From: "Hoonpongsimanont
Date: Fri Oct 08 2004 - 10:07:55 GMT-3
Hi Folks,
I have a problem when trying to filter default route on ISIS Level 1 router.
R5 (L1) --- R7 (L1/L2)
On R5,
r5#show isis database
IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
r5.00-00 * 0x00000009 0xC158 661 0/0/0
r7.00-00 0x0000000F 0x8FC3 1192 1/0/0 <-
ATT Set to 1
r7.01-00 0x00000005 0x1E9A 660 0/0/0
r5#sh ip route isis
150.50.0.0/16 is variably subnetted, 19 subnets, 3 masks
i L1 150.50.60.0/24 [115/20] via 150.50.50.7, FastEthernet0/0
i ia 150.50.4.0/24 [115/158] via 150.50.50.7, FastEthernet0/0
i ia 150.50.8.8/32 [115/148] via 150.50.50.7, FastEthernet0/0
i L1 150.50.7.7/32 [115/10] via 150.50.50.7, FastEthernet0/0
i L1 150.50.101.0/30 [115/20] via 150.50.50.7, FastEthernet0/0
i*L1 0.0.0.0/0 [115/10] via 150.50.50.7, FastEthernet0/0
R7 Configuration
!
router isis
net 47.0007.7777.7777.7777.00
redistribute isis ip level-2 into level-1 distribute-list 100
passive-interface Loopback0
!
I don't want this default route to show up on R5. The only one way I found
is configuring hidden command "never-set-attached-bit" under router isis of
R7, and it's working fine.
R7 Configuration
!
router isis
net 47.0007.7777.7777.7777.00
never-set-attached-bit
redistribute isis ip level-2 into level-1 distribute-list 100
passive-interface Loopback0
!
On R5,
r5#show isis database
IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
r5.00-00 * 0x00000009 0xC158 431 0/0/0
r7.00-00 0x00000010 0x85D4 1153 0/0/0 <-
ATT Set to 0
r7.01-00 0x00000006 0x1C9B 1166 0/0/0
r5#show ip route isis
150.50.0.0/16 is variably subnetted, 19 subnets, 3 masks
i L1 150.50.60.0/24 [115/20] via 150.50.50.7, FastEthernet0/0
i ia 150.50.4.0/24 [115/158] via 150.50.50.7, FastEthernet0/0
i ia 150.50.8.8/32 [115/148] via 150.50.50.7, FastEthernet0/0
i L1 150.50.7.7/32 [115/10] via 150.50.50.7, FastEthernet0/0
i L1 150.50.101.0/30 [115/20] via 150.50.50.7, FastEthernet0/0
<- Default route is gone ->
I don't think I will get the point when using hidden command in real lab. Is
there any other way to do this kind of thing? Thanks in advance.
Cheers,
David
This archive was generated by hypermail 2.1.4 : Sat Nov 06 2004 - 17:11:44 GMT-3