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Example for Configuring L2VPN Access over VCs
This section provides an example for configuring L2VPN access over VCs in IP RAN virtual cluster access scenarios.
Networking Requirements
In the virtual cluster access scenario shown in Figure 2-11, AP1 transmits packets received from the base transceiver station (BTS) over a VC (carried over a VP) to each master. To implement end-to-end time division multiplexing (TDM) service bearing, configure L2VPN access over VCs on the masters.
Figure 2-11 Configuring L2VPN access over VCs![]()
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- Interfaces 1, 2, 3, and 4 stand for GE 0/1/0, GE 0/2/0, E1 0/1/0, and CPOS 0/1/0, respectively.
Table 2-6 Interfaces and their IP addresses on each device
Device |
Interface |
IP Address |
|---|---|---|
AP1 |
Loopback 0 |
1.1.1.1/32 |
GE 0/1/0 |
10.1.1.1/24 |
|
GE 0/2/0 |
10.10.1.1/24 |
|
E1 0/1/0 |
- |
|
Master1 |
Loopback0 |
2.2.2.2/32 |
GE 0/1/0 |
10.1.1.2/24 |
|
GE 0/2/0 |
10.20.1.1/24 |
|
Master2 |
Loopback0 |
3.3.3.3/32 |
GE 0/1/0 |
10.10.1.2/24 |
|
GE 0/2/0 |
10.30.1.1/24 |
|
RSG1 |
Loopback0 |
4.4.4.4/32 |
GE 0/1/0 |
10.40.1.1/24 |
|
GE 0/2/0 |
10.20.1.2/24 |
|
E1 0/1/0 |
- |
|
CPOS 0/1/0 |
- |
|
RSG2 |
Loopback0 |
5.5.5.5/32 |
GE 0/1/0 |
10.40.1.2/24 |
|
GE 0/2/0 |
10.30.1.2/24 |
|
E1 0/1/0 |
- |
|
CPOS0/1/0 |
- |
Configuration Roadmap
The configuration roadmap is as follows:
Assign an IP address to each interface and configure a loopback interface address as the management IP address on each node.
Enable virtual cluster both globally and per interface on the masters and AP, configure management IP addresses on the masters and AP, and specify the primary and secondary masters for the AP.
Configure Interior Gateway Protocol (IGP) routes used for communication between the masters and radio network controller site gateways (RSGs).
Configure Label Distribution Protocol (LDP) label switched paths (LSPs) between the masters and RSGs.
Configure virtual private wire service (VPWS) PWs between the masters and RSGs, and a bypass PW between RSG1 and RSG2.
Data Preparation
To complete the configuration, you need the following data:
IP addresses of directly connected interfaces and loopback interface addresses on each node
Primary and secondary masters for AP1 (Master1 and Master2)
Remote-AP interface numbers (2) for Master1 and Master2
Procedure
- Assign an IP address to each interface and configure a loopback interface address as the management IP address on each node.
For configuration details, see Configuration Files in this section.
- Enable virtual cluster both globally and per interface on the masters and AP, configure management IP addresses on the masters and AP, and specify the primary and secondary masters for the AP.
For configuration details, see Configuration Files in this section.
- Configure IGP routes for aggregation-side devices. The following example uses Open Shortest Path First (OSPF) as the IGP.
For configuration details, see Configuration Files in this section.
- Configure LDP LSPs between the masters and RSGs.
# Configure Master1.
<Master1> system-view
[~Master1] mpls[*Master1-mpls-ldp] mpls ldp[*Master1-mpls-ldp] quit[*Master1] interface gigabitethernet 0/2/0
[*Master1-GigabitEthernet0/2/0] mpls
[*Master1-GigabitEthernet0/2/0] mpls ldp
[*Master1-GigabitEthernet0/2/0] quit
[*Master1] commit# Configure Master2.
<Master2> system-view
[~Master2] mpls[*Master2-mpls-ldp] mpls ldp[*Master2-mpls-ldp] quit[*Master2] interface gigabitethernet 0/2/0
[*Master2-GigabitEthernet0/2/0] mpls
[*Master2-GigabitEthernet0/2/0] mpls ldp
[*Master2-GigabitEthernet0/2/0] quit
[*Master2] commit# Configure RSG1.
