

Related Documents

Related Topic
Document Title

Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS

http://www.cisco.com/en/US/docs/switches/metro/me3600x_3800x/software/release/15.3_3_S/configuration/guide/swmpls.html

Standards

Standard
Title

—

There are no new standards.

MIBs

MIB
MIBs Link
  • —

To locate and download MIBs for selected platforms, Cisco software releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

RFCs

RFC
Title

—

There are no new RFC.

Technical Assistance

Description
Link

The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password.

http://www.cisco.com/cisco/web/support/index.html

Feature Information for MPLS Load Balancing

Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

note.gif

Noteblank.gif Table 55-2 lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

 

Table 55-2 Feature Information for MPLS Load Balancing

Feature Name
Releases
Feature Information

MPLS Load Balancing

15.3(3)S

This feature was introduced.

Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1721R)

Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.

© 2014 Cisco Systems, Inc. All rights reserved.

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