Example for Configuring MPLS TE Auto FRR
Networking Requirements
On the network shown in Figure 1, a primary CR-LSP is established over an explicit path LSRA -> LSRB -> LSRC. Bypass CR-LSPs need to be established on the ingress LSRA and the transit node LSRB respectively. These bypass CR-LSPs are required to provide bandwidth protection. A node protection tunnel is a bypass tunnel that originates from LSRA's inbound interface, terminates at LSRC's outbound interface, and passes through the intermediate LSRB. A link protection tunnel is a bypass tunnel that originates from LSRB's outbound interface, terminates at LSRC's inbound interface, and passes through the intermediate LSRD or is a direct link between LSRB's outbound interface and LSRC's inbound interface.
Configuration Roadmap
The configuration roadmap is as follows:
Configure a primary CR-LSP and enable MPLS Auto FRR in the MPLS and tunnel interface views.
Set the protected bandwidth and priorities for the bypass CR-LSP in the tunnel interface view.
Data Preparation
To complete the configuration, you need the following data:
OSPF process ID and OSPF area ID for every node
Path for the primary CR-LSP
Tunnel interface number, source and destination IP addresses of the primary tunnel, tunnel ID, RSVP-TE signaling protocol, and tunnel bandwidth
Procedure
- Assign an IP address and its mask to every interface.
Assign an IP address and its mask to every physical interface and configure a loopback interface address as an LSR ID on every node shown in Figure 1. For configuration details, see Configuration Files in this section.
- Configure OSPF to advertise every network segment route and host route.
Configure OSPF on all nodes to advertise host routes. For configuration details, see Configuration Files in this section.
After completing the configurations, run the display ip routing-table command on every node. All nodes have learned routes from one another.
- Configure basic MPLS functions and enable MPLS TE, RSVP-TE, and CSPF.
# Configure LSRA.
[*LSRA] mpls lsr-id 1.1.1.1 [*LSRA] mpls [*LSRA-mpls] mpls te [*LSRA-mpls] mpls rsvp-te [*LSRA-mpls] mpls te cspf [*LSRA-mpls] quit [*LSRA] interface gigabitethernet 0/1/8 [*LSRA-GigabitEthernet0/1/8] mpls [*LSRA-GigabitEthernet0/1/8] mpls te [*LSRA-GigabitEthernet0/1/8] mpls rsvp-te [*LSRA-GigabitEthernet0/1/8] quit [*LSRA] interface gigabitethernet 0/1/0 [*LSRA-GigabitEthernet0/1/0] mpls [*LSRA-GigabitEthernet0/1/0] mpls te [*LSRA-GigabitEthernet0/1/0] mpls rsvp-te [*LSRA-GigabitEthernet0/1/0] commit [~LSRA-GigabitEthernet0/1/0] quit
Repeat this step for LSRB, LSRC, and LSRD. For configuration details, see Configuration Files in this section.
- Configure OSPF TE.
# Configure LSRA.
[~LSRA] ospf [~LSRA-ospf-1] opaque-capability enable [*LSRA-ospf-1] area 0 [*LSRA-ospf-1-area-0.0.0.0] mpls-te enable [*LSRA-ospf-1-area-0.0.0.0] commit [~LSRA-ospf-1-area-0.0.0.0] quit [~LSRA-ospf-1] quit
Repeat this step for LSRB, LSRC, and LSRD. For configuration details, see Configuration Files in this section.
- Configure an explicit path for the primary CR-LSP.
[~LSRA] explicit-path master [*LSRA-explicit-path-master] next hop 2.1.1.1 [*LSRA-explicit-path-master] next hop 3.1.1.1 [*LSRA-explicit-path-master] commit
- Configure TE Auto FRR.
# Configure LSRA.
[~LSRA] mpls [~LSRA-mpls] mpls te auto-frr [*LSRA-mpls] commit
# Configure LSRB.
[~LSRB] mpls [~LSRB-mpls] mpls te auto-frr [*LSRB-mpls] commit
- Configure a primary tunnel.
[~LSRA] interface tunnel2 [*LSRA-Tunnel2] ip address unnumbered interface loopBack1 [*LSRA-Tunnel2] tunnel-protocol mpls te [*LSRA-Tunnel2] destination 3.3.3.3 [*LSRA-Tunnel2] mpls te tunnel-id 200 [*LSRA-Tunnel2] mpls te record-route label [*LSRA-Tunnel2] mpls te path explicit-path master [*LSRA-Tunnel2] mpls te bandwidth ct0 400 [*LSRA-Tunnel2] mpls te priority 4 3 [*LSRA-Tunnel2] mpls te fast-reroute bandwidth [*LSRA-Tunnel2] mpls te bypass-attributes bandwidth 200 priority 5 4 [*LSRA-Tunnel2] commit [~LSRA-Tunnel2] quit
- Verify the configuration.
