© 2001, Cisco Systems, Inc. Ethernet over Multiprotocol Label Switching

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module 10-2 Objectives Upon completing this lesson, you will be able to: Configure EoMPLS on the 7600 Monitor and troubleshoot EoMPLS on the 7600 platform

Ethernet over MPLS © 2001, Cisco Systems, Inc. MPLS v1.0—5-3

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module 10-4 Service Provider Market Opportunity Positioning: Small businesses to Fortune 500 customers Private network “metro” requirements –Transparent LAN services –IP services Ease of provisioning

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module 10-5 Functional Characteristics EoMPLS provides service providers: Layer 2 and Layer 3 provisioning flexibility Function: –No Layer 2 destination MAC address lookup –No Layer 2 address learning Similar to Frame Relay: –VC-based FIB table prebuilt Originally based on Martini drafts Moving towards Vkompella draft

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module 10-6 EoMPLS Services It has per-customer dedicated physical ports. It has multiple EoMPLS VCs per physical port. EoMPLS VCs are point-to-point and based on Martini drafts. EoMPLS is moving towards point-to-multipoint, based on the Vkompella draft. Each EoMPLS VC traverses the same LSP. LER determines FEC, so other MPLS routers have no knowledge of the Layer 2 transport VCs.

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module 10-7 Technical Requirements Label imposition/disposition –Imposition: PE router that translates Layer 2 PDUs into MPLS labels –Disposition: PE router that translates MPLS labels to layer 2 PDUs

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module 10-8 Technical Requirements (cont.) CoS mapping –QOS based on 3-bit EXP field –EXP bits set in both tunnel VC and tunnel labels –Tunnel label popped at PHP router –Static EXP bits (CAR, MQC) –Dynamic EXP bits (IP Precedence, DSCP, 802.1q/802.1p)

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module 10-9 MPLS VC Setup PE1 starts a remote directed LDP session with PE2. PE1 allocates a local VC label and binds it to the VC ID configured under the ingress interface. P1P2P3 Company X PE2PE1 Targeted LDP Session

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module MPLS VC Setup (cont.) PE1 sends PE2 a label mapping message for the VC label. PE2 replies with label mapping message including VC label. The process is unidirectional. P1P2P3 Company X PE2PE1 VC Label Mapping 1 2

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module EoMPLS Configuration Tasks Mandatory: Define VLAN and Loopback interfaces Enable LDP discovery through targeted hellos Layer 2 transport routing command Optional: MPLS router ID (advisable) CoS to MPLS EXP mapping Targeted hello access list

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module EoMPLS Configuration Commands tag-switching ip Router(config-if)# Specify MPLS cloud ingress interface of PE to run MPLS. mpls label protocol ldp Router(config)# Specify PE router to run LDP (default operation is TDP).

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module EoMPLS Configuration Commands (cont.) Specify MPLS router ID. mpls ldp router-id loopback0 Router(config)# Configure PE router to accept a targeted LDP hello. mpls ldp discovery targeted-hello accept from vlan- edge-acl Router(config)#

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module EoMPLS Configuration Commands (cont.) Create a Level 2 transport host route to the destination PE. Level 2 transport is unidirectional. mpls l2transport route destination vc-id Router(config-if)#

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module mpls label protocol ldp ! interface Loopback0 ip address ! interface GigabitEthernet4/1 ip address no negotiation auto tag-switching ip ! interface Vlan25 no ip address mpls l2transport route ! interface Vlan60 no ip address mpls l2transport route ! EoMPLS Example

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module EoMPLS Show Commands show mpls l2transport [imposition | disposition] [detailed] [[ | ] ] router# Line card show commands Control plane show commands show mpls l2transport vc [detailed] [[ | ] ] router# show mpls l2transport summary

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module EoMPLS Debug Commands debug mpls l2transport vlan control router# debug mpls l2transport vlan distributed router# Debug control of traffic transported between Layer 2 VLAN and MPLS. Debug label imposition and disposition.

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module Any Transport over MPLS It provides the ability to transport Layer 2 traffic across packet networks. It is a scalable architecture based on label stacking—allows muxing of connections. A standards-based open architecture allows extensibility to many transport types.

© 2001, Cisco Systems, Inc. SPMAP v1.0—Module Summary After completing this lesson, you will be able to: Configure EoMPLS on the 7600 Monitor and troubleshoot EoMPLS on the 7600 platform