<RSG1> system-view
[~RSG1] mpls[*RSG1-mpls-ldp] mpls ldp[*RSG1-mpls-ldp] quit[*RSG1] interface gigabitethernet 0/1/0
[*RSG1-GigabitEthernet0/1/0] mpls
[*RSG1-GigabitEthernet0/1/0] mpls ldp
[*RSG1-GigabitEthernet0/1/0] quit
[*RSG1] interface gigabitethernet 0/2/0
[*RSG1-GigabitEthernet0/2/0] mpls
[*RSG1-GigabitEthernet0/2/0] mpls ldp
[*RSG1-GigabitEthernet0/2/0] quit
[*RSG1] commit# Configure RSG2.
<RSG2> system-view
[~RSG2] mpls[*RSG2-mpls-ldp] mpls ldp[*RSG2-mpls-ldp] quit[*RSG2] interface gigabitethernet 0/1/0
[*RSG2-GigabitEthernet0/1/0] mpls
[*RSG2-GigabitEthernet0/1/0] mpls ldp
[*RSG2-GigabitEthernet0/1/0] quit
[*RSG2] interface gigabitethernet 0/2/0
[*RSG2-GigabitEthernet0/2/0] mpls
[*RSG2-GigabitEthernet0/2/0] mpls ldp
[*RSG2-GigabitEthernet0/2/0] quit
[*RSG2] commit - Configure VPWS PWs between the masters and RSGs, and a bypass PW between RSG1 and RSG2.
# Configure Master1.
[~Master1] interface remote-ap 2[*Master1-Remote-Ap2] mpls l2vc encapsulation cesopsn-basic 4.4.4.4 4 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa[*Master1-Remote-Ap2] bind ap ip 1.1.1.1 interface serial 0/1/0:1
[*Master1-Remote-Ap2] quit[*Master1] commit# Configure Master2.
[~Master2] interface remote-ap 2[*Master2-Remote-Ap2] mpls l2vc encapsulation cesopsn-basic 5.5.5.5 5 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa[*Master2-Remote-Ap2] bind ap ip 1.1.1.1 interface serial 0/1/0:1
[*Master2-Remote-Ap2] quit[*Master2] commitConfigure RSG1.
[~RSG1] interface cpos-trunk 1[*RSG1-Cpos-Trunk1] quit[*RSG1] controller cpos 0/1/0
[*RSG1-Cpos0/1/0] cpos-trunk 1
[*RSG1-Cpos0/1/0] quit
[~RSG1] interface cpos-trunk 1[*RSG1-Cpos-Trunk1] e1 2 channel-set 1 timeslot-list 1-31[*RSG1-Cpos-Trunk10/1/0] quit
[*RSG1] interface gigabitethernet 0/1/0
[*RSG1-GigabitEthernet0/1/0] mpls
[*RSG1-GigabitEthernet0/1/0] mpls ldp
[*RSG1-GigabitEthernet0/1/0] quit
[*RSG1] interface gigabitethernet 0/2/0
[*RSG1-GigabitEthernet0/2/0] mpls
[*RSG1-GigabitEthernet0/2/0] mpls ldp
[*RSG1-GigabitEthernet0/2/0] quit
[*RSG1] interface trunk-serial 1/2:1[*RSG1-Serial0/1/0] link-protocol tdm
[*RSG1-Serial0/1/0] mpls l2vc 2.2.2.2 4 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa
[*RSG1-Serial0/1/0] mpls l2vc 5.5.5.5 3 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa bypass
[*RSG1-Serial0/1/0] quit
[*RSG1] commit# Configure RSG2.
[*RSG2] interface cpos-trunk 1[*RSG2-Cpos-Trunk1] quit[*RSG2] controller cpos 0/1/0
[*RSG2-Cpos0/1/0] cpos-trunk 1
[*RSG2-Cpos0/1/0] quit
[*RSG2] interface cpos-trunk 1[*RSG2-Cpos-Trunk1] e1 2 channel-set 1 timeslot-list 1-31[*RSG2-Cpos-Trunk10/1/0] quit
[*RSG2] interface gigabitethernet 0/1/0
[*RSG2-GigabitEthernet0/1/0] mpls
[*RSG2-GigabitEthernet0/1/0] mpls ldp
[*RSG2-GigabitEthernet0/1/0] quit
[*RSG2] interface gigabitethernet 0/2/0
[*RSG2-GigabitEthernet0/2/0] mpls
[*RSG2-GigabitEthernet0/2/0] mpls ldp
[*RSG2-GigabitEthernet0/2/0] quit
[*RSG2] interface trunk-serial 1/2:1[*RSG2-Serial0/1/0] link-protocol tdm
[*RSG2-Serial0/1/0] mpls l2vc 3.3.3.3 5 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa
[*RSG2-Serial0/1/0] mpls l2vc 4.4.4.4 3 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa bypass
[*RSG2-Serial0/1/0] quit
[*RSG1] commit - Verify the configuration.