Run the display mpls te tunnel name Tunnel2 verbose command on LSRA. Information about the primary and bypass CR-LSPs is displayed.
[~LSRA] display mpls te tunnel name Tunnel2 verbose No : 1 Tunnel-Name : Tunnel2 Tunnel Interface Name : Tunnel2 TunnelIndex : - Session ID : 200 LSP ID : 164 LSR Role : Ingress Ingress LSR ID : 1.1.1.1 Egress LSR ID : 3.3.3.3 In-Interface : - Out-Interface : GE0/1/8 Sign-Protocol : RSVP TE Resv Style : SE IncludeAnyAff : 0x0 ExcludeAnyAff : 0x0 IncludeAllAff : 0x0 ER-Hop Table Index : 1 AR-Hop Table Index: 674 C-Hop Table Index : 579 PrevTunnelIndexInSession: - NextTunnelIndexInSession: - PSB Handle : - Created Time : 2015-01-28 11:10:32 RSVP LSP Type : - -------------------------------- DS-TE Information -------------------------------- Bandwidth Reserved Flag : Reserved CT0 Bandwidth(Kbit/sec) : 400 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec) : 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec) : 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec) : 0 CT7 Bandwidth(Kbit/sec): 0 Setup-Priority : 4 Hold-Priority : 3 -------------------------------- FRR Information -------------------------------- Primary LSP Info Bypass In Use : Not Used Bypass Tunnel Id : 32866 BypassTunnel : Tunnel Index[AutoTunnel32866], InnerLabel[3] Bypass LSP ID : 165 FrrNextHop : 10.1.1.1 ReferAutoBypassHandle : - FrrPrevTunnelTableIndex : - FrrNextTunnelTableIndex: - Bypass Attribute Setup Priority : 5 Hold Priority : 4 HopLimit : 32 Bandwidth : 200 IncludeAnyGroup : 0 ExcludeAnyGroup : 0 IncludeAllGroup : 0 Bypass Unbound Bandwidth Info(Kbit/sec) CT0 Unbound Bandwidth : - CT1 Unbound Bandwidth: - CT2 Unbound Bandwidth : - CT3 Unbound Bandwidth: - CT4 Unbound Bandwidth : - CT5 Unbound Bandwidth: - CT6 Unbound Bandwidth : - CT7 Unbound Bandwidth: - -------------------------------- BFD Information -------------------------------- NextSessionTunnelIndex : - PrevSessionTunnelIndex: - NextLspId : - PrevLspId : -
The primary CR-LSP has been bound to a bypass CR-LSP named AutoTunnel32866.
Run the display mpls te tunnel-interface auto-bypass-tunnel command. Detailed information about the automatic bypass CR-LSP is displayed. Its bandwidth, and setup and holding priorities are the same as bypass attributes in the primary CR-LSP information.
[~LSRA] display mpls te tunnel-interface auto-bypass-tunnel AutoTunnel32866 Tunnel Name : AutoTunnel32866 Signalled Tunnel Name: - Tunnel State Desc : CR-LSP is Up Tunnel Attributes : Active LSP : Primary LSP Traffic Switch : - Session ID : 32866 Ingress LSR ID : 1.1.1.1 Egress LSR ID: 3.3.3.3 Admin State : UP Oper State : UP Signaling Protocol : RSVP FTid : 130 Tie-Breaking Policy : None Metric Type : None Bfd Cap : None Reopt : Disabled Reopt Freq : - Inter-area Reopt : Disabled Auto BW : Disabled Threshold : - Current Collected BW: - Auto BW Freq : - Min BW : - Max BW : - Offload : Disabled Offload Freq : - Low Value : - High Value : - Readjust Value : - Offload Explicit Path Name: - Tunnel Group : Primary Interfaces Protected: GigabitEthernet0/1/8 Excluded IP Address : 2.1.1.1 2.1.1.2 2.2.2.2 Referred LSP Count : 1 Primary Tunnel : - Pri Tunn Sum : - Backup Tunnel : - Group Status : Down Oam Status : None IPTN InLabel : - BackUp LSP Type : None BestEffort : Disabled Secondary HopLimit : - BestEffort HopLimit : - Secondary Explicit Path Name: - Secondary Affinity Prop/Mask: 0x0/0x0 BestEffort Affinity Prop/Mask: 0x0/0x0 IsConfigLspConstraint: - Hot-Standby Revertive Mode: Revertive Hot-Standby Overlap-path: Disabled Hot-Standby Switch State: CLEAR Bit Error Detection: Disabled Bit Error Detection Switch Threshold: - Bit Error Detection Resume Threshold: - Ip-Prefix Name : - P2p-Template Name : - PCE Delegate : No LSP Control Status : Local control Path Verification : -- Entropy Label : None Associated Tunnel Group ID: - Associated