Juniper IS-IS summary

1. #####################################################################################################
2. ## ISIS
3. #####################################################################################################
5. # Be sure to set family iso on the interface to be placed into ISIS
6. set interfaces <interface> family iso
8. # By default Junos places interfaces as L1/L2
10. # Default route leaking:
11.         L1 to L2 - all internal routes
12.         L2 to L1 - 0/0 route
14. # L1/L2 will send the attached-bit down to L1 and it will act as a NSSA-like area.  When the L1 interface
15. # receives the attached-bit it will inject a 0/0 route into the RIB point to the L1/L2 interface.
16. # To disable the attached bit use:
17. set protocols isis ignore-attached-bit
19. # Be careful with the "interface all" command, as it may have some unexpected consequences such as trying
20. # to establish a neighbor on your fxp0 management interface.  Use explicit interface names.  If you must
21. # use the "interface all" command, remember that if you also define another explicit interface such as
22. # "interface ge-0/0/0.0 <options>" that it _doesn't_ inherit the "interface all" options.
24. # ALWAYS include the interface lo0.0
26. # L2 backbone must be contiguous.
28. # Human-readable hostnames via TLV 137.  Good to quickly verify that the router has the proper adjcancies .
29. show isis hostname
31. # Set LSP authentication (per area knob)
32. set protocols isis level <level> authentication-type (simple|md5)
33. set protocols isis level <level> authentication-key <key>
35. # Set hello authentication (per interface knob)
36. set protocols isis interface <interface> hello-authentication-type (simple|md5)
37. set protocols isis interface <interface> hello-authentication-key <key>
39. # Set lsp-interval
40. set interfaces ge-0/0/0.0 lsp-interval <milliseconds>
42. # L2 to L1 route summarization
43. ## set aggregate route in routing-options
44. set routing-options aggregate route 10/8
45. ## set policy-options - what prefix to match
46. set policy-options policy-statement isis-export term 1 from protocol aggregate route-filter 10/8 exact
47. ## set policy-options - what level to go _to_
48. set policy-options policy-statement isis-export term 1 to level 1
49. ## set action
50. set policy-options policy-statement isis-export term 1 then accept
52. # L1 to L2 route summarization
53. ## set aggregate route in routing-options
54. set routing-optiong aggregate route 10/8
55. ## set policy-options
56. ### match exact route
57. set policy-options policy-statement isis-export term 1 from protocol aggregate router-filter 10/8 exact
58. ## set policy-options - what level to go _to_
59. set policy-options policy-statement isis-export term 1 to level 2
60. ## set action
61. set policy-options policy-statement isis-export term 1 then accept
62. ### suppress more specific routes (to prevent advertisements of both aggregate and more specific routes)
63. set policy-options policy-statement isis-export term 2 from protocol isis
64. set policy-options policy-statement isis-export term 2 from level 1
65. set policy-options policy-statement isis-export term 2 to level 2
66. ## set action
67. set policy-options policy-statement isis-export term 2 then reject
69. # Verify that a route is internal or external
70. show route protocol isis <prefix> exact
71. show isis database <sysid> detail
73. # When using wide-metrics-only it makes the route internal.  When there is a situtation where the L1 routers
74. # are wide-metrics-only and are exporting external routes into the L1 area, they will appear as internal
75. # routes.  Also if there are any L1/L2 routers in the area that exported prefix will be automatically
76. # redistributed from L1 into L2 because it's showing as an internal route.  If narrow-metrics were used, the
77. # L1/L2 routers would have to have an export policy to redistributed the prefix from L1 to L2.
79. # Set DIS priority
80. set protocols isis interface <interface> level <level> priority <level>
81. ## Remember that the highest MAC address is the tie-breaker if the priorities are equal
82. ## view current DIS
83. show isis interface