freebsd把所有網(wǎng)卡建橋,是否相當(dāng)于一臺(tái)交換機(jī)?但是... ...

qq830406

fxp0+nfe0 做橋1 外網(wǎng)PPPOE出口
em0+ath0 做橋0 內(nèi)網(wǎng)

-------------------------

fxp0接光纖收發(fā)器,freebsd本機(jī)PPPOE撥號(hào)正常,pf NAT正常.

另外一臺(tái)獨(dú)立的電腦連接nfe0,進(jìn)行PPPOE撥號(hào)卻無法撥通.
理論上來說,nfe0口的數(shù)據(jù)應(yīng)該通過橋也可以通過fxp0的收發(fā)器出去,可是沒有,問題出在哪兒呢?

默認(rèn)情況下nfe0連接為FULL1000M,fxp0連接為FULL100M,設(shè)想問題在此,強(qiáng)制nfe0為100M,問題依然存在.

如此做的橋
ifconfig_fxp0="up"
ifconfig_nfe="up"
cloned_interfaces="bridge0 bridge1"
ifconfig_bridge0="addm em0 addm ath0"
ifconfig_bridge1="addm fxp0 addm nfe0 up"

# ifconfig
fxp0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=2009<RXCSUM,VLAN_MTU,WOL_MAGIC>
        ether 00:90:27:a4:eb:0b
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
ath0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 2290
        ether 00:0a:eb:a7:4f:5e
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11g <hostap>
        status: associated
        ssid "FreeBSD" channel 8 (2447 Mhz 11g) bssid 00:0a:eb:a7:4f:5e
        authmode WPA2/802.11i privacy MIXED deftxkey 2 AES-CCM 2:128-bit
        AES-CCM 3:128-bit txpower 31.5 scanvalid 60 bgscan bgscanintvl 300
        bgscanidle 250 roam:rssi11g 7 roam:rate11g 5 protmode CTS burst
        dtimperiod 1
em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=98<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
        ether 00:07:e9:49:15:0c
        inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255
        media: Ethernet autoselect (1000baseTX <full-duplex>)
        status: active
nfe0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=88<VLAN_MTU,VLAN_HWCSUM>
        ether 00:16:17:8d:cf:1d
        media: Ethernet autoselect (1000baseTX <full-duplex>)
        status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        inet 127.0.0.1 netmask 0xff000000
pfsync0: flags=0<> metric 0 mtu 1460
        syncpeer: 224.0.0.240 maxupd: 128
pflog0: flags=0<> metric 0 mtu 33204
bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 6a:0c:cd:f3:0c:ad
        id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
        maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200
        root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
        member: ath0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 2 priority 128 path cost 370370
        member: em0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 3 priority 128 path cost 2000000
bridge1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 7e:81:2a:31:cc:af
        id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
        maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200
        root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
        member: nfe0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 4 priority 128 path cost 2000000
        member: fxp0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 1 priority 128 path cost 55

[ 本帖最后由 qq830406 于 2009-7-23 06:11 編輯 ]

qq830406

誰能給個(gè)思路?
想不通哦

jundbafj

幫你頂一下，我是菜鳥，學(xué)習(xí)中

phoenixson

我也對(duì)bridge不太清楚，只是有一點(diǎn)疑問，bridge是自動(dòng)轉(zhuǎn)發(fā)成員之間的數(shù)據(jù)的么，還是需要在sysctl.conf中設(shè)置些轉(zhuǎn)發(fā)規(guī)則呢。

langue

我試過廣播橋，最后的結(jié)果是無數(shù)的回聲制造了廣播風(fēng)暴，CPU 使用率爆滿，本地控制臺(tái)都難登錄上去………………

qq830406

原帖由 phoenixson 于 2009-7-24 17:13 發(fā)表
我也對(duì)bridge不太清楚，只是有一點(diǎn)疑問，bridge是自動(dòng)轉(zhuǎn)發(fā)成員之間的數(shù)據(jù)的么，還是需要在sysctl.conf中設(shè)置些轉(zhuǎn)發(fā)規(guī)則呢。

net.link.bridge.pfil_bridge=1
net.link.bridge.pfil_member=1

qq830406

無論網(wǎng)線換到nfe0還是fxp0,pppoe口選擇bridge1向外撥,完全沒有問題.

但從外面插條網(wǎng)線撥pppoe就完全不通,不知何解

qq830406

再次詢問

zmoon

這個(gè)從OpenBSD過來 if_bridge是有PPPOE數(shù)據(jù)包不能通過的問題,在freebsd6.0時(shí)就有了，不知道有沒有什么sysctl可以調(diào)節(jié)不？

如果用Freebsd原生的Bridge是可以的，不過貌似老的Bridge方式Freebsd7中已經(jīng)被去掉了.