Tunnel Group Type: - Auto BW Remain Time : 200 s Reopt Remain Time : 100 s Metric Inherit IGP : None Binding Sid : - Reverse Binding Sid : - Self-Ping : Disable Self-Ping Duration : 1800 sec FRR Attr Source : - Is FRR degrade down : No Primary LSP ID : 1.1.1.1:165 LSP State : UP LSP Type : Primary Setup Priority : 5 Hold Priority: 4 IncludeAll : 0x0 IncludeAny : 0x0 ExcludeAny : 0x0 Affinity Prop/Mask : 0x0/0x0 Resv Style : SE Configured Bandwidth Information: CT0 Bandwidth(Kbit/sec): 200 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Actual Bandwidth Information: CT0 Bandwidth(Kbit/sec): 200 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Explicit Path Name : master Hop Limit: - Record Route : Enabled Record Label : Enabled Route Pinning : Disabled FRR Flag : Disabled IdleTime Remain : - BFD Status : - Soft Preemption : Disabled Reroute Flag : Disabled Pce Flag : Normal Path Setup Type : EXPLICIT Create Modify LSP Reason: - Self-Ping Status : -
The automatic bypass CR-LSP protects traffic on GE 0/1/8, the outbound interface of the primary CR-LSP, not other three interfaces. The bandwidth is 200 kbit/s, and the setup and holding priority values are 5 and 4, respectively.
Run the display mpls te tunnel path command on LSRA. The bypass CR-LSP is providing both node and bandwidth protection for the primary CR-LSP.
[~LSRA] display mpls te tunnel path Tunnel Interface Name : Tunnel2 Lsp ID : 1.1.1.1 :200 :164 Hop Information Hop 0 2.1.1.1 Local-Protection available | bandwidth | node Hop 1 2.1.1.2 Label 32846 Hop 2 2.2.2.2 Label 32846 Hop 3 3.1.1.1 Local-Protection available | bandwidth Hop 4 3.1.1.2 Label 3 Hop 5 3.3.3.3 Label 3 Tunnel Interface Name : AutoTunnel32866 Lsp ID : 1.1.1.1 :32866 :165 Hop Information Hop 0 10.1.1.2 Hop 1 10.1.1.1 Label 3 Hop 2 3.3.3.3 Label 3Run the display mpls te tunnel name Tunnel2 verbose command on the transit LSRB. Information about the primary and bypass CR-LSPs is displayed.
[~LSRB] display mpls te tunnel name Tunnel2 verbose No : 1 Tunnel-Name : Tunnel2 Tunnel Interface Name : - TunnelIndex : - Session ID : 200 LSP ID : 164 LSR Role : Transit Ingress LSR ID : 1.1.1.1 Egress LSR ID : 3.3.3.3 In-Interface : GE0/1/16 Out-Interface : GE0/1/8 Sign-Protocol : RSVP TE Resv Style : SE IncludeAnyAff : 0x0 ExcludeAnyAff : 0x0 IncludeAllAff : 0x0 ER-Hop Table Index : - AR-Hop Table Index: - C-Hop Table Index : - PrevTunnelIndexInSession: - NextTunnelIndexInSession: - PSB Handle : - Created Time : 2015-01-28 11:10:32 RSVP LSP Type : - -------------------------------- DS-TE Information -------------------------------- Bandwidth Reserved Flag : Reserved CT0 Bandwidth(Kbit/sec) : 400 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec) : 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec) : 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec) : 0 CT7 Bandwidth(Kbit/sec): 0 Setup-Priority : 4 Hold-Priority : 3 -------------------------------- FRR Information -------------------------------- Primary LSP Info Bypass In Use : Not Used Bypass Tunnel Id : 32865 BypassTunnel : Tunnel Index[AutoTunnel32865], InnerLabel[3] Bypass LSP ID : 6 FrrNextHop : 4.1.1.2 ReferAutoBypassHandle : - FrrPrevTunnelTableIndex : - FrrNextTunnelTableIndex: - Bypass Attribute Setup Priority : 5 Hold Priority : 4 HopLimit : 32 Bandwidth : 200 IncludeAnyGroup : 0 ExcludeAnyGroup : 0 IncludeAllGroup : 0 Bypass Unbound Bandwidth Info(Kbit/sec) CT0 Unbound Bandwidth : - CT1 Unbound Bandwidth: - CT2 Unbound Bandwidth : - CT3 Unbound Bandwidth: - CT4 Unbound Bandwidth : - CT5 Unbound Bandwidth: - CT6 Unbound Bandwidth : - CT7 Unbound Bandwidth: - -------------------------------- BFD Information -------------------------------- NextSessionTunnelIndex : - PrevSessionTunnelIndex: - NextLspId : - PrevLspId : -
The primary CR-LSP has been bound to a bypass CR-LSP named AutoTunnel32865.