After completing the configurations, run the display virtual-cluster-access vc command on each node. The command output shows that the VC status is Up. The following example uses the command output on Master1.
[~Master1] display virtual-cluster-access vc-------------------------------------------------------------------------------- MasterID ApID State ApIF -------------------------------------------------------------------------------- 2.2.2.2 1.1.1.1 Up Serial0/1/0:1Run the display mpls l2vc command on each master. The command output shows that an LDP VPWS PW has been established. The following example uses the command output on Master1.
[~Master1] display mpls l2vc interface remote-ap 2*client interface : Remote-Ap2 is up Administrator PW : no session state : up AC status : up VC state : up Label state : 0 Token state : 0 VC ID : 4 VC type : cesopsn-basic destination : 4.4.4.4 local group ID : 0 remote group ID : 0 local VC label : 32828 remote VC label : 32828 local AC OAM State : up local PSN OAM State : up local forwarding state : forwarding local status code : 0x0 (forwarding) remote AC OAM State : up remote PSN OAM state : up remote forwarding state : forwarding remote status code : 0x0 (forwarding) ignore standby state : no Dynamic BFD for PW : disable Detect Multipier : 3 Min Transit Interval : 1000 Min Receive Interval : 1000 Dynamic BFD Session : built BFD for PW : available BFD sessionIndex : -- BFD state : up VCCV State : -- manual fault : not set active state : active forwarding entry : exist OAM Protocol : -- OAM Status : -- OAM Fault Type : -- PW APS ID : -- PW APS Status : -- TTL Value : 1 link state : up local VC MTU : -- remote VC MTU : -- local VCCV : alert ttl lsp-ping bfd remote VCCV : alert ttl lsp-ping bfd local control word : enable remote control word : enable tunnel policy name : -- PW template name : -- primary or secondary : primary load balance type : flow Access-port : false Switchover Flag : false VC tunnel info : 1 tunnels NO.0 TNL type : ldp, TNL ID : 0x0000000001004c4b43 create time : 0 days, 1 hours, 2 minutes, 56 seconds up time : 0 days, 1 hours, 1 minutes, 48 seconds last change time : 0 days, 1 hours, 1 minutes, 48 seconds VC last up time : 2015/1/28 02:50:41 VC total up time : 0 days, 1 hours, 1 minutes, 48 seconds CKey : 1 NKey : 1493172332 PW redundancy mode : frr AdminPw interface : -- AdminPw link state : -- Forward state : send inactive, receive inactive Diffserv Mode : uniform Service Class : -- Color : -- DomainId : -- Domain Name : --
Configuration Files
AP1 configuration file
# sysname AP1 # bfd # virtual-cluster-access role ap admin 1.1.1.1 master primary 2.2.2.2 master secondary 3.3.3.3 # isis 65534 description auto-generated for virtual-cluster-access is-level level-2 cost-style wide virtual-cluster-access enable network-entity 00.38ba.103a.2c01.00 # controller E10/1/0 channel-set 1 timeslot-list 1-31 undo shutdown # interface GigabitEthernet0/1/0 undo shutdown ip address 10.1.1.1 255.255.255.0 virtual-cluster-access enable isis enable 65534 # interface GigabitEthernet0/2/0 undo shutdown ip address 10.10.1.1 255.255.255.0 virtual-cluster-access enable isis enable 65534 # interface LoopBack0 ip address 1.1.1.1 255.255.255.255 isis enable 65534 # interface Serial0/1/0:1 undo shutdown link-protocol tdm # return
Master1 configuration file
