Re: [mpls-linux-general] Does mpls-linux support for add label to normal IP packet?
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Re: [mpls-linux-general] Does mpls-linux support for add label to normal IP packet?
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From: Adrian P. <adr...@gm...> - 2008-04-23 10:04:20
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It seems that no traffic passes through nhlfe 0x03. This is why you don't have any mpls labels. I can't really tell why it's not working... Sorry... 2008/4/23 刘磊 <orp...@ms...>: > > Thank You. I have do that you said. BUT I'm in HOST B, LER2. My ip address > is 192.168.99.4/24 and 10.0.0.2. > > -bash-3.2# dmesg > MPLS: version 1.958 > MPLS: protocol driver interface - > MPLS: IPv4 over MPLS support > -bash-3.2# > -bash-3.2# lsmod > Module Size Used by Not tainted > mpls4 3904 0 > mpls 67240 1 mpls4 > pcnet32 27332 0 > e100 28620 0 > e1000 105024 0 > e1000e 80932 0 > -bash-3.2# > -bash-3.2# ip r > 10.0.0.1 via 172.16.0.2 dev eth1 mpls 0x3 > 172.16.0.0/24 dev eth1 proto kernel scope link src 172.16.0.3 > 192.168.99.0/24 dev eth2 proto kernel scope link src 192.168.99.3 > -bash-3.2# > -bash-3.2# mpls nhlfe show > NHLFE entry key 0x00000003 mtu 1496 propagate_ttl > push gen 2000 set eth1 ipv4 172.16.0.2 (0 bytes, 0 pkts) > NHLFE entry key 0x00000002 mtu 1500 propagate_ttl > set eth2 ipv4 192.168.1.4 (0 bytes, 0 pkts) > > And after I had a ping in 10.0.0.2 > -bash-3.2# ip r > 10.0.0.1 via 172.16.0.2 dev eth1 mpls 0x3 > 172.16.0.0/24 dev eth1 proto kernel scope link src 172.16.0.3 > 192.168.99.0/24 dev eth2 proto kernel scope link src 192.168.99.3 > -bash-3.2# mpls nhlfe show > NHLFE entry key 0x00000003 mtu 1496 propagate_ttl > push gen 2000 set eth1 ipv4 172.16.0.2 (0 bytes, 0 pkts) > NHLFE entry key 0x00000002 mtu 1500 propagate_ttl > set eth2 ipv4 192.168.1.4 (0 bytes, 0 pkts) > -bash-3.2# > -bash-3.2# ifconfig > eth1 Link encap:Ethernet HWaddr 00:C0:5C:12:C4:0D > inet addr:172.16.0.3 Bcast:0.0.0.0 Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:214 errors:0 dropped:0 overruns:0 frame:0 > TX packets:44 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:100 > RX bytes:17444 (17.0 KiB) TX bytes:4298 (4.1 KiB) > Base address:0xc400 Memory:ff780000-ff7a0000 > > eth2 Link encap:Ethernet HWaddr 00:C0:5C:12:C4:0E > inet addr:192.168.99.3 Bcast:0.0.0.0 Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:1025 errors:0 dropped:0 overruns:0 frame:0 > TX packets:263 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:100 > RX bytes:77966 (76.1 KiB) TX bytes:49836 (48.6 KiB) > Base address:0xc000 Memory:ff740000-ff760000 > > And tcpdump in LER2's eth1 (to LER1's 172.16.0.2) > > 00:20:18.333708 IP 10.0.0.2> 10.0.0.1: ICMP echo request, id 59752, seq > 27, length 64 > 0x0000: 4500 0054 0000 4000 3f01 27a7 0a00 0002 > 0x0010: 0a00 0001 0800 df87 e968 001b 5f05 0f48 > 0x0020: c9a3 0c00 0809 0a0b 0c0d 0e0f 1011 1213 > 0x0030: 1415 1617 1819 > 00:20:19.321941 arp who-has 172.16.0.2 tell 172.16.0.3 > 0x0000: 0001 0800 0604 0001 00c0 5c12 c40d ac10 > 0x0010: 0003 0000 0000 0000 ac10 0002 > 00:20:19.322301 arp reply 172.16.0.2 is-at 00:0c:29:ef:a2:98 > 0x0000: 0001 0800 0604 0002 000c 29ef a298 ac10 > 0x0010: 0002 00c0 5c12 c40d ac10 0003 0000 0000 > 0x0020: 0000 0000 0000 0000 0000 0000 0000 > 00:20:19.333624 IP 10.0.0.2> 10.0.0.1: ICMP echo request, id 59752, seq > 28, length 64 > 0x0000: 4500 0054 0000 4000 3f01 27a7 0a00 0002 > 0x0010: 0a00 0001 0800 de86 e968 001c 6005 0f48 > 0x0020: c9a3 0c00 0809 0a0b 0c0d 0e0f 1011 1213 > 0x0030: 1415 1617 1819 > > There was no MPLS-DATA in the packet, and the packet forward to 172.16.0.2in original IP packet. > ________________________________ > > Date: Wed, 23 Apr 2008 11:37:57 +0300 > > From: adr...@gm... > > To: orp...@ms... > > Subject: Re: [mpls-linux-general] Does mpls-linux support for add label > to normal IP packet? > > CC: mpl...