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] 
<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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