From: rnasr (rnasr@s2n.com.au)
Date: Mon Dec 01 2003 - 11:58:27 GMT-3
While we are on the subject - is there a good white paper anywhere for
ISIS - or a good tutorial.
Thanks, rjn.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Ken.Farrington@barclayscapital.com
Sent: Tuesday, December 02, 2003 10:55 PM
To: eward15@juno.com; msnyder@revolutioncomputer.com
Cc: ccielab@groupstudy.com; rsg@synergy-networking.co.uk
Subject: RE: Silly ISIS Question.
I just tested this and yes it does create a default static into the area
that is LEVEL-1 ONLY
Please let me know if you require any other help.
Area 49.1112 | Area 49.1111
|
|
+----+ | +----+
|75a |---------|----------|65a |
+----+ | +----+
| | |
| | |
| | |
+----+ | +----+
|75b | | |65b |
+----+ | +----+
|
|
|
65b
!
router isis
net 49.1111.2222.2222.2222.00
!
Loopback200 192.168.1.1 YES manual up
up
Loopback201 192.168.2.1 YES manual up
up
Loopback500 10.1.1.1 YES manual up
up
Loopback501 10.1.2.1 YES manual up
up
Loopback900 90.0.0.1 YES manual up
up
Loopback902 90.0.2.1 YES manual up
up
Loopback903 90.0.3.1 YES manual up
up
65a
!
router isis
net 49.1111.1111.1111.1111.00
!
Loopback11 11.0.0.1 YES NVRAM up
up
Loopback12 11.0.1.1 YES NVRAM up
up
Loopback13 11.0.2.1 YES NVRAM up
up
Loopback14 11.0.3.1 YES NVRAM up
up
Loopback902 92.0.0.1 YES manual up
up
Loopback903 92.0.1.1 YES manual up
up
75a
!
router isis
net 49.1112.3333.3333.3333.00
!
Loopback301 93.1.1.1 YES manual up up
Loopback302 93.1.2.1 YES manual up up
Loopback303 93.1.3.1 YES manual up up
75b
!
router isis
net 49.1112.4444.4444.4444.00
!
Loopback500 96.1.1.1 YES manual up up
Loopback502 96.1.2.1 YES manual up up
Loopback503 96.1.3.1 YES manual up up
With no change in the ISIS circuit type, ie running L1L2 everywhere
IP routing and ISIS databases are as follows :-
65b
!
MMmR02>sh ip route isis
96.0.0.0/24 is subnetted, 3 subnets
i L2 96.1.1.0 [115/40] via 30.96.100.61, Vlan10
i L2 96.1.3.0 [115/40] via 30.96.100.61, Vlan10
i L2 96.1.2.0 [115/40] via 30.96.100.61, Vlan10
93.0.0.0/24 is subnetted, 3 subnets
i L2 93.1.1.0 [115/30] via 30.96.100.61, Vlan10
i L2 93.1.2.0 [115/30] via 30.96.100.61, Vlan10
i L2 93.1.3.0 [115/30] via 30.96.100.61, Vlan10
92.0.0.0/24 is subnetted, 2 subnets
i L1 92.0.0.0 [115/20] via 30.96.100.61, Vlan10
i L1 92.0.1.0 [115/20] via 30.96.100.61, Vlan10
95.0.0.0/24 is subnetted, 1 subnets
i L2 95.1.1.0 [115/30] via 30.96.100.61, Vlan10
11.0.0.0/24 is subnetted, 4 subnets
i L1 11.0.3.0 [115/20] via 30.96.100.61, Vlan10
i L1 11.0.2.0 [115/20] via 30.96.100.61, Vlan10
i L1 11.0.1.0 [115/20] via 30.96.100.61, Vlan10
i L1 11.0.0.0 [115/20] via 30.96.100.61, Vlan10
MMmR02>
MMmR02> sh isis d
IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 0x0000009D 0x0B05 987 1/0/0
MMmR02.00-00 * 0x00000073 0xCA90 922 1/0/0
MMmR02.01-00 * 0x0000006F 0x499E 1037 0/0/0
IS-IS Level-2 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 0x00000094 0xF4F2 790 0/0/0
MMmR02.00-00 * 0x00000070 0x5016 534 0/0/0
MMmR02.01-00 * 0x0000000D 0x9D35 735 0/0/0
R7500-1.00-00 0x000000B0 0x8530 798 0/0/0
R7500-1.01-00 0x00000073 0x3768 806 0/0/0
R7500-1.05-00 0x0000000C 0xE9E5 820 0/0/0
5NC_WAN_2.00-00 0x000000A0 0x6F8A 823 0/0/0
65a
!
