From: Wu,Jiang (wujiang@xxxxxxxxx)
Date: Tue Oct 03 2000 - 05:06:13 GMT-3
Eddie,
Do Not Age! I do remember it this time.
On the ABRs, there are some type 5 LSAs and they have been advertised to the ba
ckbone. I found them on a backbone router. But what amaze me is I cannot see th
em in the routing table!
However, these type 5 LSAs are all advertised by ABRs (ADV Router in ospf datab
ase) and the link IDs are just a subset of those of type 7. All type 7 LSAs are
still type 7 on the ABRs. How can it happen?
I use three versions of IOS. If any one of them has some problem, could this ha
ppen? My IOS versions are:
ABR1: IOS (tm) C2600 Software (C2600-JS56I-M), Version 11.3(11a)T1,
ABR2: IOS (tm) C2600 Software (C2600-JOS56I-M), Version 12.0(3)T3,
NSSA ASBR: IOS (tm) L3 Switch/Router Software (CAT2948G-IN-M), Version 12.0(7)W
X5(15a)
-Wu
----- Original Message -----
From: Eddie Parra
To: Wu,Jiang
Cc: ccielab@groupstudy.com
Sent: Tuesday, October 03, 2000 11:52 AM
Subject: RE: OSPF NSSA External LSA
Wu,
DNA stands for "Do Not Age". You must be using a OSPF demand circuit some
where. If you look on your router where you are doing the redistribute you wil
l see your LSA's as type 7. But once it gets to the ABR it will convert them t
o type 5's. Try using the summary command on the ABR. I read two different Ci
sco docs that said two different things about the summary command when doing th
is. One said you must use the summary command to enable the type 7 to 5 transl
ation, and another said you didn't have to? If your ABR has them as type 5's a
nd is not advertising them, you might want to change the IOS. You might have a
software problem.
-Eddie
-----Original Message-----
From: Wu,Jiang [mailto:wujiang@bj163.com]
Sent: Monday, October 02, 2000 11:06 PM
To: Eddie Parra
Cc: ccielab@groupstudy.com
Subject: Re: OSPF NSSA External LSA
Eddie,
I have tried it, but it did not work. Unless I use explicit redistribution on N
SSA ABR, those routes cannot be seen on other routers outside the NSSA. Also I
can't see any output as type 7 LSA's as type 5 LSA's. May it be caused by my so
mewhat complex topology?
Another question, could you (or anyone else) tell me what the DNA means in the
following output?
r5#sh ip o d
OSPF Router with ID (172.31.5.5) (Process ID 100)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
172.31.2.2 172.31.2.2 401 0x80000006 0xFC6F 4
172.31.3.3 172.31.3.3 7 (DNA) 0x80000002 0x4BBF 3
172.31.5.5 172.31.5.5 51 0x80000004 0x85B4 2
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
172.16.30.0 172.31.3.3 2 (DNA) 0x80000003 0xE69D
172.16.30.0 172.31.5.5 1954 0x80000004 0xD4A9
172.16.56.0 172.31.3.3 2 (DNA) 0x80000001 0xC3AA
172.16.56.0 172.31.5.5 937 0x80000005 0x3D33
172.16.56.4 172.31.3.3 2 (DNA) 0x80000001 0x9BCE
172.16.56.4 172.31.5.5 1954 0x80000002 0x1B54
172.31.2.2 172.31.2.2 402 0x80000003 0x694
Router Link States (Area 3)
Link ID ADV Router Age Seq# Checksum Link count
172.31.3.3 172.31.3.3 387 0x80000004 0xEDCD 1
172.31.5.5 172.31.5.5 53 0x80000008 0x683C 3
172.31.6.6 172.31.6.6 1 (DNA) 0x8000000D 0xCEF0 4
Net Link States (Area 3)
Link ID ADV Router Age Seq# Checksum
