Hello List! This may be one of those, you''re doing it wrong, and there is a far easier way to do it than the way you are doing it. *Overview *-Cable Provider provides 2x IPs -IPs are given out via DHCP. Static costs $$ (double/triple the monthly cost). -Bandwidth is 7Mb down/2Mb up, but shared between two ips. *Goal* - Use both IPs and do traffic shaping on both of them. IP1 gives access to router. IP2 gives access to other machines on LAN using DNAT. - My goal is that I could have usenet or bt going full throttle, but immediately slows down once someone makes a voip phone call or starts browsing the internet. - If I didn''t need to do the traffic shaping, using 3 NICs with the multi-isp shorewall setup would work fine. *Rationale and other strategies* - Tried using 3 NICs, 2 on the internet getting IPs via DHCP, and 1 for the lan. Couldn''t do traffic shaping well, since the bandwidth is shared between the two ips. If each IP got dedicated bandwidth it''d be fantastic, but I couldn''t figure out what to do to keep latency down, tried halving the bandwidth on each interface, but to no avail. Perhaps go back to this setup, but use IFB''s to shape the download bandwidth? Ultimately, the only reason this seems to be a difficult problem is because I need to try to get traffic shaping shared between two ips. *Current Physical Setup* *=========================*- Two NICs: eth0-LAN,eth1-INTERNET - Using bridge-br0 interface to bridge eth1 & tap0 - Using Program called Multimac to create tap1 & tap2 interfaces with unique MAC addresses that request ips via DHCP. Multimac works by copying all traffic on tap0 to tap1 & tap2. Call it another bridge. I tried to not use multimac and create tap interfaces, add them to the bridge and assign unique MACs and IPs, but couldn''t get it to work, so I just ended up using the multimac application. *Current Setup **=========================*- Version: Shorewall-perl 4.0.15 on Debian lenny *zones =========================*fw firewall loc ipv4 ptd1 ipv4 ptd2 ipv4 world ipv4 wan:world bport4 dmz:world bport4 * Interfaces **==========================* world br0 - bridge,dhcp wan br0:eth1 - dmz br0:tap0 - ptd1 tap1 detect dhcp,routeback,upnp ptd2 tap2 detect dhcp,routeback,upnp loc eth0 detect dhcp,routeback* Policy **=========================*wan dmz ACCEPT dmz wan ACCEPT # Firewall Policy loc ptd1 ACCEPT loc ptd2 ACCEPT loc $FW ACCEPT loc all REJECT info $FW ptd1 ACCEPT $FW ptd2 ACCEPT $FW loc ACCEPT $FW all REJECT info ptd1 $FW DROP info ptd1 loc DROP info ptd1 all DROP info ptd2 $FW DROP info ptd2 loc DROP info ptd2 all DROP info # THE FOLLOWING POLICY MUST BE LAST all all REJECT info* Masq **==========================* tap1 192.168.1.0/24 24.102.132.193 tap1 24.102.139.228 24.102.132.193 tap2 192.168.1.0/24 24.102.139.228 tap2 24.102.132.193 24.102.139.228* providers** **==========================* ptd1 1 1 main tap1 detect track,balance,optional eth0 ptd2 2 2 main tap2 detect track,balance,optional eth0* route_rules **==========================* 192.168.1.2 - ptd2 1000 192.168.1.0/24 - ptd1 1000* tcclasses **==========================* tap0 1 25*full/100 full 1 tos=0x68/0xfc,tos=0xb8/0xfc tap0 2 15*full/100 full 2 tap0 3 20*full/100 full 3 tos-minimize-delay tap0 4 30*full/100 full 4 tap0 5 10*full/100 75*full/10 5 default * tcdevices **==========================* tap0 1550kbit 5600kbit* tcrules **==========================* 1:T 0.0.0.0/0 0.0.0.0/0 icmp echo-request 1:T 0.0.0.0/0 0.0.0.0/0 icmp echo-reply 1:T 192.168.1.5 0.0.0.0/0 1:T 0.0.0.0/0 192.168.1.5 2:T 0.0.0.0/0 0.0.0.0/0 udp 53 2:T 0.0.0.0/0 0.0.0.0/0 tcp 53 3:T 0.0.0.0/0 0.0.0.0/0 tcp 22 3:T 0.0.0.0/0 0.0.0.0/0 tcp 5900 4:T 0.0.0.0/0 0.0.0.0/0 tcp 80,443,8080,8088 # Bittorrent/Usenet 5:T 0.0.0.0/0 0.0.0.0/0 tcp 6974 5:T 0.0.0.0/0 0.0.0.0/0 udp 6974 5:T 0.0.0.0/0 192.168.1.2 5:T 192.168.1.2 0.0.0.0/0* ip addr show **==========================* 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000 link/ether 00:30:65:7b:b2:c4 brd ff:ff:ff:ff:ff:ff 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000 link/ether 00:01:02:a6:54:0b brd ff:ff:ff:ff:ff:ff inet6 fe80::201:2ff:fea6:540b/64 scope link valid_lft forever preferred_lft forever 4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000 link/ether 00:10:4b:c5:99:de brd ff:ff:ff:ff:ff:ff inet 192.168.1.1/24 brd 192.168.1.255 scope global eth0 inet6 fe80::210:4bff:fec5:99de/64 scope link valid_lft forever preferred_lft forever 5: tap0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc htb state UNKNOWN qlen 500 link/ether 00:ff:6f:ae:70:0f brd ff:ff:ff:ff:ff:ff inet6 fe80::2ff:6fff:feae:700f/64 scope link valid_lft forever preferred_lft forever 6: tap1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 576 qdisc pfifo_fast state UNKNOWN qlen 500 link/ether 00:1e:2a:47:bf:0d brd ff:ff:ff:ff:ff:ff inet 24.102.132.193/24 brd 255.255.255.255 scope global tap1 7: tap2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 576 qdisc pfifo_fast state UNKNOWN qlen 500 link/ether 00:10:4b:c5:99:dd brd ff:ff:ff:ff:ff:ff inet 24.102.139.228/24 brd 255.255.255.255 scope global tap2 8: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN link/ether 00:01:02:a6:54:0b brd ff:ff:ff:ff:ff:ff inet6 fe80::201:2ff:fea6:540b/64 scope link valid_lft forever preferred_lft forever* ip route show **==========================* 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.1 24.102.139.0/24 dev tap2 proto kernel scope link src 24.102.139.228 24.102.132.0/24 dev tap1 proto kernel scope link src 24.102.132.193 default nexthop via 24.102.132.1 dev tap1 weight 1 nexthop via 24.102.139.1 dev tap2 weight 1 default via 24.102.132.1 dev tap1 * * ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. 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