642-889 SPEDGE Implementing Cisco Service Provider Next-Generation Edge Network Services

Exam Number 642-889 SPEDGE
Associated Certifications CCNP Service Provider
Duration 90 minutes (65 – 75 questions)
Available Languages English
Register Pearson VUE

The 642-889 SPEDGE Implementing Cisco Service Provider Next-Generation Edge Network Services tests a candidate’s knowledge of service provider VPN solutions through enabling point of presence to provide Layer 2 and Layer 3 VPNs. This exam covers the Cisco IOS, IOS XE and IOS XR operating systems. Candidates can prepare for this exam by taking the Implementing Cisco Service Provider Next-Generation Edge Network Services (SPEDGE) course.

The 642-889 SPEDGE Implementing Cisco Service Provider Next-Generation Edge Network Services exam is associated with the CCNP® Service Provider certification. This 90-minute, 65−75 questions exam tests a candidate’s knowledge on the concepts and implementation of VPN solutions from the Service Providers perspective, including simple and complex layer 3 MPLS VPNs, CSC, 6VPE, and layer 2 VPNs such as AToM and VPLS. This exam covers the Cisco IOS, IOS-XE and IOS-XR operating systems. Candidates can prepare for this exam by taking the Implementing Cisco Service Provider Next Generation Edge Network Services (SPEDGE) course. The exam is closed book and no outside reference materials are allowed.

The following topics are general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.

1.0 VPN in Service Provider IP NGN Environments 15%

1.1 Describe VPN implementation models (overlay, peer-to-peer)

1.2 Describe VPN technologies (L2TPv3, GRE, IPsec VPN, SSLVPN, DMVPN, GETVPN)

1.3 Describe L2 vs L3 VPNs

2.0 MPLS layer 3 VPNs in Service Provider IP NGN Environments 40%

2.1 Describe MPLS L3 VPN architecture and operations (RDs, RTs, VRFs, MP-BGP, PE-CE routing)

2.2 Describe the design models for combining Internet access with MPLS L3 VPN services

2.3 Describe the various methods used to deploy IPv6 over MPLS (6PE and 6VPE)

2.4 Implement MP-BGP between PE routers on IOS-XR and IOS-XE

2.5 Implement PE-CE routings (static, EIGRP, OSPF, BGP) on IOS-XR and IOS-XE

2.6 Implement complex MPLS layer 3 VPNs on IOS-XR and IOS-XE

2.7 Implement carrier supporting carrier (CSC) on IOS-XR and IOS-XE

2.8 Troubleshoot MPLS L3 VPNs IOS-XR and IOS-XE configuration errors in service provider environments

3.0 Layer 2 VPNs in Service Provider IP NGN Environments 19%

3.1 Describe L2TPv3 VPNs over an IP core network

3.2 Describe L2 VPNs (AToM and VPLS) over an IP/MPLS core network

3.3 Describe AToM Interworking

3.4 Implement AToM on IOS-XR and IOS-XE

4.0 Carrier Ethernet in Service Provider IP NGN Environments 26%

4.1 Describe Carrier Ethernet forums and standards (MEF, IEEE, IETF)

4.2 Describe the concepts of User PE (U-PE) and Network PE (N-PE)

4.3 Describe E-Line versus E-LAN versus E-Tree

4.4 Describe QinQ tunneling

4.5 Describe Provider Backbone Bridge (PBB – aka MAC-in-MAC)

4.6 Describe VPWS versus VPLS

4.7 Describe VPLS versus H-VPLS

4.8 Describe VPLS signaling using LDP or BGP

4.9 Implement QinQ on Cisco ME 3400 Series Switches

4.10 Implement VPLS on IOS-XR and IOS-XE

QUESTION 1
Which MP-BGP address family must be configured to use VPLS autodiscovery in a Cisco IOS XR
router?

A. address-family l2vpn vpls-vpws
B. address-family vpnv4 unicast
C. address-family ipv4 mdt
D. address-family ipv4 tunnel
E. address-family vpls vfi

Answer: A

Explanation:
http://www.cisco.com/en/US/docs/ios/12_2sr/12_2srb/feature/guide/srbgpl2v.html


QUESTION 2
In MPLS Layer 3 VPN implementations, what is used on the PE router to isolate potential
overlapping routing information between different customers?

A. route targets
B. VRFs
C. VC IDs
D. pseudowire IDs
E. pseudowire classes

Answer: B

Explanation:


QUESTION 3
Within the service provider IP/MPLS core network, what must be implemented to enable Layer 3
MPLS VPN services?

A. IS-IS or OSPF on all the PE and P routers
B. MP-BGP between the PE routers
C. RSVP on all the PE and P routers
D. targeted LDP between the PE routers
E. LDP between the CE and PE routers

Answer: B

Explanation:


QUESTION 4
In MPLS Layer 3 VPN implementations, which mechanism is used to control which routes are
imported to a VRF?

A. RT
B. RD
C. VC ID
D. PW ID
E. VRF ID

Answer: A

Explanation:
http://blog.initialdraft.com/archives/1537/


QUESTION 5
Which two statements regarding Cisco 6PE operations are correct? (Choose two.)

A. The top label in the label stack is assigned by MP-BGP, and it is used to reach the egress PE.
B. The inner label in the label stack is assigned by MP-BGP, and it is used for IPv6 forwarding at
the egress PE.
C. The top label in the label stack is assigned by LDP, and it is used to reach the egress PE.
D. The inner label in the label stack is assigned by LDP, and it is used for IPv6 forwarding at the
egress PE.

Answer: B,C

Explanation:
http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6553/prod_presentation0900aecd8
0311df4.pdf


QUESTION 6
Which Cisco IOS XR BGP configuration command is required to enable MP-BGP to carry IPv6
VPN routes?

A. address-family ipv4 unicast
B. address-family ipv6 unicast
C. address-family vpnv4 unicast
D. address-family vpnv6 unicast

Answer: D

Explanation:
http://www.cisco.com/en/US/tech/ CK8 72/technologies_configuration_example09186a0080b3e11d.shtml

 

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