192.168.0.0/24 Is variably subnetted, 6 subnets, 5 masks
D 192.168.0.0/24 is a summary, 00:00:02, Null0
C 192.168.0.0/25 is directly connected, FastEthernet0/0
D 192.168.0.128/27 [90/2172416] via 20.0.0.2, 00:00:02, Serial0/0/0
D 192.168.0.160/28 [90/2684416] via 20.0.0.13, 00:00:04, Serial0/0/1
[90/2684416] via 20.0.0.2, 00:00:02, Serial0/0/0
D 192.168.0.176/28 [90/2172416] via 20.0.0.13, 00:00:04, Serial0/0/1
D 192.168.0.192/26 [90/2172416] via 20.0.0.13, 00:00:04, Serial0/0/1
device |
interface |
Ip address |
Subnet mask |
R1 |
Fa 0/0 |
192.168.0.1 |
255.255.255.128 |
S 0/0/0 |
20.0.0.1 |
255.255.255.252 |
|
S 0/0/1 |
20.0.0.14 |
255.255.255.252 |
|
R2 |
Fa 0/0 |
192.168.0.193 |
255.255.255.192 |
Fa 0/1 |
192.168.0.177 |
255.255.255.240 |
|
S 0/0/0 |
20.0.0.9 |
255.255.255.252 |
|
S 0/0/1 |
20.0.0.13 |
255.255.255.255.252 |
|
R3 |
Fa 0/0 |
192.168.0.161 |
255.255.255.240 |
|
S 0/0/0 |
20.0.0.10 |
255.255.255.252 |
|
S 0/0/1 |
20.0.0.5 |
255.255.255.252 |
R4 |
Fa 0/0 |
192.168.0.129 |
255.255.255.248 |
S 0/0/0 |
20.0.0.2 |
255.255.255.252 |
|
S 0/0/1 |
20.0.0.6 |
255.255.255.252 |
8, 12 Make conclusions reached on the following network configurations
R3#show ip route
Gateway of last resort is 10.0.0.5 to network 20.0.0.0
10.0.0.0/30 Is subnetted, 2 subnets
D 10.0.0.0 [90/30720] via 10.0.0.5, 00:01:37, FastEthernet0/1
C 10.0.0.4 is directly connected, FastEthernet0/1
* 20.0.0.0/16 is subnetted, 1 subnets
D* 20.0.0.0 [90/156160] via 10.0.0.5, 00:01:37, FastEthernet0/1
C 30.0.0.0/8 is directly connected, Loopback0
D 192.168.30.0/24 [90/158720] via 10.0.0.5, 00:01:37, FastEthernet0/1
We can get this result after typing command R(config)#ip default-network. Now, the default entry received from a neighboring router is marked with an asterisk D *, and the usual routes received via EIGRP are marked with the letter D.
9. 13.Make conclusions reached on the following network configurations
Switch#show vtp status
VTP Version : 2
Configuration Revision : 8
Maximum VLANs supported locally : 255
Number of existing VLANs : 11
VTP Operating Mode : Client
VTP Domain Name : cisco
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x6E 0xFD 0xC9 0x25 0x93 0x8C 0x7E 0x29
Configuration last modified by 0.0.0.0 at 3-1-93 00:01:46
VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol that propagates the definition of Virtual Local Area Networks (VLAN) on the whole local area network.
1. The protocol version VTP.
2. Configuration revision number, this parameter is required for the following situations:When VTP server sends information about VLAN, this number is used to indicate the novelty of "freshness" base.
3. Mode in which the switch is running at the moment.
4. VTP Pruning - a technology invented to reduce the load on the main channels (trunks). The main thing is that there is no need to send the information about the switch VLAN if it has no active ports in this VLAN. Also does not send broadcast packets to the switch if it has no active ports in the VLAN the sender Broadcast.
without VTP pruning
5. VTP V2 is not much different than VTP V1. The major difference is that VTP V2 introduces support for Token Ring VLANs. If you use Token Ring VLANs, you must enable VTP V2. Otherwise, there is no reason to use VTP V2. Changing the VTP version from 1 to 2 will not cause a switch to reload.
6. If the traps generation are enabled, the switch will notify the network management station when a new VTP message is sent.
with VTP pruning