Run the display mpls te tunnel-interface auto-bypass-tunnel command. Detailed information about the automatic bypass CR-LSP is displayed. Its bandwidth, and setup and holding priorities are the same as bypass attributes in the primary CR-LSP information.
[~LSRB] display mpls te tunnel-interface auto-bypass-tunnel AutoTunnel32865 Tunnel Name : AutoTunnel32865 Signalled Tunnel Name: - Tunnel State Desc : CR-LSP is Up Tunnel Attributes : Active LSP : Primary LSP Traffic Switch : - Session ID : 32865 Ingress LSR ID : 2.2.2.2 Egress LSR ID: 3.3.3.3 Admin State : UP Oper State : UP Signaling Protocol : RSVP FTid : 97 Tie-Breaking Policy : None Metric Type : None Bfd Cap : None Reopt : Disabled Reopt Freq : - Inter-area Reopt : Disabled Auto BW : Disabled Threshold : - Current Collected BW: - Auto BW Freq : - Min BW : - Max BW : - Offload : Disabled Offload Freq : - Low Value : - High Value : - Readjust Value : - Offload Explicit Path Name: - Tunnel Group : Primary Interfaces Protected: GigabitEthernet0/1/8 Excluded IP Address : 3.1.1.1 3.1.1.2 Referred LSP Count : 1 Primary Tunnel : - Pri Tunn Sum : - Backup Tunnel : - Group Status : Down Oam Status : None IPTN InLabel : - BackUp LSP Type : None BestEffort : Disabled Secondary HopLimit : - BestEffort HopLimit : - Secondary Explicit Path Name: - Secondary Affinity Prop/Mask: 0x0/0x0 BestEffort Affinity Prop/Mask: 0x0/0x0 IsConfigLspConstraint: - Hot-Standby Revertive Mode: Revertive Hot-Standby Overlap-path: Disabled Hot-Standby Switch State: CLEAR Bit Error Detection: Disabled Bit Error Detection Switch Threshold: - Bit Error Detection Resume Threshold: - Ip-Prefix Name : - P2p-Template Name : - PCE Delegate : No LSP Control Status : Local control Path Verification : - Entropy Label : None Associated Tunnel Group ID: - Associated Tunnel Group Type: - Auto BW Remain Time : 200 s Reopt Remain Time : 100 s Metric Inherit IGP : None Binding Sid : - Reverse Binding Sid : - Self-Ping : Disable Self-Ping Duration : 1800 sec FRR Attr Source : - Is FRR degrade down : No Primary LSP ID : 2.2.2.2:6 LSP State : UP LSP Type : Primary Setup Priority : 5 Hold Priority: 4 IncludeAll : 0x0 IncludeAny : 0x0 ExcludeAny : 0x0 Affinity Prop/Mask : 0x0/0x0 Resv Style : SE Configured Bandwidth Information: CT0 Bandwidth(Kbit/sec): 200 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Actual Bandwidth Information: CT0 Bandwidth(Kbit/sec): 200 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Explicit Path Name : - Hop Limit: - Record Route : Enabled Record Label : Enabled Route Pinning : Disabled FRR Flag : Disabled IdleTime Remain : - BFD Status : - Soft Preemption : Disabled Reroute Flag : Disabled Pce Flag : Normal Path Setup Type : CSPF Create Modify LSP Reason: - Self-Ping Status : -
The automatic bypass CR-LSP protects traffic on GE 0/1/8, the outbound interface of the primary CR-LSP. The bandwidth is 200 kbit/s, and the setup and holding priority values are 5 and 4, respectively.
Run the display mpls te tunnel path command on LSRB. Information about the path of both primary CR-LSP and automatic bypass CR-LSP is displayed.
