Actually no lag has been enabled. The switch shows no singleport lag or 
something similar. 

 

It “should” behave like a simple piece of cable…

 

Ok, I found the problem… first of all spanguard put the LAN and WAN ports 
fe.1.38 and 39 into blocking mode.

And then I also had some other spanning tree issue which prevented the 
forwarding of the packets. I am just not sure what exactly the problem is.

Simply disabling SpanningTree at least allows the ping to go through the WAN 
Accelerator and reach the Firewall.

 

Tom

 

From: Volker Kull [mailto:[email protected]] 
Sent: Monday, January 19, 2009 8:52 PM
To: Enterasys Customer Mailing List
Subject: AW: [enterasys] Question about VLANs

 

Could it be that you have singleport lag enabled and the WAN Accelerators are 
using this? If you see the port 1.40 as lag.0.x in 'sh lacp' you need to 
disable this feature or add the lag into vlan 2.

Volker

Volker Kull 

BELL Computer-Netzwerke GmbH 
Ohmstr. 6 - 76229 Karlsruhe (Germany) 
Tel: +49 721/6624993-0 Fax: +49 721/6624993-30 
Email: [email protected]

________________________________

Von: [email protected] 
An: Enterasys Customer Mailing List 
Gesendet: Mon Jan 19 17:57:32 2009
Betreff: [enterasys] Question about VLANs 

Hi again,

 

I just ran into another interesting problem I actually have no solution for.

 

We are working with WAN Accelerators and two Firewalls running in 
active/standby failover mode.


Normally we had only one firewall so setup was quite easy. From the C2 switch 
to the LAN port of the accelerator and from the wan port to the inside port of 
the firewall.

 

Since we now have two firewalls we have to connect I thought of a simple VLAN.

 

Connecting the switch port fe.1.39 to the lan port of the accelerator, the wan 
port to, let’s say, fe.1.40 and the two inside interfaces of the firewalls to 
fe.1.41 and fe.1.42.

For those three ports I have created a vlan 

 

set vlan create 2

set vlan name 2 "Transit"

set port vlan fe.1.40 2 modify-egress

set port vlan fe.1.41 2 modify-egress

set port vlan fe.1.42 2 modify-egress

 

set port alias fe.1.39 "LAN Acc"

set port alias fe.1.40 "WAN Acc"

set port alias fe.1.41 "Inside-Primary FW"

set port alias fe.1.42 "Inside-Secondary FW"

 

When I try to ping or send any other packets it always fails.

I can see the ARP broadcast, requesting for the inside IP of the FW, coming out 
of the WAN port of the accelerator, but I don’t see it coming out of either 
port fe.1.41 or fe.1.42.

So the broadcast goes into the VLAN 2 but not exiting it…


I am pretty confused about this. Does anybody has an idea about this?

 

BTW, if I use a simple 5 port switch and connect all three “ports” it works 
like a charm, it only fails with the VLAN configuration…

 

Bye

Tom

 

--
Thomas Hofmann, System-/Networkadministrator, IT
EB - Discover the Experience
Visitors: Am Wolfsmantel 46, 91058 Erlangen, Germany

Phone: +49 (9131) 7701 6969, mailto:[email protected]
Fax: +49 (9131) 7701 6333, http://www.elektrobit.com 
<http://www.elektrobit.com/> 
 
PGP-Key: http://keyserver.elektrobit.com <http://keyserver.elektrobit.com/> 
 
Elektrobit Automotive GmbH, Am Wolfsmantel 46, 91058 Erlangen, Germany
Managing Director Otto Fößel
Register Court Fürth HRB 4886

 
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