From: Ekis, Joel (Joel.Ekis@xxxxxxxxxxxxxxxxx)
Date: Tue Jun 15 1999 - 13:51:42 GMT-3
I realize that you are not supposed to do this. However, in the
troubleshooting portion of the CCIE Lab, this might be done to your
configuration. I'm looking for a way to detect it without using 'show
running'.
Joel Ekis, CCNA, CCDA
Xerox Connect
Sr. Enterprise Consultant/Enterprise Network Services
Phone: 913-696-0888, x234
Pager: 800-697-0359
joel.ekis@connect.xerox.com <mailto:joel.ekis@connect.xerox.com>
-----Original Message-----
From: Jinho Hong [SMTP:sthong@ascend.co.jp]
Sent: Tuesday, June 15, 1999 10:25 AM
To: Ekis, Joel; cisco@groupstudy.com; ccielab@groupstudy.com;
ciscotech@mailer.netcerts.com
Subject: RE: AppleTalk EIGRP - Troubleshooting Duplicates
Hi, Ekis
When enabling EIGRP for Appletalk for a group of routers, each
router MUST
have a UNIQUE process-ID.
Router(config)#Appletalk routing eigrp process-id
Regards,
Jinho Hong
Ascend Communication Japan K.K.
-----Original Message-----
·ol : Ekis, Joel <Joel.Ekis@Connect.Xerox.com>
^¶æ : cisco@groupstudy.com <cisco@groupstudy.com>;
ccielab@groupstudy.com
<ccielab@groupstudy.com>; ciscotech@mailer.netcerts.com
<ciscotech@mailer.netcerts.com>
"úZz : 1999"N6SZ15"ú 3:02
OE-¼ : AppleTalk EIGRP - Troubleshooting Duplicates
>Here is an AppleTalk network I was playing with:
>
>25T --- <TokenRing> --- 4kT --- <256k Serial> --- 4kE ---
<Ethernet> ---
25E
>
>25T - 2512 Token Ring
>4kT - 4000-M Token Ring & Serial
>4kE - 4700-M Ethernet & Serial
>25E - 2514 Ethernet
>
>
>The TokenRing segment is running RTMP only - Cable Range is 2-2,
zone "two"
>The Ethernet segment is running AppleTalk EIGRP only - Cable Range
is 1-1,
>zone "one"
>The Serial link is connected via TCP/IP only. A GRE tunnel was
created
with
>Cable Range 3-3, zone "three" AppleTalk EIGRP is running on 4kE
and 4kT
>Tunnel. There is no IP routing protocol. 4kT is redistributing
RTMP &
>Apple EIGRP.
>
>The 25T interface (2.93) can ping the 25E interface (1.175). To
simulate
>something the CCIE Lab proctor might do, I entered config mode on
the 4kT
>router. I changed the 'appletalk routing eigrp 3' command to
'appletalk
>routing eigrp 2'. This duplicated the EIGRP process ID of the 4kE
router.
>You get the following error on the console:
>
>%AT-5-COMPATERR4: AppleTalk EIGRP neighbor incompatibility; 3.125
has same
>router ID (2)
>
>Here's some related ping & show command output:
>
>25E#ping appletalk 2.93
>
>Type escape sequence to abort.
>Sending 5, 100-byte AppleTalk Echos to 2.93, timeout is 2 seconds:
>RRRRR
>Success rate is 0 percent (0/5)
>
>4kT#show appletalk eigrp neighbors
>AT/EIGRP Neighbors for process 1, router id 3
>
>4kT#show appletalk neighbors
>AppleTalk neighbors:
> 2.93 TokenRing0, uptime 0:19:22, 2 secs
> Neighbor is reachable as a RTMP peer
> 3.125 Tunnel0, uptime 0:18:29, 107 secs
> NOTE: Neighbor is down.
>
>4kT#clear appletalk neighbor all
>%AT-6-NBRDELETED: Neighbor entry for 3.125 has been deleted
>%AT-5-COMPATERR4: AppleTalk EIGRP neighbor incompatibility; 3.125
has same
>router ID (2)
>
>4kT#show appletalk neighbors
>AppleTalk neighbors:
> 2.93 TokenRing0, uptime 0:23:08, 8 secs
> Neighbor is reachable as a RTMP peer
>
>Notice that the output of the 4kT#show appletalk eigrp neighbors
command
>still says that the EIGRP process ID is 3! There are no EIGRP
neighbors
>however. If you clear the appletalk neighbors, then you will get
the error
>message that the Process ID is not unique. Now you know what to
fix.
>
>My question for the AppleTalk gurus, other than 'show running' is
there
some
>way to see that the Process ID was set to 2 (the duplicate)? So
far, the
>only way I can tell that the ID changed was from the output of the
clear
>neighbors command.
>
>Joel Ekis, CCNA, CCDA
>Xerox Connect
>Sr. Enterprise Consultant/Enterprise Network Services
>Phone: 913-696-0888, x234
>Pager: 800-697-0359
>joel.ekis@connect.xerox.com <mailto:joel.ekis@connect.xerox.com>
>
>
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