I have an RB493G that I purchased about a year ago with two R52Hn radios, one with two SWI-MMCX antennas and the other with a single MMCX antenna. I have the card with the single antenna set up as a 2.4Ghz g-only network and the card with two antennas set up as a 5ghz n-only network. A few months ago I noticed that file transfers and media streaming on the N network were running slowly so I tested using iperf running on a wired local server to a wireless client on each of my wireless segments and found that my n network is providing slower speeds than my g network. I’m not sure what could be causing this, but it appears to remain a problem between different clients and different OS’s (same problem on a linux and windows machine) so I believe it’s a problem with my network configuration, rather than a client configuration issue. I’m getting approximately 20 mbits/sec on G and approximately 10-15 mbits/sec on the N segment. I’m not sure if I have something set up incorrectly on the wireless cards or on the network as a whole. My wired clients get over 100 mbits/sec for comparison. My compact export follows, I’d greatly appreciate any help you might be able to give me:
# jan/29/2012 17:30:28 by RouterOS 5.12
# software id =
#
/interface bridge
add l2mtu=1520 name=bridge1 protocol-mode=rstp
/interface ethernet
set 0 name=ether1
set 2 name=ether3
set 3 master-port=ether3 name=ether4
set 4 master-port=ether3 name=ether5
set 5 name=ether6
set 6 name=ether7
set 7 name=ether8
set 8 name=ether9
set 1 master-port=ether3 name=ether2
/interface wireless security-profiles
set [ find default=yes ] eap-methods="" group-ciphers="" unicast-ciphers=""
add authentication-types=wpa2-psk eap-methods="" management-protection=allowed mode=dynamic-keys name=profile1 supplicant-identity="" wpa2-pre-shared-key=\
/interface wireless
set 0 band=5ghz-onlyn channel-width=20/40mhz-ht-above disabled=no frequency=5240 ht-rxchains=0,1 ht-supported-mcs=\
mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7,mcs-8,mcs-9,mcs-10,mcs-11,mcs-12,mcs-13,mcs-14,mcs-15 ht-txchains=0,1 l2mtu=2290 mode=ap-bridge scan-list=default security-profile=\
profile1 ssid=avalon-n wireless-protocol=802.11
set 1 band=2ghz-onlyg disabled=no frequency=2427 ht-supported-mcs=mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7,mcs-8,mcs-9,mcs-10,mcs-11,mcs-12,mcs-13,mcs-14,mcs-15 l2mtu=2290 \
mode=ap-bridge scan-list=default security-profile=profile1 ssid=avalon-g
/interface wireless nstreme
set wlan2 enable-polling=no
/ip pool
add name=dhcp_pool1 ranges=10.0.2.2-10.0.2.254
add name=dhcp_pool3 ranges=10.0.3.2-10.0.3.254
add name=dhcp_pool4 ranges=10.0.1.2-10.0.1.254
/ip dhcp-server
add address-pool=dhcp_pool1 interface=wlan1 name=dhcp2
add address-pool=dhcp_pool3 interface=wlan2 name=dhcp3
add address-pool=dhcp_pool4 disabled=no interface=bridge1 name=dhcp1
/interface bridge port
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=wlan2
add bridge=bridge1 interface=wlan1
/ip address
add address=10.0.1.1/24 interface=bridge1
/ip dhcp-client
add disabled=no interface=ether1
/ip dhcp-server config
set store-leases-disk=immediately
/ip dhcp-server lease
add address=10.0.1.10 mac-address=00:14:22:97:50:87 server=dhcp1
add address=10.0.1.11 mac-address=00:13:A9:3F:19:88 server=dhcp1
/ip dhcp-server network
add address=10.0.1.0/24 dns-server=208.67.222.222,208.67.220.220 gateway=10.0.1.1
add address=10.0.2.0/24 dns-server=208.67.222.222,208.67.220.220 gateway=10.0.2.1
add address=10.0.3.0/24 dns-server=208.67.222.222,208.67.220.220 gateway=10.0.3.1
/ip dns
set max-udp-packet-size=512 servers=75.75.75.75,75.75.76.76
/ip firewall filter
add chain=input comment="Added by webbox" protocol=icmp
add chain=input comment="Added by webbox" connection-state=established in-interface=ether1
add chain=input comment="Added by webbox" connection-state=related in-interface=ether1
add action=drop chain=input comment="Added by webbox" in-interface=ether1
add action=jump chain=forward comment="Added by webbox" in-interface=ether1 jump-target=customer
add chain=customer comment="Added by webbox" connection-state=established
add chain=customer comment="Added by webbox" connection-state=related
add action=drop chain=customer comment="Added by webbox"
add action=drop chain=forward
add action=drop chain=forward
add action=drop chain=forward src-address=127.0.0.0/8
add action=drop chain=forward dst-address=127.0.0.0/8
add action=drop chain=forward src-address=224.0.0.0/3
add action=drop chain=forward dst-address=224.0.0.0/3
/ip firewall nat
add action=masquerade chain=srcnat comment="Added by webbox" out-interface=ether1
/ip service
set telnet address=10.0.1.0/24
set ftp address=10.0.1.0/24
set www address=10.0.1.0/24
set ssh address=10.0.1.0/24
set winbox address=10.0.1.0/24
/ip smb shares
set [ find default=yes ] directory=/pub
/ip upnp
set allow-disable-external-interface=no enabled=yes
/ip upnp interfaces
add interface=ether1 type=external
add interface=ether2 type=internal
add interface=ether3 type=internal
add interface=ether4 type=internal
add interface=ether5 type=internal
add interface=ether6 type=internal
add interface=ether7 type=internal
add interface=ether8 type=internal
add interface=ether9 type=internal
add interface=wlan1 type=internal
add interface=wlan2 type=internal
add interface=bridge1 type=internal
add type=internal
/queue interface
set ether1 queue=ethernet-default
set ether2 queue=ethernet-default
set ether3 queue=ethernet-default
set ether4 queue=ethernet-default
set ether5 queue=ethernet-default
set ether6 queue=ethernet-default
set ether7 queue=ethernet-default
set ether8 queue=ethernet-default
set ether9 queue=ethernet-default
set wlan1 queue=wireless-default
set wlan2 queue=wireless-default
set bridge1 queue=default
/system clock
set time-zone-name=America/Los_Angeles
/system ntp client
set enabled=yes mode=unicast primary-ntp=50.97.210.169
/tool graphing interface
add
