This Vlan, is it delivered over ATM?
-----Original Message----- From: Hill, Aaron [mailto:aaron.hill@navitaire.com mailto:aaron.hill@navitaire.com ] Sent: Thursday, March 06, 2003 4:31 PM To: 'Michael van Elst' Cc: 'toasters@mathworks.com' Subject: RE: Snapmirror throughput question
Hey, thanks for the info.
Here is the network path;
Source Filer GigE ----- GigE on 4006 Cisco switch 100/FastE ---- 100/FastE 3660 Router 100/FastE ==== 20M VLAN ==== 100/FastE 3600 Router 100/FastE ---- 100/FastE 2924 Cisco Switch 100/FastE ---- 100/FastE Target Filer
The VLAN carrier, UECOMM tells us no traffic shaping on the VLAN given to us.
Our network team has no traffic shaping on the 3660 nor the 3600.
See anything else in there causing an issue?
Aaron
-----Original Message----- From: Michael van Elst [mailto:mlelstv@serpens.de mailto:mlelstv@serpens.de ] Sent: Friday, March 07, 2003 10:44 AM To: Hill, Aaron Subject: Re: Snapmirror throughput question
On Thu, Mar 06, 2003 at 04:40:11PM -0600, Hill, Aaron wrote:
Hi people, What are the maximum data throughputs that Snapmirroring people are
seeing
across a WAN? Is anyone seeing 15-20+ Mbit bandwidth usage from a
snapmirror
data stream?
I had a setup with three F840 clusters mirroring to a single F840 cluster using a 100Mbps tunnel. During the initial full copy this saturated the tunnel, the subsequent incremental updates were on a much lower level (4-8Mbps), because there weren't that many changes to the data. When I paused the mirror for a while and then resumed it, the then much bigger update again saturated the tunnel.
The filers all had GigE and for the tunnel a dedicated GigE each, so that snapmirror traffic didn't compete with regular accesses. The filers were connected to Catalyst6509s that had a 100TX link to the tunnel routers.
I am a bit confused what the "dedicated 20Mbit Ethernet link" of yours is exactly. If that's some kind of allocated bandwidth or subject to traffic shaping, it could easily explain the bad utilization.
Greetings,