Differences

This shows you the differences between two versions of the page.

--- en:dpi:bras_bng:use_cases:brasl2softrouter [2023/08/30 08:57] – elena.krasnobryzh
+++ en:dpi:bras_bng:use_cases:brasl2softrouter [2024/09/26 15:29] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-====== brasl2softrouter ======
+======  Example of Soft-Router (FRR) configuration for BNG L2-Connected ======
+{{indexmenu_n>6}}
+The Soft-Router feature is used to announce NAT Pool subnets and authorized subscriber IP addresses for BNG L2-connected using dynamic routing protocols (BGP, OSPF, IS-IS). The principle of operation and configuration is described in the [[en:dpi:dpi_components:router|Soft-Router]] section.
+==== Use case description: ====
+The SSG (2x10G in port, 2x10G out port) is implemented in-line of 2x10G links, which are aggregated in LAG. The SSG is configured in BRAS L2 PPPoE mode, NAT Pool 100.0.0.0/24 is created.
+{{ dpi:qoe:use_cases:brasl2softrouter:router_scenario.png?nolink&600 |}}
+In this scenario we will assume that the docking network is 192.168.123.64/30, the IP on the SSG side is 192.168.123.65, the IP on the upstream router side is 192.168.123.66, ASN are 65501 and 65502 respectively.
+Let's configure FRR as a router with a CLI most similar to the usual and familiar to cisco-like operators.
+The out-interface of the SSG, in this case 13-00.0, is specified as the interface from which traffic will be diverted.
+=== SSG (FastDPI) configuration: ===
+/etc/dpi/fastdpi.conf:
+  router=1
+  router_kernel_table=254
+  router_subs_announce=6
+  router_netns=router
+  router_device {
+  device=13-00.0
+  tap=dpi
+  peer=rib
+  subnet=192.168.123.65/30
+  subnet=224.0.0.5/32
+  subnet=224.0.0.6/32
+  }
+=== Netns configuration: ===
+  ip netns add router
+  ip link add dpi type veth peer name rib netns router
+  ip netns exec router ip address add 192.168.123.65/30 dev rib
+  ip netns exec router ip link set dev rib arp on
+  ip netns exec router ethtool -K rib tx off
+  ip link set dev dpi arp off
+  echo 1>/proc/sys/net/ipv6/conf/dpi/disable_ipv6
+  ip link set dpi up
+  ip netns exec router ip link set lo up
+  ip netns exec router ip link set rib up
+  firewall-cmd --zone=internal --add-source=192.168.123.65/24
+  firewall-cmd --zone=internal --add-rich-rule='rule family=ipv4 source address=192.168.123.65/24 accept
+We recommend adding these commands to the script and then adding the script to autorun.
+=== FRR daemons setup: ==
+/etc/frr/daemons:
+<code>bgpd=yes
+ospfd=yes
+ospf6d=yes
+ripd=no
+ripngd=no
+isisd=no
+pimd=no
+nhrpd=no
+eigrpd=no
+sharpd=no
+pbrd=no
+bfdd=no
+fabricd=no
+vrrpd=no
+vtysh_enable=yes
+zebra_options="  -A 127.0.0.1 -s 90000000 --vrfwnetns"
+bgpd_options="   -A 127.0.0.1"
+ospfd_options="  -A 127.0.0.1"
+ospf6d_options=" -A ::1"
+ripd_options="   -A 127.0.0.1"
+ripngd_options=" -A ::1"
+isisd_options="  -A 127.0.0.1"
+pimd_options="   -A 127.0.0.1"
+nhrpd_options="  -A 127.0.0.1"
+eigrpd_options=" -A 127.0.0.1"
+sharpd_options=" -A 127.0.0.1"
+pbrd_options="   -A 127.0.0.1"
+staticd_options="-A 127.0.0.1"
+bfdd_options="   -A 127.0.0.1"
+fabricd_options="-A 127.0.0.1"
+vrrpd_options="  -A 127.0.0.1"
+</code>
+=== FRR (OSPF) setup: ===
+/etc/frr/frr.conf:
+  frr version 7.5
+  frr defaults traditional
+  hostname bras-demo-01
+  no ip forwarding
+  no ipv6 forwarding
+  no service integrated-vtysh-config
+  !
+  vrf router
+   netns /run/netns/router
+   exit-vrf
+  !
+  router ospf vrf router
+   network 192.168.123.0/24 area 0
+  !
+  line vty
+  !
+=== FRR (BGP) setup: ===
+/etc/frr/frr.conf
+  frr version 7.5
+  frr defaults traditional
+  hostname bras-demo-01
+  log file /var/log/frr/debug.log
+  log syslog
+  no ip forwarding
+  no ipv6 forwarding
+  service integrated-vtysh-config
+  !
+  router bgp 65501 vrf router
+   bgp router-id 192.168.123.65
+   neighbor 192.168.123.66 remote-as 65502
+   !
+   address-family ipv4 unicast
+    redistribute kernel
+    neighbor 192.168.123.66 route-map PERMIT_ALL in
+    neighbor 192.168.123.66 route-map PERMIT_ALL out
+    neighbor 192.168.123.66 soft-reconfiguration inbound
+   exit address-family
+  !
+  route-map PERMIT_ALL permit 10
+  !
+  line vty
+  !

Profile

Settings

Differences