172.16.30.6 172.31.6.6 58 0x80000003 0x319E
172.16.56.2 172.31.6.6 944 0x80000003 0x5E5A
Summary Net Link States (Area 3)
Link ID ADV Router Age Seq# Checksum
172.16.15.4 172.31.3.3 389 0x80000003 0xE28F
172.16.15.4 172.31.5.5 1956 0x80000002 0x68F6
172.16.235.0 172.31.3.3 389 0x80000003 0x506A
172.16.235.0 172.31.5.5 1183 0x80000002 0x255E
172.31.2.2 172.31.3.3 389 0x80000003 0xED80
172.31.2.2 172.31.5.5 1956 0x80000002 0x245B
Type-7 AS External Link States (Area 3)
Link ID ADV Router Age Seq# Checksum Tag
170.170.10.0 172.31.6.6 1058 0x80000004 0x4E9D 0
170.170.11.0 172.31.6.6 1058 0x80000004 0x43A7 0
170.170.12.0 172.31.6.6 1058 0x80000004 0x38B1 0
172.16.15.0 172.31.6.6 59 0x80000003 0xA980 0
172.16.15.4 172.31.3.3 390 0x80000003 0xE12 0
172.16.30.0 172.31.3.3 390 0x80000003 0xA26F 0
172.16.30.0 172.31.6.6 60 0x80000006 0x383F 0
172.16.56.0 172.31.6.6 1 (DNA) 0x80000001 0x1154 0
172.16.56.4 172.31.6.6 60 0x80000006 0xDE7D 0
172.16.235.0 172.31.3.3 390 0x80000003 0xCA79 0
172.16.235.0 172.31.6.6 60 0x80000003 0x3E0C 0
172.16.235.2 172.31.6.6 1 (DNA) 0x80000006 0x2421 0
172.16.235.3 172.31.6.6 1 (DNA) 0x80000006 0x1A2A 0
172.17.22.0 172.31.6.6 60 0x80000006 0x84F9 0
172.17.40.0 172.31.6.6 60 0x80000006 0xBDAE 0
172.31.1.1 172.31.6.6 60 0x80000003 0x978D 0
172.31.3.3 172.31.3.3 391 0x80000003 0xF921 0
172.31.4.4 172.31.6.6 1059 0x80000004 0xD89E 0
172.31.5.5 172.31.6.6 60 0x80000003 0x43D9 0
172.31.6.6 172.31.6.6 60 0x80000007 0x4E2B 0
192.168.0.0 172.31.6.6 1 (DNA) 0x80000008 0x2B59 0
192.168.1.0 172.31.6.6 1 (DNA) 0x80000008 0x2063 0
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
170.170.10.0 172.31.5.5 25 0x80000001 0xF505 0
170.170.11.0 172.31.5.5 25 0x80000001 0xEA0F 0
170.170.12.0 172.31.5.5 25 0x80000001 0xDF19 0
172.16.15.4 172.31.3.3 6 (DNA) 0x80000001 0x50B1 0
172.16.30.0 172.31.3.3 6 (DNA) 0x80000001 0xE40F 0
172.16.235.0 172.31.3.3 6 (DNA) 0x80000001 0xD19 0
172.31.3.3 172.31.3.3 6 (DNA) 0x80000001 0x3CC0 0
172.31.4.4 172.31.5.5 25 0x80000001 0x8006 0
172.31.6.6 172.31.5.5 25 0x80000001 0xFB8F 0
192.168.0.0 172.31.5.5 33 0x80000001 0xDABC 0
192.168.1.0 172.31.5.5 33 0x80000001 0xCFC6 0
r5#
----- Original Message -----
From: Eddie Parra
To: Wu,Jiang ; ccielab@groupstudy.com
Sent: Monday, October 02, 2000 11:09 PM
Subject: RE: OSPF NSSA External LSA
A OSPF NSSA does this by default when you are redistributing. Certain CCO docs
will tell you to use the summary command to control/enable this process, but i
t is not required. You might have some problems with certain revisions of code
. To make sure things are working do a "show ip ospf database" and you should
see the type 7 LSA's as type 5 LSA's.
-Eddie
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of Wu,Jiang
Sent: Monday, October 02, 2000 5:47 AM
To: ccielab@groupstudy.com
Subject: OSPF NSSA External LSA
I want to set the P-bit in type 7 LSA so that it can be translated into a type
5 LSA and flooded throughout the other areas. But I have not found the command(
s). Could anyone please tell me how to do that?
Thanks,
Jiang
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