Some general very basic info on ISIS, level 1 is relative to intra area, whereas level 2 is relative to inter area... as it relates to ospf.
Task 6.1- General ISIS config- when configuring ISIS, start by using the NET command and then assign interfaces to the ISIS process with
ip router isis command under the interface
- the NET command includes the
area,
system ID, and
selector-byte, ie, net
51.0001.
000.c800.0001.
00- to prevent loopback interfaces from forming adjacencies use the
passive-interface command under the router process
Task 6.3 - ISIS Link auth
- ISIS Link authentication - under the interface use the command
isis password xxx level 2. Specifying
level 2 when the link is between 2 different areas
Task 6.4- ISIS Area auth
- SNP authentication/Area authentication is done under the router process
area-password xxx authenticate snp validate
Task 6.5 - TLVs
- New metric style is wide. Using "transition" will allow the router to accept the old metric style too.
Under the router process,
metric-style wide transition
Task 6.6 - timers
- adjust timers like Hello interval and multiplier under the interface.
Task 6.7 & 6.8 Redistribution
- when redistributing connected interfaces, create a route map to be as specific as possible, then redistribute,
redistribute connected route-map NAME level-1-2, the "level-1-2" specifies that it will be advertised through both level 1 and 2 routers.
- when redistributing static routes, create a route map to be as specific as possible, and you can set a metric on a specific route in order for it to be NOT advertised. Set the metric to the maximum to accomplish this in the route-map.
So ISIS is new to me and this lab was my first exposure to ISIS. Therefor, writing notes will help keep thing straight in my mind and for future reference.
