Lab – Troubleshooting Inter-VLAN Routing
© 2013 Cisco andor its affiliates. All rights reserved. This document is Cisco Public. Page 6 of 21
Are there any networks missing in the routing table? If so, which networks? ____________________________________________________________________________________
192.168.1.0, 192.168.10.0, 192.168.20.0 What is one possible reason that a route would be missing from the routing table?
____________________________________________________________________________________ Interface administratively down, no ip address
b. On R1, issue the show ip interface brief command. R1 show ip interface brief
Interface IP-Address OK? Method Status Protocol Embedded-Service-Engine00 unassigned YES unset administratively down down
GigabitEthernet00 unassigned YES unset administratively down down GigabitEthernet01 unassigned YES unset administratively down down
GigabitEthernet01.1 192.168.1.1 YES manual administratively down down GigabitEthernet01.10 192.168.11.1 YES manual administratively down down
GigabitEthernet01.20 192.168.20.1 YES manual administratively down down Serial000 unassigned YES unset administratively down down
Serial001 unassigned YES unset administratively down down Loopback0 209.165.200.225 YES manual up up
Based on the output, are there any interface issues on the router? If so, what commands would resolve the issues?
____________________________________________________________________________________ ____________________________________________________________________________________
____________________________________________________________________________________ R1config interface g01
R1config-if no shutdown R1config-if interface g01.10
R1configs-if ip address 192.168.10.1 255.255.255.0 c. On R1, re-issue the show ip route command.
R1 show ip route
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 + - replicated route, - next hop override
Gateway of last resort is not set 192.168.1.024 is variably subnetted, 2 subnets, 2 masks
C 192.168.1.024 is directly connected, GigabitEthernet01.1 L 192.168.1.132 is directly connected, GigabitEthernet01.1
192.168.11.024 is variably subnetted, 2 subnets, 2 masks
Lab – Troubleshooting Inter-VLAN Routing
© 2013 Cisco andor its affiliates. All rights reserved. This document is Cisco Public. Page 7 of 21
C 192.168.11.024 is directly connected, GigabitEthernet01.10 L 192.168.11.132 is directly connected, GigabitEthernet01.10
192.168.20.024 is variably subnetted, 2 subnets, 2 masks C 192.168.20.024 is directly connected, GigabitEthernet01.20
L 192.168.20.132 is directly connected, GigabitEthernet01.20 209.165.200.024 is variably subnetted, 2 subnets, 2 masks
C 209.165.200.22427 is directly connected, Loopback0 L 209.165.200.22532 is directly connected, Loopback0
Verify that all networks are available in the routing table. If not, continue to troubleshoot until all networks are present.
Part 3: Verify VLAN Configuration, Port Assignment, and Trunking
In Part 3, you will verify that the correct VLANs exist on both S1 and S2 and that trunking is configured correctly.
Step 1: Verify VLAN configuration and port assignments.
a. On S1, enter the show vlan brief command to view the VLAN database. S1 show vlan brief
