CCNP TSHOOT CHAPTER 10(POLICY BASED ROUTING & GRE)

CCNP TSHOOT CHAPTER 10(POLICY BASED ROUTING & GRE)
19. What is PBR ?
20. What are verification steps of PBR ?
21. What are the troubleshooting steps of GRE ?
--->
Solution:
19. What is PBR ?
PBR is feature for transit router:
local PBR , can be used for local policy based router.
set ip next-hop will set the next hop with respect to
route-map not with respect to routing table.

20. What are verification steps of PBR ?
Let us see the output:
R1#sh route-map
route-map POL, permit, sequence 10
  Match clauses:
    ip address (access-lists): f2221
  Set clauses:
    ip next-hop 10.1.13.3
  Policy routing matches: 3 packets, 96 bytes
route-map POL, permit, sequence 20
  Match clauses:
    ip address (access-lists): f2222
  Set clauses:
    ip next-hop 10.1.14.4
  Policy routing matches: 27 packets, 864 bytes

  ---->
1.may be wrong acess-list :
2.wrong route-map
3.wrong next-hop or wrong next interface:

21. What are the troubleshooting steps of GRE ?
-->
1. Incorrect configuration.
2. No route to tunnel destination.
3. Interface source of tunnel is down.
4. Route to tunnel destination is through tunnel.
5. Other challenges : MTU, Fragmentation, Qos.