MMmR01#sh ip route isis
96.0.0.0/24 is subnetted, 3 subnets
i L2 96.1.1.0 [115/30] via 30.96.100.66, Vlan20
i L2 96.1.3.0 [115/30] via 30.96.100.66, Vlan20
i L2 96.1.2.0 [115/30] via 30.96.100.66, Vlan20
93.0.0.0/24 is subnetted, 3 subnets
i L2 93.1.1.0 [115/20] via 30.96.100.66, Vlan20
i L2 93.1.2.0 [115/20] via 30.96.100.66, Vlan20
i L2 93.1.3.0 [115/20] via 30.96.100.66, Vlan20
10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks
i L1 10.1.2.0/24 [115/20] via 30.96.100.62, Vlan10
i L1 10.1.1.0/24 [115/20] via 30.96.100.62, Vlan10
95.0.0.0/24 is subnetted, 1 subnets
i L2 95.1.1.0 [115/20] via 30.96.100.66, Vlan20
i L1 192.168.1.0/24 [115/20] via 30.96.100.62, Vlan10
i L1 192.168.2.0/24 [115/20] via 30.96.100.62, Vlan10
90.0.0.0/24 is subnetted, 3 subnets
i L1 90.0.2.0 [115/20] via 30.96.100.62, Vlan10
i L1 90.0.3.0 [115/20] via 30.96.100.62, Vlan10
i L1 90.0.0.0 [115/20] via 30.96.100.62, Vlan10
MMmR01# sh isis d
IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 * 0x0000009D 0x0B05 905 1/0/0
MMmR02.00-00 0x00000073 0xCA90 835 1/0/0
MMmR02.01-00 0x0000006F 0x499E 951 0/0/0
IS-IS Level-2 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 * 0x00000094 0xF4F2 707 0/0/0
MMmR02.00-00 0x00000070 0x5016 448 0/0/0
MMmR02.01-00 0x0000000D 0x9D35 648 0/0/0
R7500-1.00-00 0x000000B0 0x8530 715 0/0/0
R7500-1.01-00 0x00000073 0x3768 723 0/0/0
R7500-1.05-00 0x0000000C 0xE9E5 738 0/0/0
5NC_WAN_2.00-00 0x000000A0 0x6F8A 741 0/0/0
MMmR01#
75a
!
R7500-1#sh ip route isis
i L2 200.1.1.0/24 [115/20] via 30.96.100.93, FastEthernet1/1
96.0.0.0/24 is subnetted, 3 subnets
i L1 96.1.1.0 [115/20] via 95.1.1.2, FastEthernet4/0
i L1 96.1.3.0 [115/20] via 95.1.1.2, FastEthernet4/0
i L1 96.1.2.0 [115/20] via 95.1.1.2, FastEthernet4/0
92.0.0.0/24 is subnetted, 2 subnets
i L2 92.0.0.0 [115/20] via 30.96.100.93, FastEthernet1/1
i L2 92.0.1.0 [115/20] via 30.96.100.93, FastEthernet1/1
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
i L2 10.1.2.0/24 [115/30] via 30.96.100.93, FastEthernet1/1
i L2 10.1.1.0/24 [115/30] via 30.96.100.93, FastEthernet1/1
11.0.0.0/24 is subnetted, 4 subnets
i L2 11.0.3.0 [115/20] via 30.96.100.93, FastEthernet1/1
i L2 11.0.2.0 [115/20] via 30.96.100.93, FastEthernet1/1
i L2 11.0.1.0 [115/20] via 30.96.100.93, FastEthernet1/1
i L2 11.0.0.0 [115/20] via 30.96.100.93, FastEthernet1/1
i L2 192.168.2.0/24 [115/30] via 30.96.100.93, FastEthernet1/1
90.0.0.0/24 is subnetted, 3 subnets
i L2 90.0.2.0 [115/30] via 30.96.100.93, FastEthernet1/1
i L2 90.0.3.0 [115/30] via 30.96.100.93, FastEthernet1/1
i L2 90.0.0.0 [115/30] via 30.96.100.93, FastEthernet1/1
