Cisco dCloud Lab - Integrated Routing and Bridging (IRB) Lab using the Cisco 5921 Embedded Services Router - Step-by-step guide

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Integrated Routing and Bridging (IRB) Lab using the Cisco 5921 Embedded Services Router

This configuration is used with “Introduction to the Cisco 5921 Embedded Services Router v1” in dCloud.

1) Log into dCloud. Under Internet of Everything or Training, find the lab / demo, "Introduction to the Cisco 5921 Embedded Services Router v1”

2) Launch a dCloud session using this lab and follow the instructions to connect using the AnyConnect client. Do the actual AnyConnect access after step 4 as this will allow time for the dCloud session to start. Please be sure to specify "NOW" as the launch time. This lab takes approximately 5 minutes to be ready for use.

3) Begin by looking at the configuration view links for the intended changes to the router configurations to implement the desired feature. The changes are differentiated from the rest of the configuration using Boldface Orange text.

Cisco dCloud Lab - Integrated Routing and Bridging (IRB) on the 5921 ESR - c5921_ubuntu32_1 - View

https://communities.cisco.com/docs/DOC-63988

4) Go to the following DevNet Community links and download the configurations to be used in this lab. Please use the download links for this.

Cisco dCloud Lab - Integrated Routing and Bridging (IRB) on the 5921 ESR - Download

https://communities.cisco.com/docs/DOC-62561

5) On  c5921_ubuntu32_1  shutdown the following port ethernet 0/0.

6) Remove the IP addresses from the following ports: ethernet 0/1, 0/2, 0/3. (no ip addr)

7) Please add all the highlighted (bold orange) commands in the configuration.

8) After a waiting few seconds for OSPF to re-converge, you should see the following routing table  on c5921_ubuntu32_1:

*Dec  1 05:07:08.310: %OSPF-5-ADJCHG: Process 100, Nbr 10.0.0.121 on BVI1 from LOADING to FULL, Loading Done

c5921_ubuntu32_1#sh ip rou

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP

       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

       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

       ia - IS-IS inter area, * - candidate default, U - per-user static route

       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP

       a - application route

       + - replicated route, % - next hop override

Gateway of last resort is 198.18.134.120 to network 0.0.0.0

S*    0.0.0.0/0 [1/0] via 198.18.134.120

      10.0.0.0/32 is subnetted, 2 subnets

C        10.0.0.120 is directly connected, Loopback0

O        10.0.0.121 [110/2] via 172.23.2.2, 00:00:00, BVI1

      172.23.0.0/16 is variably subnetted, 5 subnets, 2 masks

O        172.23.1.0/24 [110/2] via 172.23.2.2, 00:00:00, BVI1

C        172.23.2.0/24 is directly connected, BVI1

L        172.23.2.1/32 is directly connected, BVI1

O        172.23.3.0/24 [110/2] via 172.23.2.2, 00:00:00, BVI1

O        172.23.4.0/24 [110/2] via 172.23.2.2, 00:00:00, BVI1

C     198.18.128.0/18 is directly connected, Ethernet1/0

      198.18.134.0/32 is subnetted, 1 subnets

L        198.18.134.131 is directly connected, Ethernet1/0

9) Notice that since we set the ip address of BVI1 to 172.23.2.1 the neighbor relationship is established via the corresponding subnet on c5921_ubuntu32_2 in this case 172.23.2.2.

If we have ethernet 0/1, 0/2, 0/3 for c5921_ubuntu32_1 bridging at layer 2 and then routing, effectively the same as using a switching HWIC in one of the ISR's, we should be able to set the ip address of BVI1 to subnet 3 or 4 and our Layer 3 should re-converge.

