Archive for February, 2014

JNCIE-SP BGP trouble shooting

1. When to apply Next-hop self? Only on ASBR

2. which route should apply NHS? only EBGP routes

3. what will happen if RR (also ASBR) applied NHS without matching EBGP? Non-optional path

4. what is the best way to configure NHS? from protocol bgp; and from route-type external;

5 be careful of the reject term at the end of the policy

6. be careful if two RRs are not configured consistently, for example, enable no-client-reflect, enable local-preference, has some policy applied.

7. make sure the RR family is configured correctly. some families are not allowed to be configured together.

8. if BGP neighbor are not allowed to delete or add, and all neighbors should be up, then manipulate the bgp family to make sure correct bgp family based session are up

9. be aware of the bgp based apply-group, which reject all the bgp routes.

10. knows how to  configure bgp based aggregate, how to control the as-path

11. knows how to resolve the bgp next-hop issue. sometimes you need next-hop self, sometimes you need use another route-table for next-hop lookup, sometimes you just need a blackhole route.

12. knows how to use rib-group to control routes leaking between different routing table/instances.

13. to be continue

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JNCIE-SP –Aggregated Ethernet

1. the device-count must be greater than the AE bundle number; for example, if you are requested to configure ae10, you must configure the device-count to 11 or higher.

2. minimum-link feature: minimum links to make the AE up/up

3. link-protection feature: Active / Standby ; with or without LACP

4. AE with apply-group issue

 

5. AE with logic unit issue

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JNCIE-SP EXAM OBJECTIVES (EXAM: JPR-960)

This list is intended to provide a general view of the skill sets required to successfully complete the JNCIE-SP exam. Topics listed are subject to change.

  • Device Infrastructure
  • IGP
  • MPLS
  • BGP
  • VPNs
  • Multicast
  • CoS

Device Infrastructure

  • High Availability
    • Aggregated Ethernet, including fault detection
    • Graceful Restart
    • Graceful Routing Engine switchover
    • Nonstop Routing
    • VRRP
  • Automation Implementation
    • Scripts (OP/event/commit)
    • Archival
  • Secure and Monitor Junos Devices
    • Radius and local user accounts
    • Firewall filtering
    • Unicast reverse-path-forwarding
    • Syslog

IGP

  • Troubleshooting
    • Neighbor establishment
    • Routing loops
    • MTU mismatch
    • Authentication
    • Router IDs
    • IGP timers
  • Implementing
    • Configuration of IGPs (IS-IS and OSPF)
    • Router advertisement
    • Routing policy
    • IPv4 and IPv6 support
    • BFD
    • Loop-free alternate routes
    • Load balancing
    • Optimize timers
    • CSPF support

 

MPLS

  • Signaling protocols
    • RSVP
    • LDP tunneling
    • LDP IGP tracking
    • LDP policies
    • BFD
  • Path selection
    • Admin groups
    • Defining EROs
    • Bypass LSPs
    • Detour LSPs
  • Features
    • Load balancing
    • LSP selection using policy
    • Routing table manipulation
    • Optimization and auto bandwidth
    • TTL handling

BGP

  • Routing Policy
    • Communities
    • IPv4 and IPv6
    • 4-byte ASN
    • Load balancing
    • Remote-triggered black holes
  • Implementation
    • IBGP and EBGP
    • IPv4 and IPv6 peering communities
    • IPv6 tunneling
    • Authentication
    • 4-byte ASN
    • BFD
  • Scaling
    • Route reflection with IPv4, IPv6, and VPNs
    • Inet.3 and inet.6.3 route resolution

 

VPNs

  • Layer 3 VPNs
    • Hub and spoke
    • Multi-homed
    • IPv4 and IPv6
    • Internet access
    • Source of Origin
    • PE-CE Protocols (BGP, OSPF, RIP, or Static)
    • 6PE
    • Auto export, RIB groups
    • Label-switched interface
    • AS override
  • Layer 2 VPNs
    • VPLS (BGP and LDP)
    • VPLS multi-homing
    • Martini and Kompella
    • VPLS with a point-to-multipoint LSP
    • IRB
    • IGMP snooping for VPLS
    • Spanning tree for VPLS
    • VLAN normalization (push, pop, or swap)
    • Firewall filtering
  • Inter-AS VPNs
    • Interprovider
    • Carrier-of-carriers

Multicast

  • Implementation
    • Draft-rosen and NG MVPN
    • PIM sparse mode
    • Multicast scoping
    • MSDP
    • RP redundancy

CoS

  • Implementation
    • BA and MF classifiers
    • Rewrite rules
    • Drop profiles
    • Policers
    • Schedulers

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