VRF-VYATTA
vrf-vyatta is vyatta CLI extension for enabling VRF using Linux network namespace. It enables that you can configure vrf in top level of configure mode. It uses Linux namespace. Protocol static, ospf, and ospfv3 processes can be run on a vrf instance. And only vlan interface can be attached into VRF.
vrf-vyatta requires alternative quagga and iproute2.
Install quagga
vrf-vyatta requires quagga software that is applied multi vtysh patch. The patch url is http://lists.quagga.net/pipermail/quagga-dev/2012-July/009627.html. This patch can be applied to only quagga release 0.99.21.
% apt-get install -y libreadline-dev
% wget http://download.savannah.gnu.org/releases/quagga/quagga-0.99.21.tar.gz
% tar zxvf quagga-0.99.21.tar.gz
% cd quagga-0.99.21
% patch -p1 < quagga-multi-vty.patch
% ./configure --enable-vtysh --disable-ripd --disable-ripngd --disable-babeld --disable-watchquagga --disable-doc
% make
% make install
% /usr/local/sbin/zebra --version
lt-zebra version 0.99.21
Copyright 1996-2005 Kunihiro Ishiguro, et al.
This quagga routing softwares (ospfd, ospf6d, zebra) are installed to /usr/local/sbin, and vtysh is installed to /usr/local/bin directory. Don't change these prefixes because they are hardcoded into vyatta cli extensions for VRF. Preinstalled quagga softwares are installed to /usr/*bin directories.
Install iproute2
Preinstalled iproute2 (iproute2-ss120801) on VC6.5 can not exec commands on network namespace. So please install new iproute2 (I have tested with iproute2-ss121211).
% apt-get install -y pkg-config bison flex libdb-dev xtables-addons-source
% wget https://www.kernel.org/pub/linux/utils/net/iproute2/iproute2-3.7.0.tar.gz
% tar zxvf iproute2-3.7.0.tar.gz
% cd iproute2-3.7.0
% ./configure
% make
% make install
% /sbin/ip -V
ip utility, iproute2-ss121211
This ip command is installed to /sbin directory (original ip command is in /bin). This prefix is also used on cli extensions.
Install CLI Extension
% sh install.sh
install.sh installs vyatta cli extensions and some scripts. The prefix of extension scripts is xyatta.
Configuratin example
Content of VRF is linux network namespace. When new namespace is created, a quagga instance is executed on the namespace.
Configuration exapmle.
vyatta@vrf1# show vrf
vrf hoge {
interfaces {
ethernet eth1 {
vif 10 {
address 10.10.10.1/24
address 2001:db8::1/64
}
}
}
protocols {
ospf {
area 0.0.0.0 {
network 10.10.10.0/24
}
}
ospfv3 {
area 0.0.0.0 {
interface eth1.10
}
}
static {
route 192.168.0.0/24 {
next-hop 10.10.10.2 {
}
}
}
}
}
[edit]
vyatta@vrf1#
vyatta@vrf1# run show vrf hoge ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface RXmtL RqstL DBsmL
10.10.10.2 1 Full/DR 38.094s 10.10.10.2 eth1.10:10.10.10.1 0 0 0
[edit]
And, veth type interface pairs between two VRFs (including default VRF) is supported. You can create veth pair under configure mode interfaces veth-pair vethX. a veth interface can be attached under VRF.
Configuration exapmle.
vyatta@vrf1# show
interfaces {
veth-pair veth0 {
veth veth0a {
vrf hoge
}
}
vethernet veth0b {
address 172.16.0.1/24
}
}
protocols {
ospf {
area 0.0.0.0 {
network 172.16.0.0/24
}
}
}
vrf hoge {
interfaces {
vethernet veth0a {
address 172.16.0.2/24
}
}
protocols {
ospf {
area 0.0.0.0 {
network 172.16.0.0/24
}
}
}
}
[edit]
upa@neito# run show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface RXmtL RqstL DBsmL
172.16.31.1 1 Full/DR 38.961s 172.16.0.2 veth0b:172.16.0.1 0 0 0
[edit]
upa@neito# run show vrf hoge ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface RXmtL RqstL DBsmL
203.178.135.19 1 Full/Backup 30.933s 172.16.0.1 veth0a:172.16.0.2 0 0 0
[edit]
vethXa and vethXb are auto generated when veth-pair vethX is defiend.
Todo
- bgpd on VRF
- some operational commands
Contact
if you found bugs, please let me know.