R7500-1# sh isis d
IS-IS Level-1 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
R7500-1.00-00 * 0x000000A8 0x2669 789 1/0/0
R7500-1.05-00 * 0x00000067 0xA348 718 0/0/0
5NC_WAN_2.00-00 0x00000096 0xCDD9 829 1/0/0
IS-IS Level-2 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 0x00000094 0xF4F2 641 0/0/0
MMmR02.00-00 0x00000070 0x5016 382 0/0/0
MMmR02.01-00 0x0000000D 0x9D35 583 0/0/0
R7500-1.00-00 * 0x000000B0 0x8530 653 0/0/0
R7500-1.01-00 * 0x00000073 0x3768 661 0/0/0
R7500-1.05-00 * 0x0000000C 0xE9E5 676 0/0/0
5NC_WAN_2.00-00 0x000000A0 0x6F8A 679 0/0/0
R7500-1#
75b
5NC_WAN_2#sh ip route isis
i L2 200.1.1.0/24 [115/30] via 95.1.1.1, FastEthernet1/0
93.0.0.0/24 is subnetted, 3 subnets
i L1 93.1.1.0 [115/20] via 95.1.1.1, FastEthernet1/0
i L1 93.1.2.0 [115/20] via 95.1.1.1, FastEthernet1/0
i L1 93.1.3.0 [115/20] via 95.1.1.1, FastEthernet1/0
92.0.0.0/24 is subnetted, 2 subnets
i L2 92.0.0.0 [115/30] via 95.1.1.1, FastEthernet1/0
i L2 92.0.1.0 [115/30] via 95.1.1.1, FastEthernet1/0
10.0.0.0/24 is subnetted, 2 subnets
i L2 10.1.2.0 [115/40] via 95.1.1.1, FastEthernet1/0
i L2 10.1.1.0 [115/40] via 95.1.1.1, FastEthernet1/0
11.0.0.0/24 is subnetted, 4 subnets
i L2 11.0.3.0 [115/30] via 95.1.1.1, FastEthernet1/0
i L2 11.0.2.0 [115/30] via 95.1.1.1, FastEthernet1/0
i L2 11.0.1.0 [115/30] via 95.1.1.1, FastEthernet1/0
i L2 11.0.0.0 [115/30] via 95.1.1.1, FastEthernet1/0
i L2 192.168.1.0/24 [115/40] via 95.1.1.1, FastEthernet1/0
i L2 192.168.2.0/24 [115/40] via 95.1.1.1, FastEthernet1/0
90.0.0.0/24 is subnetted, 3 subnets
i L2 90.0.2.0 [115/40] via 95.1.1.1, FastEthernet1/0
i L2 90.0.3.0 [115/40] via 95.1.1.1, FastEthernet1/0
i L2 90.0.0.0 [115/40] via 95.1.1.1, FastEthernet1/0
30.0.0.0/8 is variably subnetted, 10 subnets, 5 masks
i L2 30.96.100.32/27 [115/30] via 95.1.1.1, FastEthernet1/0
i L1 30.96.100.64/27 [115/20] via 95.1.1.1, FastEthernet1/0
5NC_WAN_2# sh isis d
IS-IS Level-1 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
R7500-1.00-00 0x000000A8 0x2669 715 1/0/0
R7500-1.05-00 0x00000067 0xA348 644 0/0/0
5NC_WAN_2.00-00 * 0x00000096 0xCDD9 760 1/0/0
IS-IS Level-2 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 0x00000094 0xF4F2 568 0/0/0
MMmR02.00-00 0x00000071 0x4E17 1159 0/0/0
MMmR02.01-00 0x0000000D 0x9D35 509 0/0/0
R7500-1.00-00 0x000000B0 0x8530 580 0/0/0
R7500-1.01-00 0x00000073 0x3768 588 0/0/0
R7500-1.05-00 0x0000000C 0xE9E5 603 0/0/0
5NC_WAN_2.00-00 * 0x000000A0 0x6F8A 610 0/0/0
5NC_WAN_2#
Now when you change the 65b and 75b routers to L1 only isis circuit types,
you should then see the
default routes advertised into that area.
