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- Newsgroups: comp.dcom.sys.cisco
- Path: sparky!uunet!boulder!recnews
- From: Richard Letts <R.J.Letts@salford.ac.uk>
- Subject: Routing Bug - cisco or Novell or 3com ?
- Message-ID: <726338122.1466@news.Colorado.EDU>
- Sender: news
- Date: 6 Jan 93 14:32:15 GMT
- Approved: news
- X-Mailer: ELM [version 2.3 PL11]
- X-Note1: message-id generated by recnews
- X-Note2: mail msgid was <199301061432.AA16790@spot.Colorado.EDU>
- Lines: 105
-
-
- This is a real nitty-gritty problem involving cisco routers, and 3.11 servers.
-
-
- We have the following setup on part of our network :
-
- CWB-A CWB-B WHITWORTH-1
- LANA | | | | |
- |----------------------------------(-(-+-------+-------+---
- | Arpa:100000 | |
- | | | Faith
- | LANB | | |[Arpa Framing]
- cisco ------------------------------(-+-------+------------
- | Arpa: 100FF8 novell:100008 |
- | | NEWTON-1
- | LANC | |[novell framing]
- |----------------------------------+---------+--------
- Arpa:100FF7 novell:100007
-
- ie:
- LANA is the main fileserver backbone in out machine room - 6 servers attached
- to it, no workstations.
- server CWB-A : Three 3c527 cards
- server CWB-B : one 3c527 card
- servers Whitworth-[1234] : Three LNE391 cards
-
- LANB : Staff offices - workstations use Novell frame types
- server NEWTON-1 : LNE391 card - Novell frames
- [reply to get nearest server=OFF]
-
- TWO separate logical novell networks exist on LANC
- LANC : Staff offices - workstations use Novell frame types
- LANCE server FAITH : NE2000 card - Arpa encapsulation
- [reply to get nearest server=ON]
-
- basically: Servers talk to servers and Routers using ARPA encapsulation
- workstations talk to servers using 802.3 / Novell encapsulation
-
- The problem :
- ============
- This worked fine until this morning when I upgraded the cisco router
- from 8.2(5) to 9.0(2) of the software. NOW I get lots of messages on
- the CWB-A router saying :
-
- 'router at node 0260802cf912 claims 100000 should be 100008'
- [This particular address is that of the LANB network card in the CWB-A server]
- 'router at node 0260802cf9e4 claims 100000 should be 100007'
- [This particular address is that of the LANA network card in the CWB-A server]
- 'router at node 0800E5794238 claims 100000 should be 100008'
- [this is NEWTON-1's network card]
-
- and similar messages for other devices on the network.
-
- below is a copy of the configuration for the cisco router:
-
- !
- novell routing 0000.0c01.282a
- !
- ! LANA
- interface Ethernet 0
- ip address 146.87.0.129 255.255.255.128
- novell network 100000
- novell encapsulation ARPA
- novell helper-address -1.ffff.ffff.ffff
- bridge-group 1
- !
- ! LANB
- interface Ethernet 2
- ip address 146.87.1.1 255.255.255.128
- novell network 100FF8
- novell encapsulation ARPA
- novell helper-address -1.ffff.ffff.ffff
- bridge-group 1
- !
- ! LANC
- interface Ethernet 3
- ip address 146.87.1.129 255.255.255.128
- novell network 100FF7
- novell encapsulation ARPA
- novell helper-address -1.ffff.ffff.ffff
- bridge-group 1
- !
-
- What I've found so far:
-
- Turning off bridging on ethernet0 [LANA] of the cisco does not stop the problem.
- I cannot turn bridging off on the other interfaces because this prevents the
- ISO CONS from staff offices being bridged.
-
- If it is a problem in the 3c527 driver - Why doesn't it affect the CWB-B
- server. Upgrading from v3.11 to v3.12 of the driver hasn't changed the
- problem.
-
- If it is a problem in the cisco software - Why doesn't it affect any of the
- other servers ?
-
- Any Ideas on what I should try now ?
-
- Richard
- --
- Richard Letts
- Network Manager
- University of Salford Email: R.J.Letts@salford.ac.uk
- United Kingdom Phone : +44 61 745 5252
- United States of Europe
-