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7-2 MPLS Module Installation and User Guide
Configuring MPLS Layer-2 VPNs
Layer-2 VPN Services
There are two basic types of Layer-2 VPN services. The first is a VLAN service. This
service transparently interconnects two or more VLAN segments together over an
MPLS network. The configured VLAN IDs for the customer switch interfaces are not
required to match, as long as the TLS egress LSR overwrites the VLAN tag with the
locally defined VLAN ID, or if the local VLAN is untagged, strips the 802.1Q tag
completely. The second service is a port service. This service transparently interconnects
two or more ports together over an MPLS network. Traffic is transported unmodified
between ports.
Extremeware supports both services, but only the VLAN service is interoperable with
other vendor implementations. Port-based TLS service requires that the dot1q tag
ethertype be configured to 9100. By changing the configured dot1q ethertype value, the
Ethernet switch ports treat 8100 tagged traffic as untagged and insert a new dot1q tag
with the configured ethertype value. By inserting a new dot1q tag, all traffic received on
a single port can be aggregated into a single VLAN and transported across an MPLS
domain as a VLAN service. All TLS edge switches must be configured to use the same
dot1q ethertype value.
MPLS VC Tunnels
MPLS virtual circuit (VC) tunnels are logical connections between two LERs over an
LSP. Like ATM VCs, these connections can be signaled ( dynamic) or statically
configured. Dynamic TLS tunnel connections are commonly referred to as VC tunnels,
because the TLS tunnel label is signaled based on the configured VC identifier (vcid).
The signaled VC label is used to create a two-label stack LSP. The outer label is the LSP
label obtained from LDP or RSVP-TE and the inner label is the signaled VC label. LERs
also signal the VC type when attempting to establish a VC tunnel. Extremeware only
supports the VLAN VC type and reject all other VC types, including the Ethernet VC
type used to signal Ethernet port service.
VLAN type VC tunnels are also referred to as TLS tunnels. Static TLS tunnels are not
signaled. The ingress and egress VC label for each TLS tunnel must be configured at
each end of the tunnel. Both static and dynamic TLS tunnels can be configured
simultaneously, but both share the same 16K TLS LER label space partition.
- MPLS Module Installation 1
- Contents 3
- 3 Configuring the MPLS Module 4
- 5 Configuring RSVP-TE 6
- 6 MPLS and IP Routing 7
- Index of Commands 10
- Introduction 11
- Conventions 12
- Related Publications 13
- Overview 15
- Summary of Features 16
- MPLS Module LED Indicators 18
- Service Port 19
- Console Port 19
- About BlackDiamond Modules 19
- About the MPLS Module 20
- About MPLS 20
- About MPLS Layer-2 VPNs 21
- About IP Unicast Forwarding 22
- Installing or Replacing an 25
- MPLS Module 25
- Safety Information 27
- MPLS Module Slot Locations 28
- Preparing for Installation 29
- (a) Loosen 31
- (b) Pivot 31
- LED Indicators 32
- Troubleshooting 33
- Table 2-1: MPLS Module LEDs 34
- Fixing Configuration Errors 35
- Fixing Power-Related Problems 36
- command to reload the image 37
- Tools and Equipment 38
- Removing an MPLS Module 38
- Configuring the MPLS Module 41
- MPLS Terms and Acronyms 42
- Overview of MPLS 43
- Label Switched Paths 44
- Label Retention Modes 45
- Label Switch Routers 46
- MPLS cloud 47
- MPLS Layer 48
- Label Stack Encoding 49
- Penultimate Hop Popping 50
- Label Binding 50
- Label Space Partitioning 50
- Configuring MPLS 52
- Configuring Interfaces 55
- You must maintain identical 56
- settings on all LERs in the 56
- Configuring QoS Mappings 57
- Dot1p-to-exp Mappings 58
- Exp-to-dot1p Mappings 58
- Protocol 63
- Advertising Labels 64
- Propagating Labels 64
- Configuring LDP 65
- Configuring LDP on a VLAN 68
- Configuring LDP Filters 68
- Restoring LDP Session Timers 71
- RSVP Elements 76
- Path Message 77
- Reservation Message 78
- Path Error Message 78
- Reservation Error Message 78
- Path Tear Message 78
- Reservation Styles 79
- Bandwidth Reservation 80
- Bandwidth Accounting 81
- RSVP State 81
- Traffic Engineering 82
- RSVP Objects 83
- RSVP Features 84
- Route Recording 85
- Explicit Route Path LSPs 85
- Redundant LSPs 86
- Improving LSP Scaling 87
- Configuring RSVP-TE on a VLAN 90
- Configuring an RSVP-TE Path 92
- Configuring an Explicit Route 93
- Configuring an RSVP-TE LSP 97
- Displaying the RSVP-TE LSP 99
- Configuration Example 100
- 172.25.23.32/30 101
- Primary LSP 101
- Secondary LSP 101
- Configuring RSVP-TE 102
- MPLS and IP Routing 105
- Routing Using LSPs 106
- 10.1.1.1/32 10.2.1.1 31 30 107
- 10.0.1.0/24 10.2.1.1 32 31 107
- 10.0.2.0/24 10.2.1.1 33 31 107
- 10.0.3.0/24 10.2.1.1 34 31 107
- Equal Cost LSPs 108
- LSPs and IBGP Next Hops 109
- Configuring MPLS Layer-2 VPNs 111
- Layer-2 VPN Services 112
- MPLS VC Tunnels 112
- Overview of MPLS Layer-2 VPNs 113
- Layer-2 VPN Domains 114
- MAC Learning 114
- TLS VPN Characteristics 115
- Adding a TLS Tunnel 118
- Deleting a TLS Tunnel 119
- 11.0.2.0/24 121
- 11.0.4.0/24 121
- TLS Tunnel 121
- Full Mesh TLS Configuration 122
- Using ESRP with MPLS TLS 127
- Tunnel Endpoint VLANs 128
- LSP Tracking 131
- Accounting 135
- Configuring Access Profiles 137
- Creating an Access Profile 139
- Specifying Subnet Masks 141
- Sequence Numbering 141
- Permit and Deny Entries 141
- Autonomous System Expressions 142
- Configuring Route Maps 143
- Creating a Route Map 145
- Route Map Operation 147
- Data traffic 148
- 192.168.101.0/24 148
- 192.168.102.0/24 148
- 192.168.100.0/24 148
- See the 153
- General Switch Attributes 156
- 802.1p and 802.1Q Commands 158
- VLAN Commands 159
- FDB Commands 159
- Basic IP Commands 159
- Optional 160
- Keywords 160
- ICMP Commands 161
- OSPF Commands 162
- BGP Commands 162
- Route Map Commands 162
- PPP Commands 163
- ESRP and VRRP Commands 163
- Debug Trace Commands 164
- • Quality of Service (QoS) 165
- Supported MIBs and Standards 167
- MIBs Supported for MPLS 168
- Numerics 169
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