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router2differentareasauthentication [2009/09/13 14:37] (current)
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 +===IOS Version Information and Router Information===
 +===check out if we are DTE or DCE:===
 +
 +===our configuration:===
 +After Example 9-18
 +<code>
 +RT2(config)#interface serial 0/0
 +RT2(config-if)#is
 +RT2(config-if)#isis pass
 +RT2(config-if)#isis password isis
 +RT2(config-if)#exit
 +RT2(config)#
 +</code>
 +
 +===show & debugging:===
 +
 +After enabling IS-IS Authentication on a RT1 interface:
 +
 +debugging without configurate Authentication on RT2
 +<code>
 +RT2#debug isis adj-packets
 +02:03:38: ISIS-Adj: rcvd state DOWN, old state INIT, new state INIT
 +02:03:38: ISIS-Adj: Action = GOING UP, new type = L2
 +02:03:42: ISIS-Adj: Sending L2 LAN IIH on Loopback0, length 1514
 +02:03:44: ISIS-Adj: Sending L1 LAN IIH on Loopback0, length 1514
 +02:03:46: ISIS-Adj: Sending serial IIH on Serial0/0, length 1499
 +02:03:47: ISIS-Adj: Rec serial IIH from *PPP* (Serial0/0), cir type L1L2, cir id
 + 00, length 1499
 +</code>
 +
 +<code>
 +RT2#show clns neighbors
 +
 +System Id      Interface  SNPA                State  Holdtime  Type Protocol
 +RT1            Se0/0      *PPP*              Init  21        L2  IS-IS
 +RT2#
 +</code>
 +
 +<code>
 +RT1#show clns neighbors
 +
 +System Id      Interface  SNPA                State  Holdtime  Type Protocol
 +0000.0000.0002 Se0/0      *PPP*              Up    268      IS  ES-IS
 +RT1#
 +</code>
 +
 +After enabling IS-IS Authentication on a RT2 interface:
 +
 +<code>
 +02:12:47: ISIS-Adj: rcvd state UP, old state UP, new state UP
 +02:12:47: ISIS-Adj: Action = ACCEPT
 +02:12:48: ISIS-Adj: Sending L1 LAN IIH on Loopback0, length 1514
 +02:12:49: ISIS-Adj: Sending serial IIH on Serial0/0, length 1499
 +02:12:54: ISIS-Adj: Sending L2 LAN IIH on Loopback0, length 1514
 +02:12:55: ISIS-Adj: Sending L1 LAN IIH on Loopback0, length 1514
 +02:12:56: ISIS-Adj: Rec serial IIH from *PPP* (Serial0/0), cir type L1L2, cir id
 + 00, length 1499
 +</code>
 +
 +
 +
 +<code>
 +RT2#show clns neighbors
 +
 +System Id      Interface  SNPA                State  Holdtime  Type Protocol
 +RT1            Se0/0      *PPP*              Up    28        L2  IS-IS
 +RT2#
 +</code>
 +
 +<code>
 +RT1#show clns neighbors
 +
 +System Id      Interface  SNPA                State  Holdtime  Type Protocol
 +RT2            Se0/0      *PPP*              Up    25        L2  IS-IS
 +RT1#
 +</code>
 +
 +
 +
 +===check out if RT1 is reachable:===
 
router2differentareasauthentication.txt · Last modified: 2009/09/13 14:37 (external edit)
 
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