[~LSRB] display mpls te tunnel path Tunnel Interface Name : Tunnel2 Lsp ID : 1.1.1.1 :200 :164 Hop Information Hop 0 1.1.1.1 Hop 1 2.1.1.1 Local-Protection available | bandwidth | node Hop 2 2.1.1.2 Label 32846 Hop 3 2.2.2.2 Label 32846 Hop 4 3.1.1.1 Local-Protection available | bandwidth Hop 5 3.1.1.2 Label 3 Hop 6 3.3.3.3 Label 3 Tunnel Interface Name : AutoTunnel32865 Lsp ID : 2.2.2.2 :32865 :6 Hop Information Hop 0 3.2.1.1 Hop 1 3.2.1.2 Label 32839 Hop 2 4.4.4.4 Label 32839 Hop 3 4.1.1.1 Hop 4 4.1.1.2 Label 3 Hop 5 3.3.3.3 Label 3
Configuration Files
LSRA configuration file
# sysname LSR A # mpls lsr-id 1.1.1.1 # mpls mpls te mpls te auto-frr mpls te cspf mpls rsvp-te # explicit-path master next hop 2.1.1.1 next hop 3.1.1.1 # ospf 1 opaque-capability enable area 0.0.0.0 mpls-te enable network 10.1.1.0 0.0.0.255 network 2.1.1.0 0.0.0.255 network 1.1.1.1 0.0.0.0 # interface GigabitEthernet0/1/0 undo shutdown ip address 10.1.1.2 255.255.255.0 mpls mpls te mpls rsvp-te # interface GigabitEthernet0/1/8 undo shutdown ip address 2.1.1.1 255.255.255.0 mpls mpls te mpls rsvp-te # interface LoopBack1 ip address 1.1.1.1 255.255.255.255 # interface Tunnel2 ip address unnumbered interface LoopBack1 tunnel-protocol mpls te destination 3.3.3.3 mpls te tunnel-id 200 mpls te record-route label mpls te priority 4 3 mpls te bandwidth ct0 400 mpls te path explicit-path master mpls te fast-reroute bandwidth mpls te bypass-attributes bandwidth 200 priority 5 4 # return
LSRB configuration file
# sysname LSRB # mpls lsr-id 2.2.2.2 # mpls mpls te mpls te auto-frr mpls te cspf mpls rsvp-te # ospf 1 opaque-capability enable area 0.0.0.0 mpls-te enable network 3.1.1.0 0.0.0.255 network 3.2.1.0 0.0.0.255 network 2.1.1.0 0.0.0.255 network 2.2.2.2 0.0.0.0 # interface GigabitEthernet0/1/0 undo shutdown ip address 3.2.1.1 255.255.255.0 mpls mpls te mpls rsvp-te # interface GigabitEthernet0/1/8 undo shutdown ip address 3.1.1.1 255.255.255.0 mpls mpls te mpls rsvp-te # interface GigabitEthernet0/1/16 undo shutdown ip address 2.1.1.2 255.255.255.0 mpls mpls te mpls rsvp-te # interface LoopBack1 ip address 2.2.2.2 255.255.255.255 # return
LSRC configuration file
# sysname LSRC # mpls lsr-id 3.3.3.3 # mpls mpls te mpls rsvp-te # ospf 1 opaque-capability enable area 0.0.0.0 mpls-te enable network 10.1.1.0 0.0.0.255 network 3.1.1.0 0.0.0.255 network 4.1.1.0 0.0.0.255 network 3.3.3.3 0.0.0.0 # interface GigabitEthernet0/1/0 undo shutdown ip address 10.1.1.1 255.255.255.0 mpls mpls te mpls rsvp-te # interface GigabitEthernet0/1/8 undo shutdown ip address 4.1.1.2 255.255.255.0 mpls mpls te mpls rsvp-te # interface GigabitEthernet0/1/16 undo shutdown ip address 3.1.1.2 255.255.255.0 mpls mpls te mpls rsvp-te # interface LoopBack1 ip address 3.3.3.3 255.255.255.255 # return
LSRD configuration file
# sysname LSRD # mpls lsr-id 4.4.4.4 # mpls mpls te mpls rsvp-te # ospf 1 opaque-capability enable area 0.0.0.0 mpls-te enable network 3.2.1.0 0.0.0.255 network 4.1.1.0 0.0.0.255 network 4.4.4.4 0.0.0.0 # interface GigabitEthernet0/1/8 undo shutdown mpls ip address 4.1.1.1 255.255.255.0 mpls te mpls rsvp-te # interface GigabitEthernet0/1/16 undo shutdown ip address 3.2.1.2 255.255.255.0 mpls mpls te mpls rsvp-te # interface LoopBack1 ip address 4.4.4.4 255.255.255.255 # Return