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Nokia SR Linux and Arista cEOS

Description A Nokia SR Linux connected back-to-back with Arista cEOS
Components Nokia SR Linux, Arista cEOS
Resource requirements1 2
2 GB
Topology file srlceos01.clab.yml
Name srlceos01
Version information2 containerlab:0.9.0, srlinux:20.6.3-145, ceos:4.25.0F, docker-ce:19.03.13

Description#

A lab consists of an SR Linux node connected with Arista cEOS via a point-to-point ethernet link. Both nodes are also connected with their management interfaces to the containerlab docker network.

Use cases#

This lab allows users to launch basic interoperability scenarios between Nokia SR Linux and Arista cEOS operating systems.

BGP#

This lab demonstrates a simple iBGP peering scenario between Nokia SR Linux and Arista cEOS. Both nodes exchange NLRI with their loopback prefix making it reachable.

Configuration#

Once the lab is deployed with containerlab, use the following configuration instructions to make interfaces configuration and enable BGP on both nodes.

Get into SR Linux CLI with docker exec -it clab-srlceos01-srl sr_cli and start configuration

# enter candidate datastore
enter candidate

# configure loopback and data interfaces
set / interface ethernet-1/1 admin-state enable
set / interface ethernet-1/1 subinterface 0 admin-state enable
set / interface ethernet-1/1 subinterface 0 ipv4 address 192.168.1.1/24

set / interface lo0 subinterface 0 admin-state enable
set / interface lo0 subinterface 0 ipv4 address 10.10.10.1/32
set / network-instance default interface ethernet-1/1.0
set / network-instance default interface lo0.0

# configure BGP
set / network-instance default protocols bgp admin-state enable
set / network-instance default protocols bgp router-id 10.10.10.1
set / network-instance default protocols bgp autonomous-system 65001
set / network-instance default protocols bgp group ibgp ipv4-unicast admin-state enable
set / network-instance default protocols bgp group ibgp export-policy export-lo
set / network-instance default protocols bgp neighbor 192.168.1.2 admin-state enable
set / network-instance default protocols bgp neighbor 192.168.1.2 peer-group ibgp
set / network-instance default protocols bgp neighbor 192.168.1.2 peer-as 65001

# create export policy
set / routing-policy policy export-lo statement 10 match protocol local
set / routing-policy policy export-lo statement 10 action accept

# commit config
commit now

Get into cEOS CLI with docker exec -it clab-srlceos01-ceos Cli and start configuration

# enter configuration mode
configure
ip routing

# configure loopback and data interfaces
interface Ethernet1
  no switchport
  ip address 192.168.1.2/24
exit
interface Loopback0
  ip address 10.10.10.2/32
exit

# configure BGP
router bgp 65001
  router-id 10.10.10.2
  neighbor 192.168.1.1 remote-as 65001
  network 10.10.10.2/32
exit

Verification#

Once BGP peering is established, the routes can be seen in GRT of both nodes:

A:srl# show network-instance default route-table ipv4-unicast summary | grep bgp
| 10.10.10.2/32                 | 0     | true       | bgp             | 0       | 170   | 192.168.1.2 (indirect)                   | None              |
ceos>show ip route

VRF: default
Codes: C - connected, S - static, K - kernel,
    O - OSPF, IA - OSPF inter area, E1 - OSPF external type 1,
    E2 - OSPF external type 2, N1 - OSPF NSSA external type 1,
    N2 - OSPF NSSA external type2, B - BGP, B I - iBGP, B E - eBGP,
    R - RIP, I L1 - IS-IS level 1, I L2 - IS-IS level 2,
    O3 - OSPFv3, A B - BGP Aggregate, A O - OSPF Summary,
    NG - Nexthop Group Static Route, V - VXLAN Control Service,
    DH - DHCP client installed default route, M - Martian,
    DP - Dynamic Policy Route, L - VRF Leaked,
    RC - Route Cache Route

Gateway of last resort:
K        0.0.0.0/0 [40/0] via 172.20.20.1, Management0

B I      10.10.10.1/32 [200/0] via 192.168.1.1, Ethernet1
C        10.10.10.2/32 is directly connected, Loopback0
C        172.20.20.0/24 is directly connected, Management0
C        192.168.1.0/24 is directly connected, Ethernet1

Data plane confirms that routes have been programmed to FIB:

A:srl# ping 10.10.10.2 network-instance default
Using network instance default
PING 10.10.10.2 (10.10.10.2) 56(84) bytes of data.
64 bytes from 10.10.10.2: icmp_seq=1 ttl=64 time=3.47 ms


  1. Resource requirements are provisional. Consult with the installation guides for additional information. 

  2. The lab has been validated using these versions of the required tools/components. Using versions other than stated might lead to a non-operational setup process.