[c-nsp] Flapping & Linux bonding

Church, Chuck cchurch at netcogov.com
Tue May 31 10:40:16 EDT 2005


If you're trying to do either Etherchannel or 802.3ad, the two
connections need to be into the same switch.  Check out
http://www.linuxhorizon.ro/bonding.html for more info. 


Chuck Church
Lead Design Engineer
CCIE #8776, MCNE, MCSE
Netco Government Services - Design & Implementation
1210 N. Parker Rd.
Greenville, SC 29609
Home office: 864-335-9473
Cell: 703-819-3495
cchurch at netcogov.com
PGP key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4371A48D


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Xavier
Sent: Tuesday, May 31, 2005 10:10 AM
To: Cisco-NSP
Subject: [c-nsp] Flapping & Linux bonding

Hi *,

Context: a Linux server connected to two Catalyst 4506.
On the Linux box, eth0 and eth1 are bonded to bond0.

On the first switch (first to be connected to the Linux), I got:

%C4K_EBM-4-HOSTFLAPPING: Host xx:xx:xx:xx:xx:xx in VLAN 200 is flapping
between port Gi2/12 and port Gi1/1
(Gi1/1 is connected to the second switch - trunk)

Any idea?

Xavier
--
Speak softly and carry a cellular phone.
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