@li... > > > > Ok, concentrate on LER1; > > It will encapsulate in MPLS only packets that go to 10.0.0.2/32. The > rest of the traffic will be plain IP. > > > > Try again and look for error messages after each command. Make sure > you're running the mpls-enabled kernel (dmesg | grep mpls) and also that you > have the mpls4 module loaded (lsmod | grep mpls). > > > > After starting a ping to 10.0.0.2 issue these commands on ler1: > > mpls nhlfe show > > ip route show > > > > If all is setup correctly, tcpdump will show the MPLS header between > Ethernet and IP. > > > > You only need iptables if you want to create more specific rules to use > for MPLS. Something like you want only FTP traffic to go through MPLS or you > want traffic from source X to go through MPLS, etc. You can use iproute to > specify that you want traffic going to destination X to go through MPLS. > > > > Cheers, > > Adrian > > > > 2008/4/23 刘磊 <orp...@ms...>: > > > > Hello > > Thank You first. > > I had tried "IPv4 over MPLS: two LER example for mpls-linux-1.95x", same > as the example. > > BUT, I had not find in the packets(above the ether layer, and below the > IP layer) out from LER1's eth2 by tcpdump. > > Does it's MUST with iptables to do this? > > > > ________________________________ > >> Date: Wed, 23 Apr 2008 09:25:18 +0300 > >> From: adr...@gm... > >> To: orp...@ms... > >> Subject: Re: [mpls-linux-general] Does mpls-linux support for add label > to normal IP packet? > >> CC: mpl...@li... > >> > >> Hello, > >> > >> The mpls command allows you to create labels and the route/iptables > commands allow you to map certain IP flows to created labels. > >> Please, better explain your problem (which example you used), and what > was the problem so that we can better help. > >> > >> For a small overview of what mpls-linux does and how to use it, look > here: > >> http://mpls-linux.sourceforge.net/ > >> http://www.elcom.pub.ro/~adrian.popa/mpls-linux/mpls-linux-docs/ > >> > >> Cheers, > >> Adrian > >> > >> 2008/4/23 刘磊 <orp...@ms...>: > >> > >> Hi all: > >> I'm a new bie. > >> And I had some problem in MPLS-Linux. > >> Does mpls-linux support for add label to normal IP packet? > >> I'm failed with "Links to examples", because the LER1 doesn't add label > to the normal IP packets. > >> Which function will do that in the source code? > >> _________________________________________________________________ > >> 新年换新颜，快来妆扮自己的MSN给心仪的TA一个惊喜！ > >> http://im.live.cn/emoticons/?ID=18 > >> > >> > >> > ------------------------------------------------------------------------- > >> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > >> Don't miss this year's exciting event. There's still time to save $100. > >> Use priority code J8TL2D2. > >> > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > >> _______________________________________________ > >> mpls-linux-general mailing list > >> mpl...@li... > >> https://lists.sourceforge.net/lists/listinfo/mpls-linux-general > > > > _________________________________________________________________ > > 多个邮箱同步管理，live mail客户端万人抢用中 > > http://get.live.cn/product/mail.html > > > > > > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > > Don't miss this year's exciting event. There's still time to save $100. > > Use priority code J8TL2D2. > > > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > > _______________________________________________ > > mpls-linux-general mailing list > > mpl...@li... > > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general > > _________________________________________________________________ > 用手机MSN聊天写邮件看空间，无限沟通，分享精彩！ > http://mobile.msn.com.cn/ > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save $100. > Use priority code J8TL2D2. > > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > _______________________________________________ > mpls-linux-general mailing list > mpl...@li... > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general > > |
