Cfxtrjtrk

I have a ISP 4321 Router in my Cisco Packet Tracer. and I added a NIM-ES2-4 module in the Router, that provides four switching ports. and now, I configured two VLANs to the two switch port of them. and now it created the two VLANs, you can see below, there are Vlan10 and Vlan11:

Router#show ip interface brief 

Interface              IP-Address      OK? Method Status                Protocol 

GigabitEthernet0/0/0   unassigned      YES unset  administratively down down 

GigabitEthernet0/0/1   unassigned      YES unset  administratively down down 

GigabitEthernet0/1/0   unassigned      YES unset  up                    up 

GigabitEthernet0/1/1   unassigned      YES unset  up                    up 

GigabitEthernet0/1/2   unassigned      YES unset  up                    down 

GigabitEthernet0/1/3   unassigned      YES unset  up                    down 

Vlan1                  unassigned      YES unset  administratively down down 

Vlan10                 10.10.10.1      YES manual up                    up 

Vlan11                 10.10.20.1      YES manual up                    up

I want to know whether the Vlan10 and Vlan11 are two virtual Router ports?

If the Vlan10 and VLan11 are two virtual Router ports. I have configured the IP address on them, you can check the upper data. and I assigned the Vlan10 to GigabitEthernet0/1/0, the Vlan11 to GigabitEthernet0/1/1, all are access mode.

but now I cannot from 10.10.10.2 to ping 10.10.20.1:

Router>ping 10.10.20.1



Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.10.20.1, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

the Center Router(Router11)'s route is bellow:

Router#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, E - EGP

       i - IS-IS, 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



Gateway of last resort is not set



     10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks

C       10.10.10.0/24 is directly connected, Vlan10

L       10.10.10.1/32 is directly connected, Vlan10

C       10.10.20.0/24 is directly connected, Vlan11

L       10.10.20.1/32 is directly connected, Vlan11

So my questions are:

1. Whether the Vlan10 and Vlan20 in the Center Router are two virtual router interfaces?


2. Why the Router 10 can not ping the Router11?

1. Yes, these also called switch virtual interfaces or SVI.


2. Because your Router10 don't know how to get to 10.10.20.0/24 network.
   Add route to Router10 configuration:

#(conf-t) ip route 10.10.20.0 255.255.255.0 10.10.10.1