# sysname Master1 # bfd # mpls lsr-id 2.2.2.2 # mpls # mpls l2vpn # mpls ldp # ipv4-family # virtual-cluster-access role master admin 2.2.2.2 # isis 65534 description auto-generated for virtual-cluster-access is-level level-2 cost-style wide virtual-cluster-access enable network-entity 00.38ba.103a.2c02.00 # interface GigabitEthernet0/1/0 undo shutdown ip address 10.1.1.2 255.255.255.0 isis enable 65534 mpls virtual-cluster-access enable # interface GigabitEthernet0/2/0 undo shutdown ip address 10.20.1.1 255.255.255.0 mpls mpls ldp # interface GigabitEthernet0/1/1 undo shutdown ip address 10.70.1.1 255.255.255.0 # interface LoopBack0 ip address 2.2.2.2 255.255.255.255 isis enable 65534 # interface Remote-Ap2 mpls l2vc encapsulation cesopsn-basic 4.4.4.4 4 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa bind ap ip 1.1.1.1 interface Serial0/1/0:1 # ospf 1 opaque-capability enable area 0.0.0.0 network 10.20.1.0 0.0.0.255 network 10.70.1.0 0.0.0.255 network 2.2.2.2 0.0.0.0 mpls-te enable # return
- Master2 configuration file
# sysname Master2 # bfd # mpls lsr-id 3.3.3.3 # mpls # mpls l2vpn # mpls ldp # ipv4-family # virtual-cluster-access role master admin 3.3.3.3 # isis 65534 description auto-generated for virtual-cluster-access is-level level-2 cost-style wide virtual-cluster-access enable network-entity 00.38ba.103a.2c03.00 # interface GigabitEthernet0/1/0 undo shutdown ip address 10.10.1.2 255.255.255.0 isis enable 65534 mpls virtual-cluster-access enable # interface GigabitEthernet0/2/0 undo shutdown ip address 10.30.1.1 255.255.255.0 mpls mpls ldp # interface GigabitEthernet0/1/1 undo shutdown ip address 10.70.1.2 255.255.255.0 # interface LoopBack0 ip address 3.3.3.3 255.255.255.255 isis enable 65534 # interface Remote-Ap2 mpls l2vc encapsulation cesopsn-basic 5.5.5.5 5 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa bind ap ip 1.1.1.1 interface Serial0/1/0:1 # ospf 1 opaque-capability enable area 0.0.0.0 network 10.30.1.0 0.0.0.255 network 10.70.1.0 0.0.0.255 network 3.3.3.3 0.0.0.0 # return
- RSG1 configuration file
# sysname RSG1 # mpls lsr-id 4.4.4.4 # mpls # mpls l2vpn # mpls ldp # ipv4-family # controller CPOS0/1/0 undo shutdown cpos-trunk 1 # controller CPOS-Trunk1 undo shutdown e1 2 channel-set 1 timeslot-list 1-31 # interface GigabitEthernet0/1/0 undo shutdown ip address 10.40.1.1 255.255.255.0 mpls mpls ldp # interface GigabitEthernet0/2/0 undo shutdown ip address 10.20.1.2 255.255.255.0 mpls mpls ldp # interface TVCrunk-Serial1/2:1 link-protocol tdm mpls l2vc 2.2.2.2 4 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa mpls l2vc 5.5.5.5 3 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa bypass # interface LoopBack0 ip address 3.3.3.3 255.255.255.255 # ospf 1 area 0.0.0.0 network 4.4.4.4 0.0.0.0 network 10.20.1.0 0.0.0.255 network 10.40.2.0 0.0.0.255 # return
- RSG2 configuration file
# sysname RSG2 # mpls lsr-id 5.5.5.5 # mpls # mpls l2vpn # mpls ldp # ipv4-family # # controller CPOS0/1/0 undo shutdown cpos-trunk 1 # controller CPOS-Trunk1 undo shutdown e1 2 channel-set 1 timeslot-list 1-31 # interface GigabitEthernet0/1/0 undo shutdown ip address 10.40.1.2 255.255.255.0 mpls mpls ldp # interface GigabitEthernet0/2/0 undo shutdown ip address 10.30.1.2 255.255.255.0 mpls mpls ldp # interface Trunk-Serial1/2:1 link-protocol tdm mpls l2vc 3.3.3.3 5 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa mpls l2vc 4.4.4.4 3 tdm-encapsulation-number 16 jitter-buffer 32 idle-code fa bypass # interface LoopBack0 ip address 5.5.5.5 255.255.255.255 # ospf 1 area 0.0.0.0 network 4.4.4.4 0.0.0.0 network 10.40.1.0 0.0.0.255 network 10.30.1.0 0.0.0.255 # return
