Re: [LARTC] Re: gateway failover with linux

2007-07-19 Thread Mohan Sundaram
Abhijit Menon-Sen wrote: Hi Grant. At 2007-07-19 16:15:01 -0500, [EMAIL PROTECTED] wrote: I'm a bit confused, are you wanting a single Linux firewall / router to have redundant internet connections, or to route traffic to redundant systems behind it and intelligently handle the failure of one o

[LARTC] Re: gateway failover with linux

2007-07-19 Thread Abhijit Menon-Sen
Hi Grant. At 2007-07-19 16:15:01 -0500, [EMAIL PROTECTED] wrote: > > I'm a bit confused, are you wanting a single Linux firewall / > router to have redundant internet connections, or to route > traffic to redundant systems behind it and intelligently > handle the failure of one or more of said red

Re: [LARTC] gateway failover with linux

2007-07-19 Thread Grant Taylor
On 07/19/07 12:02, Abhijit Menon-Sen wrote: I'm wondering if there's a good way to configure a Linux firewall box to failover to a single backup server, while preserving connection state. I'm a bit confused, are you wanting a single Linux firewall / router to have redundant internet connectio

Re: [LARTC] How to check an inactive slave in a bond?

2007-07-19 Thread Jay Vosburgh
olivier arsac <[EMAIL PROTECTED]> wrote: [...] >Scenario: >your bond0 is running fine. it uses eth0 as active slave and eth2 as inactive >slave (different cards/ different driver to be safe) >some bozo reconfigures the switch port where your eth2 is plugged in and you >don't notice it (the crucial

[LARTC] Re: gateway failover with linux

2007-07-19 Thread Abhijit Menon-Sen
At 2007-07-19 22:32:51 +0530, [EMAIL PROTECTED] wrote: > > I'm wondering if there's a good way to configure a Linux firewall box > to failover to a single backup server, while preserving connection > state. Looks like this is it: http://people.netfilter.org/pablo/conntrack-tools/ -- ams

[LARTC] gateway failover with linux

2007-07-19 Thread Abhijit Menon-Sen
Hi. I'm wondering if there's a good way to configure a Linux firewall box to failover to a single backup server, while preserving connection state. This question has been asked before, but the latest reference I can find is from 2004, at which time Linux had no equivalent of OpenBSD's pfsync, tho

[LARTC] How to check an inactive slave in a bond?

2007-07-19 Thread olivier arsac
I'm using bonding in active-fallback mode to guarantee maximum availability on some critical servers. The mii mode is active so I can detect things like dead card and/or unplugged cable even on the inactive slave. But how do I check that the inactive slave is properly configured/connected to the

[LARTC] tc qdisc TEQL limited to two interfaces? [ 1.8Gbps ]

2007-07-19 Thread Leroy van Logchem
I'am using the following script to aggregate the bandwidth of one quad gigabit ethernet controller (pci-express). #!/bin/bash sysctl -w net.ipv4.tcp_reordering = 30 ifconfig eth1 up ifconfig eth2 up ifconfig eth3 up ifconfig eth4 up modprobe sch_teql tc qdisc add dev eth1 root teql0 tc qdisc add