75b
!
5NC_WAN_2#sh ip route isis
93.0.0.0/24 is subnetted, 3 subnets
i L1 93.1.1.0 [115/20] via 95.1.1.1, FastEthernet1/0
i L1 93.1.2.0 [115/20] via 95.1.1.1, FastEthernet1/0
i L1 93.1.3.0 [115/20] via 95.1.1.1, FastEthernet1/0
30.0.0.0/8 is variably subnetted, 9 subnets, 5 masks
i L1 30.96.100.64/27 [115/20] via 95.1.1.1, FastEthernet1/0
i*L1 0.0.0.0/0 [115/10] via 95.1.1.1, FastEthernet1/0
5NC_WAN_2#sh isis data
IS-IS Level-1 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
R7500-1.00-00 0x000000A8 0x2669 574 1/0/0
R7500-1.05-00 0x00000067 0xA348 503 0/0/0
5NC_WAN_2.00-00 * 0x00000099 0xBFEC 1165 0/0/0
IS-IS Level-2 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 0x00000094 0xF4F2 426 0/0/0
MMmR02.00-00 0x00000071 0x4E17 1018 0/0/0
MMmR02.01-00 0x0000000E 0x9B36 1056 0/0/0
R7500-1.00-00 0x000000B0 0x8530 439 0/0/0
R7500-1.01-00 0x00000073 0x3768 446 0/0/0
R7500-1.05-00 0x0000000C 0xE9E5 461 0/0/0
5NC_WAN_2.00-00 * 0x000000A3 0x7F46 1166 0/0/0
5NC_WAN_2#
65b
!
MMmR02#sh ip route isis
92.0.0.0/24 is subnetted, 2 subnets
i L1 92.0.0.0 [115/20] via 30.96.100.61, Vlan10
i L1 92.0.1.0 [115/20] via 30.96.100.61, Vlan10
11.0.0.0/24 is subnetted, 4 subnets
i L1 11.0.3.0 [115/20] via 30.96.100.61, Vlan10
i L1 11.0.2.0 [115/20] via 30.96.100.61, Vlan10
i L1 11.0.1.0 [115/20] via 30.96.100.61, Vlan10
i L1 11.0.0.0 [115/20] via 30.96.100.61, Vlan10
i*L1 0.0.0.0/0 [115/10] via 30.96.100.61, Vlan10
MMmR02#sh isis d
IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 0x0000009F 0x0707 1122 1/0/0
MMmR02.00-00 * 0x00000074 0xC0A1 1172 0/0/0
MMmR02.01-00 * 0x00000072 0x43A1 1172 0/0/0
IS-IS Level-2 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR02.00-00 * 0x00000002 0xB26C 1181 0/0/0
MMmR02#
and the inter-area routers :-
65a
!
MMmR01#sh ip route isis
96.0.0.0/24 is subnetted, 3 subnets
i L2 96.1.1.0 [115/30] via 30.96.100.66, Vlan20
i L2 96.1.3.0 [115/30] via 30.96.100.66, Vlan20
i L2 96.1.2.0 [115/30] via 30.96.100.66, Vlan20
93.0.0.0/24 is subnetted, 3 subnets
i L2 93.1.1.0 [115/20] via 30.96.100.66, Vlan20
i L2 93.1.2.0 [115/20] via 30.96.100.66, Vlan20
i L2 93.1.3.0 [115/20] via 30.96.100.66, Vlan20
10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks
i L1 10.1.2.0/24 [115/20] via 30.96.100.62, Vlan10
i L1 10.1.1.0/24 [115/20] via 30.96.100.62, Vlan10
95.0.0.0/24 is subnetted, 1 subnets
i L2 95.1.1.0 [115/20] via 30.96.100.66, Vlan20
i L1 192.168.1.0/24 [115/20] via 30.96.100.62, Vlan10
i L1 192.168.2.0/24 [115/20] via 30.96.100.62, Vlan10
90.0.0.0/24 is subnetted, 3 subnets
i L1 90.0.2.0 [115/20] via 30.96.100.62, Vlan10
i L1 90.0.3.0 [115/20] via 30.96.100.62, Vlan10
i L1 90.0.0.0 [115/20] via 30.96.100.62, Vlan10
MMmR01#sh isis d
IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 * 0x0000009F 0x0707 1061 1/0/0
MMmR02.00-00 0x00000074 0xC0A1 1107 0/0/0
MMmR02.01-00 0x00000072 0x43A1 1107 0/0/0
IS-IS Level-2 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 * 0x00000098 0x173B 1066 0/0/0
MMmR02.00-00 0x00000071 0x4E17 831 0/0/0
MMmR02.01-00 0x0000000E 0x9B36 869 0/0/0
R7500-1.00-00 0x000000B1 0x8331 974 0/0/0
R7500-1.01-00 0x00000074 0x3569 1109 0/0/0
R7500-1.05-00 0x0000000D 0xE7E6 1020 0/0/0
5NC_WAN_2.00-00 0x000000A0 0x6F8A 273 0/0/0
MMmR01#
75a
!
