Simple BGP
Topology as per the repo source <--> xr-1 <--> xr-2 <--> dest
XR-Compose
Run the xr-compose script to generate the docker-compose.yml from the docker-compose.xr.yml
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$ sudo ~/xr-compose -i localhost/ios-xr:7.7.1
INFO - Writing output docker-compose YAML to docker-compose.yml
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$
Note: I copied the xrd-tools scripts in the home directory
Launch Topology
Launch the topology with docker-compose
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$ sudo docker-compose up -d
Creating network "simple-bgp_xrd-2-dest" with the default driver
Creating network "simple-bgp_source-xrd-1" with the default driver
Creating network "simple-bgp_mgmt" with the default driver
Creating network "xr-1-gi1-xr-2-gi0" with the default driver
Creating volume "xr-1" with default driver
Creating volume "xr-2" with default driver
Pulling dest (alpine:3.15)...
3.15: Pulling from library/alpine
9621f1afde84: Pull complete
Digest: sha256:69463fdff1f025c908939e86d4714b4d5518776954ca627cbeff4c74bcea5b22
Status: Downloaded newer image for alpine:3.15
Creating xr-2 ... done
Creating xr-1 ... done
Creating dest ... done
Creating source ... done
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$
The docker compose file uses an alpine:3.15 docker image to emulate as hosts, which is pulled from the docker repository when used for the first time
Containers
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$ sudo docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
d9c64d9342f4 localhost/ios-xr:7.7.1 "/bin/sh -c /sbin/xr…" About a minute ago Up About a minute xr-1
c06ada3e07b1 alpine:3.15 "/bin/sh -c 'ip rout…" About a minute ago Up About a minute source
5a7981d7fde3 alpine:3.15 "/bin/sh -c 'ip rout…" About a minute ago Up About a minute dest
96ae55e77f82 localhost/ios-xr:7.7.1 "/bin/sh -c /sbin/xr…" About a minute ago Up About a minute xr-2
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$
Container Networks
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$ sudo docker network ls
NETWORK ID NAME DRIVER SCOPE
6e695b3d51ed bridge bridge local
3fa096a64551 host host local
98eac983e612 none null local
916aed1cab06 simple-bgp_mgmt bridge local
569004635c3f simple-bgp_source-xrd-1 bridge local
57eb8370acc0 simple-bgp_xrd-2-dest bridge local
5749aabe0b90 xr-1-gi1-xr-2-gi0 bridge local
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$
End to End Network Reachability
As per the docker-compose comments, The IP on source is 10.1.1.2 and on dest is 10.3.1.3
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$ sudo docker exec source traceroute 10.3.1.3
traceroute to 10.3.1.3 (10.3.1.3), 30 hops max, 46 byte packets
1 xr-1.simple-bgp_source-xrd-1 (10.1.1.3) 1.585 ms 1.090 ms 0.857 ms
2 10.2.1.3 (10.2.1.3) 2.722 ms 2.814 ms 2.174 ms
3 10.3.1.3 (10.3.1.3) 2.377 ms 2.797 ms 2.457 ms
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$
Cisco XRd Checks
I couldn't find an easier way to login to the docker containers running XRd, other than using docker attach as below, used ctrl-\ as escape character to detach from the container
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$ sudo docker attach --detach-keys=ctrl-\\ xr-1
!!!!!!!!!!!!!!!!!!!! NO root-system username is configured. Need to configure root-system username. !!!!!!!!!!!!!!!!!!!!
--- Administrative User Dialog ---
Enter root-system username: cisco
Enter secret:
Enter secret again:
Use the 'configure' command to modify this configuration.
User Access Verification
Username: cisco
Password:
RP/0/RP0/CPU0:ios#sh route
Sat Aug 20 19:46:12.151 UTC
Codes: C - connected, S - static, R - RIP, B - BGP, (>) - Diversion path
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - ISIS, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, su - IS-IS summary null, * - candidate default
U - per-user static route, o - ODR, L - local, G - DAGR, l - LISP
A - access/subscriber, a - Application route
M - mobile route, r - RPL, t - Traffic Engineering, (!) - FRR Backup path
Gateway of last resort is not set
C 10.1.1.0/24 is directly connected, 00:01:24, GigabitEthernet0/0/0/0
L 10.1.1.3/32 is directly connected, 00:01:24, GigabitEthernet0/0/0/0
C 10.2.1.0/24 is directly connected, 00:01:24, GigabitEthernet0/0/0/1
L 10.2.1.2/32 is directly connected, 00:01:24, GigabitEthernet0/0/0/1
B 10.3.1.0/24 [200/0] via 10.2.1.3, 00:00:46
C 172.30.0.0/24 is directly connected, 00:01:24, MgmtEth0/RP0/CPU0/0
L 172.30.0.2/32 is directly connected, 00:01:24, MgmtEth0/RP0/CPU0/0
RP/0/RP0/CPU0:ios#sh bgp summary
Sat Aug 20 19:46:14.642 UTC
BGP router identifier 10.2.1.2, local AS number 100
BGP generic scan interval 60 secs
Non-stop routing is enabled
BGP table state: Active
Table ID: 0xe0000000 RD version: 9
BGP main routing table version 9
BGP NSR Initial initsync version 5 (Reached)
BGP NSR/ISSU Sync-Group versions 0/0
BGP scan interval 60 secs
BGP is operating in STANDALONE mode.
Process RcvTblVer bRIB/RIB LabelVer ImportVer SendTblVer StandbyVer
Speaker 9 9 9 9 9 0
Neighbor Spk AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down St/PfxRcd
10.2.1.3 0 100 4 4 9 0 0 00:00:54 3
RP/0/RP0/CPU0:ios#sh bgp neighbor 10.2.1.3 routes
Sat Aug 20 19:46:20.202 UTC
BGP router identifier 10.2.1.2, local AS number 100
BGP generic scan interval 60 secs
Non-stop routing is enabled
BGP table state: Active
Table ID: 0xe0000000 RD version: 9
BGP main routing table version 9
BGP NSR Initial initsync version 5 (Reached)
BGP NSR/ISSU Sync-Group versions 0/0
BGP scan interval 60 secs
Status codes: s suppressed, d damped, h history, * valid, > best
i - internal, r RIB-failure, S stale, N Nexthop-discard
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
* i10.2.1.0/24 10.2.1.3 0 100 0 ?
*>i10.3.1.0/24 10.2.1.3 0 100 0 ?
* i172.30.0.0/24 10.2.1.3 0 100 0 ?
Processed 3 prefixes, 3 paths
RP/0/RP0/CPU0:ios#sh bgp neighbor 10.2.1.3 advertised-routes
Sat Aug 20 19:46:23.621 UTC
Network Next Hop From AS Path
10.1.1.0/24 10.2.1.2 Local ?
10.2.1.0/24 10.2.1.2 Local ?
172.30.0.0/24 10.2.1.2 Local ?
Processed 3 prefixes, 3 paths
RP/0/RP0/CPU0:ios#read escape sequence
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$
Shutdown Topology
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$ sudo docker-compose down
Stopping xr-1 ... done
Stopping source ... done
Stopping dest ... done
Stopping xr-2 ... done
Removing xr-1 ... done
Removing source ... done
Removing dest ... done
Removing xr-2 ... done
Removing network simple-bgp_xrd-2-dest
Removing network simple-bgp_source-xrd-1
Removing network simple-bgp_mgmt
Removing network xr-1-gi1-xr-2-gi0
lab@xrdlab:~/github/xrd-tools/samples/xr_compose_topos/simple-bgp$