From: Tom Eastep <[email protected]>
> On 07/24/2013 09:14 AM, Tom Eastep wrote:
>> On 07/24/2013 09:03 AM, John Doe wrote:
>>> we have a 3 isps balanced configuration.
>>> When all are up, everything is fine.
>>> But when we lose one, we basically lose all connectivity...
>>> Do we have to (not) do something for failover to work?
>> You must install and configure LSM (Link Status Monitor).
> And configure all provider interfaces as 'optional'.
Thx for the info.
Do I put optional in interfaces or providers? or both?
BTW, using Shorewall 4.5.4-1 on CentOS 6.4
Also, should I have a default gateway (right now on the sdsl)...?
I read someone saying you do not want to have one...
Just in case, here are my confs:
interfaces:
sdsl eth1
dhcp,tcpflags,routefilter,nosmurfs,logmartians,optional
free eth2
dhcp,tcpflags,routefilter,nosmurfs,logmartians,optional
ovh eth3
dhcp,tcpflags,routefilter,nosmurfs,logmartians,optional
loc eth0 tcpflags,nosmurfs,routeback
vpn tun0 tcpflags,nosmurfs
providers:
sdsl 1 1 main eth1 192.168.0.254
track,balance eth0
free 2 2 main eth2 192.168.2.254
track,balance eth0
ovh 3 3 main eth3 192.168.4.254
track,balance eth0
masq:
eth1 192.168.16.0/20 192.168.0.251
eth2 192.168.16.0/20 192.168.2.251
eth3 192.168.16.0/20 192.168.4.251
eth0 tun0
rtrules: (should I avoid rtrules if the intterface goes down)?
192.168.16.0/20 <IP>/23 sdsl 1000
shorewall.conf:
STARTUP_ENABLED=Yes
VERBOSITY=1
BLACKLIST_LOGLEVEL=
LOG_MARTIANS=Yes
LOG_VERBOSITY=2
LOGALLNEW=
LOGFILE=/var/log/messages
LOGFORMAT="Shorewall:%s:%s:"
LOGTAGONLY=No
LOGLIMIT=
MACLIST_LOG_LEVEL=info
RELATED_LOG_LEVEL=
SFILTER_LOG_LEVEL=info
SMURF_LOG_LEVEL=info
STARTUP_LOG=/var/log/shorewall-init.log
TCP_FLAGS_LOG_LEVEL=info
CONFIG_PATH="${CONFDIR}/shorewall:${SHAREDIR}/shorewall"
GEOIPDIR=/usr/share/xt_geoip/LE
IPTABLES=
IP=
IPSET=
LOCKFILE=
MODULESDIR=
PATH="/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin"
PERL=/usr/bin/perl
RESTOREFILE=restore
SHOREWALL_SHELL=/bin/sh
SUBSYSLOCK=/var/lock/subsys/shorewall
TC=
ACCEPT_DEFAULT=none
DROP_DEFAULT=Drop
NFQUEUE_DEFAULT=none
QUEUE_DEFAULT=none
REJECT_DEFAULT=Reject
RCP_COMMAND='scp ${files} ${root}@${system}:${destination}'
RSH_COMMAND='ssh ${root}@${system} ${command}'
ACCOUNTING=Yes
ACCOUNTING_TABLE=filter
ADD_IP_ALIASES=Yes
ADD_SNAT_ALIASES=No
ADMINISABSENTMINDED=Yes
AUTO_COMMENT=Yes
AUTOMAKE=No
BLACKLISTNEWONLY=Yes
CLAMPMSS=No
CLEAR_TC=Yes
COMPLETE=No
DELETE_THEN_ADD=Yes
DETECT_DNAT_IPADDRS=No
DISABLE_IPV6=Yes
DONT_LOAD=
DYNAMIC_BLACKLIST=Yes
EXPAND_POLICIES=Yes
EXPORTMODULES=Yes
FASTACCEPT=No
FORWARD_CLEAR_MARK=
IMPLICIT_CONTINUE=Yes
IPSET_WARNINGS=Yes
IP_FORWARDING=On
KEEP_RT_TABLES=No
LEGACY_FASTSTART=Yes
LOAD_HELPERS_ONLY=No
MACLIST_TABLE=filter
MACLIST_TTL=
MANGLE_ENABLED=Yes
MAPOLDACTIONS=No
MARK_IN_FORWARD_CHAIN=No
MODULE_SUFFIX=ko
MULTICAST=No
MUTEX_TIMEOUT=60
NULL_ROUTE_RFC1918=No
OPTIMIZE=0
OPTIMIZE_ACCOUNTING=No
REQUIRE_INTERFACE=No
RESTORE_DEFAULT_ROUTE=Yes
RETAIN_ALIASES=No
ROUTE_FILTER=No
SAVE_IPSETS=No
TC_ENABLED=No
TC_EXPERT=No
TC_PRIOMAP="2 3 3 3 2 3 1 1 2 2 2 2 2 2 2 2"
TRACK_PROVIDERS=No
USE_DEFAULT_RT=No
USE_PHYSICAL_NAMES=No
ZONE2ZONE=2
BLACKLIST_DISPOSITION=DROP
MACLIST_DISPOSITION=REJECT
RELATED_DISPOSITION=ACCEPT
SMURF_DISPOSITION=DROP
SFILTER_DISPOSITION=DROP
TCP_FLAGS_DISPOSITION=DROP
TC_BITS=
PROVIDER_BITS=
PROVIDER_OFFSET=
MASK_BITS=
ZONE_BITS=0
IPSECFILE=zones
Thx,
JD
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