Linux static route priority

linux static route priority

В FreeBSD принципиальных отличий нет, но некоторые команды отличаются (настройка мостов и VLAN’ов). Рассматриваемая последовательность действий будет работать и в других дистрибутивах Linux. В качестве операционной системы используется Debian GNU/Linux.

Указание максимального количества VLAN (максимальное значение варьируется в зависимости от модели коммутатора):. По умолчанию на коммутаторах HP ProCurve доступно не максимальное количество VLAN. Это можно изменить с помощью команды max-vlans. Как правило, можно создать 8 VLAN.

The default hash table is called 800:: and all filtering starts there. This will be sent to hash table 2:, which we created earlier. Then we select the source address, which lives as position 12, 13, 14 and 15 in the IP header, and indicate that we are only interested in the last part. 0/16 hashkey mask 0x000000ff at 12 link 2: Ok, some numbers need explaining. Next create a ‘hashing filter’ that directs traffic to the right entry in the hashing table: # tc filter add dev eth1 protocol ip parent 1:0 prio 5 u32 ht 800:: match ip src 1.

C0 is binary for 11000000, 3F for 00111111, so these two together will match everything. The second class matches the rest. The ‘split qdisc’ is 1:0, which is where the choice will be made. The first class matches bits 7 & 6, and thus corresponds to ‘interactive’ and ‘control’ traffic.

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In this case, you would be defining “eth0:0 and eth0:1” as the virtual interfaces for eth0 and “eth1:0 and eth1:1” for the virtual interfaces for eth1. If you’re not sure what this means or how to set it up, the SLES documentation about virtual interfaces should help. Okay, here’s the set of rules for this scenario. I assume that each interface actually has _two_ virtual IP addresses.

If you have a 100Mbit NIC and you have a router that has a 256kbit link, you have to make sure you are not sending more data than your router can handle. Otherwise, it will be the router who is controlling the link and shaping the available bandwith. We need to ‘own the queue’ so to speak, and be the slowest link in the chain. Luckily this is easily possible. You also have to be sure you are controlling the bottleneck of the link.

As of 9 November, the racoon version in Alexey’s iptools distribution can be compiled, although you may need to remove #include in two files. 5 IPSEC implementation works with the KAME ‘racoon’ IKE daemon. Alternatively, I’ve supplied a precompiled version.

1 dev eth0 table uplink0
ip rule add from 10. 201/32 dev eth0 src 10. 201 table uplink0
ip route add default via 10. 201 table uplink0
ip route add 10. 201/32 table uplink0
ip rule add to 10. #ip route add 10. 0/24 dev eth0 src 10.

Далее к коммутатору подключили хост D. Если хост A отправляет фрейм хосту D, то для коммутатора это unknown unicast фрейм, так как в таблице коммутации нет записи о MAC-адресе D. В соответствии со своими правилами коммутатор выполняет flooding и передает фрейм на все порты, кроме 1 (с которого фрейм был получен).

This fixed a problem I was having with an FTP server with two NICS. I could only get it to work with one default gateway at a time. Great article – thanks so much. Using what I found here, I created two additional entries, one for each NIC. I had to use a slight variation on the ip route statement (using CentOS) – it was: “ip route add 10. 1 dev eth0 table inside” instead of dev eth0 src.

5 KiB) TX bytes:3636 (3. Eth0 Link encap:Ethernet Hardware Adresse 00:50:56:bf:01:1c
inet Adresse:192. 0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metrik:1
RX packets:683 errors:0 dropped:0 overruns:0 frame:0
TX packets:52 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:1000
RX bytes:54805 (53.

When a packet is received, a network device examines the packet and matches it to the routing table entry providing the best match for its destination. The table then provides the device with instructions for sending the packet to the next hop on its route across the network. A routing table contains the information necessary to forward a packet along the best path toward its destination. Each packet contains information about its origin and destination.

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