R7500-1>sh ip route isis
i L2 200.1.1.0/24 [115/20] via 30.96.100.93, FastEthernet1/1
96.0.0.0/24 is subnetted, 3 subnets
i L1 96.1.1.0 [115/20] via 95.1.1.2, FastEthernet4/0
i L1 96.1.3.0 [115/20] via 95.1.1.2, FastEthernet4/0
i L1 96.1.2.0 [115/20] via 95.1.1.2, FastEthernet4/0
92.0.0.0/24 is subnetted, 2 subnets
i L2 92.0.0.0 [115/20] via 30.96.100.93, FastEthernet1/1
i L2 92.0.1.0 [115/20] via 30.96.100.93, FastEthernet1/1
10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
i L2 10.1.2.0/24 [115/30] via 30.96.100.93, FastEthernet1/1
i L2 10.1.1.0/24 [115/30] via 30.96.100.93, FastEthernet1/1
11.0.0.0/24 is subnetted, 4 subnets
i L2 11.0.3.0 [115/20] via 30.96.100.93, FastEthernet1/1
i L2 11.0.2.0 [115/20] via 30.96.100.93, FastEthernet1/1
i L2 11.0.1.0 [115/20] via 30.96.100.93, FastEthernet1/1
i L2 11.0.0.0 [115/20] via 30.96.100.93, FastEthernet1/1
i L2 192.168.2.0/24 [115/30] via 30.96.100.93, FastEthernet1/1
90.0.0.0/24 is subnetted, 3 subnets
i L2 90.0.2.0 [115/30] via 30.96.100.93, FastEthernet1/1
i L2 90.0.3.0 [115/30] via 30.96.100.93, FastEthernet1/1
i L2 90.0.0.0 [115/30] via 30.96.100.93, FastEthernet1/1
R7500-1> sh isis d
IS-IS Level-1 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
R7500-1.00-00 * 0x000000A8 0x2669 350 1/0/0
R7500-1.05-00 * 0x00000068 0xA149 1091 0/0/0
5NC_WAN_2.00-00 0x00000099 0xBFEC 937 0/0/0
IS-IS Level-2 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
MMmR01.00-00 0x00000098 0x173B 1029 0/0/0
MMmR02.00-00 0x00000071 0x4E17 793 0/0/0
MMmR02.01-00 0x0000000E 0x9B36 831 0/0/0
R7500-1.00-00 * 0x000000B1 0x8331 940 0/0/0
R7500-1.01-00 * 0x00000074 0x3569 1075 0/0/0
R7500-1.05-00 * 0x0000000D 0xE7E6 987 0/0/0
5NC_WAN_2.00-00 0x000000A0 0x6F8A 240 0/0/0
R7500-1>
-----Original Message-----
From: eward15@juno.com [mailto:eward15@juno.com]
Sent: 01 December 2003 12:01
To: msnyder@revolutioncomputer.com
Cc: ccielab@groupstudy.com; rsg@synergy-networking.co.uk
Subject: RE: Silly ISIS Question.
Michael,
Would the fact that you only had a single area prohibit you from seeing the
attached bit set? Try using multiple areas. Also, try degenerating a
default route on an L2 router in a different area.
Eugene Ward
This archive was generated by hypermail 2.1.4 : Sat Jan 03 2004 - 08:25:34 GMT-3