Go ahead and try changing BVI1 to 172.23.3.1 and observe the following:

c5921_ubuntu32_1(config)#interface BVI1

c5921_ubuntu32_1(config-if)#ip address 172.23.3.1 255.255.255.0

c5921_ubuntu32_1(config-if)#

*Dec  1 05:08:25.454: %OSPF-5-ADJCHG: Process 100, Nbr 10.0.0.121 on BVI1 from FULL to DOWN, Neighbor Down: Interface down or detached

c5921_ubuntu32_1(config-if)#

*Dec  1 05:08:30.251: %OSPF-5-ADJCHG: Process 100, Nbr 10.0.0.121 on BVI1 from LOADING to FULL, Loading Done

c5921_ubuntu32_1(config-if)#do sh ip rou

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP

       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

       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

       ia - IS-IS inter area, * - candidate default, U - per-user static route

       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP

       a - application route

       + - replicated route, % - next hop override

Gateway of last resort is 198.18.134.120 to network 0.0.0.0

S*    0.0.0.0/0 [1/0] via 198.18.134.120

      10.0.0.0/32 is subnetted, 2 subnets

C        10.0.0.120 is directly connected, Loopback0

O        10.0.0.121 [110/2] via 172.23.3.2, 00:00:30, BVI1

      172.23.0.0/16 is variably subnetted, 5 subnets, 2 masks

O        172.23.1.0/24 [110/2] via 172.23.3.2, 00:00:30, BVI1

O        172.23.2.0/24 [110/2] via 172.23.3.2, 00:00:30, BVI1

C        172.23.3.0/24 is directly connected, BVI1

L        172.23.3.1/32 is directly connected, BVI1

O        172.23.4.0/24 [110/2] via 172.23.3.2, 00:00:30, BVI1

C     198.18.128.0/18 is directly connected, Ethernet1/0

      198.18.134.0/32 is subnetted, 1 subnets

L        198.18.134.131 is directly connected, Ethernet1/0

10) Lastly, try changing BVI1 to 172.23.4.1 and observe the following:

c5921_ubuntu32_1(config-if)#ip address 172.23.4.1 255.255.255.0

c5921_ubuntu32_1(config-if)#

*Dec  1 05:09:34.532: %OSPF-5-ADJCHG: Process 100, Nbr 10.0.0.121 on BVI1 from FULL to DOWN, Neighbor Down: Interface down or detached

c5921_ubuntu32_1(config-if)#

*Dec  1 05:09:39.374: %OSPF-5-ADJCHG: Process 100, Nbr 10.0.0.121 on BVI1 from LOADING to FULL, Loading Done

c5921_ubuntu32_1(config-if)#do sh ip rou

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP

       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

       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

       ia - IS-IS inter area, * - candidate default, U - per-user static route

       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP

       a - application route

       + - replicated route, % - next hop override

Gateway of last resort is 198.18.134.120 to network 0.0.0.0

S*    0.0.0.0/0 [1/0] via 198.18.134.120

      10.0.0.0/32 is subnetted, 2 subnets

C        10.0.0.120 is directly connected, Loopback0

O        10.0.0.121 [110/2] via 172.23.4.2, 00:00:10, BVI1

      172.23.0.0/16 is variably subnetted, 5 subnets, 2 masks

O        172.23.1.0/24 [110/2] via 172.23.4.2, 00:00:10, BVI1

O        172.23.2.0/24 [110/2] via 172.23.4.2, 00:00:10, BVI1

O        172.23.3.0/24 [110/2] via 172.23.4.2, 00:00:10, BVI1

C        172.23.4.0/24 is directly connected, BVI1

L        172.23.4.1/32 is directly connected, BVI1

C     198.18.128.0/18 is directly connected, Ethernet1/0

      198.18.134.0/32 is subnetted, 1 subnets

L        198.18.134.131 is directly connected, Ethernet1/0

Note: Here is one more way to view it:

c5921_ubuntu32_1#sh ip ospf neighbor

Neighbor ID     Pri   State           Dead Time   Address         Interface

10.0.0.121        1   FULL/DR         00:00:36    172.23.4.2      BVI1

Conclusions:

This lab allowed you to verify that a particular Cisco IOS feature is supported on the 5921 ESR.

It introduced you to the DevNet community for IoT Embedded and specifically showed that there is a space to share and to post useful 5921 configurations and other companion code.

dCloud allowed you to launch in a few minutes what would take hours to build in your own lab.