INE WB Vol1 - 6.15 OSPF Demand Circuit

This feature is enabled with the interface level command ip ospf demand-
circuit, and is negotiated as part of the neighbor adjacency establishment. One side is sufficient.
The show command below output outlines the change in the adjacency between
R4 and R5 once the demand circuit feature is enabled.
Rack1R5#sh ip ospf int s0/1/0 | incl demand
  Configured as demand circuit.
  Run as demand circuit.
Rack1R5#

INE WB Vol1 - 6.14 OSPF Path Selection with Virtual-Links

6.14 OSPF Path Selection with Virtual-Links

Rack1R2#sh run | begin router
router ospf 1
router-id 150.1.2.2
log-adjacency-changes
auto-cost reference-bandwidth 30000
area 5 virtual-link 150.1.3.3
network 155.1.0.0 0.0.0.255 area 0
!
Rack1R2#sh ip ospf virtual-links
Virtual Link OSPF_VL2 to router 150.1.3.3 is down
  Run as demand circuit
  DoNotAge LSA allowed.
  Transit area 5, Cost of using 65535
  Transmit Delay is 1 sec, State DOWN,
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Rack1R2#sh ip ospf virtual-links
Virtual Link OSPF_VL2 to router 150.1.3.3 is down
  Run as demand circuit
  DoNotAge LSA allowed.
  Transit area 5, Cost of using 65535
  Transmit Delay is 1 sec, State DOWN,
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Rack1R2#sh ip ospf interface | incl Area
  Internet Address 155.1.0.2/24, Area 0
  Internet Address 0.0.0.0/0, Area 0
  Internet Address 150.1.2.2/24, Area 0
  Internet Address 155.1.23.2/24, Area 5
  Internet Address 192.10.1.2/24, Area 51
Rack1R2#sh run



Rack1R3#sh run | begin router
router ospf 1
router-id 150.1.3.3
log-adjacency-changes
auto-cost reference-bandwidth 30000
area 5 virtual-link 150.1.2.2
network 155.1.0.0 0.0.0.255 area 0
!
Rack1R3#sh ip ospf virtual-links
Virtual Link OSPF_VL1 to router 150.1.2.2 is up
  Run as demand circuit
  DoNotAge LSA allowed.
  Transit area 5, via interface Serial1/3, Cost of using 65535
  Transmit Delay is 1 sec, State POINT_TO_POINT,
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Hello due in 00:00:07
Rack1R3#
Rack1R3#sh ip ospf int | incl Area
  Internet Address 150.1.3.3/24, Area 0
  Internet Address 155.1.0.3/24, Area 0
  Internet Address 155.1.37.3/24, Area 2
  Internet Address 155.1.13.3/24, Area 4
  Internet Address 155.1.23.3/24, Area 5
Rack1R3#

Fucking Virtual Links !!!!!!!!!!!!!!!

INE WB Vol1 - 6.11 OSPF Path Selection with Per-Neighbor Cost

Rack1R4(config-if)#bandwidth 768
Rack1R4(config-if)#do sh ip ospf int s0/0/0 | incl Cost
  Process ID 1, Router ID 223.255.255.255, Network Type POINT_TO_MULTIPOINT, Cost: 39062
Rack1R4(config-if)#no bandwidth
Rack1R4(config-if)#router ospf 1

R5(config)#router ospf 1
R5(config-router)#neighbor cost 39062

...yeah

INE WB Vol1 - 5.22. EIGRP Filtering with Extended Access-Lists

Like RIP, extended access-lists when called as a distribute-list in IGP have a
different meaning than in redistribution or as in BGP. With BGP and
redistribution the “source” field in the ACL represents the network address, and
the “destination” field represents the subnet mask. In IGP distribute-list
application the “source” field in the ACL matches the update source of the route,
and the “destination” field represents the network address. This implementation
allows us to control which networks we are receiving, but more importantly who
we are receiving them from. Before the filter is applied, R5 routes as follows.

INE WB Vol1 - 5.17 EIGRP Stub Routing

Easy stuff.. just to remember
The EIGRP stub feature is used to limit the scope of EIGRP query messages,
and to limit what routes a neighbor advertises.

INE WB Vol1 - 5.15 EIGRP Unequal Cost Load Balancing

REVIEW !

Argh.... today another pass'er on the IPex*ert mailing list

GET YOUR FUC*ING ASS UP AND STUDY !!!! FOR THE FUCKING NUMBER