Cisco Certification: An Introduction To Multilayer Switching And SVIs

Of course, you need to know everything about SVIs and multilayer switching to earn your CCNP, but you also need to know about them, because they are so common in today& 39;s network!
Why? We can use that SVI between VLAN reported multilayer switch, eliminating the need for a separate router to get involved.
In this example we Host 1 in VLAN 11 and Host 3 in VLAN 33. Before we begin setting, we& 39;ll communicates between the two computers. (We will use Cisco routers for the hosts in the laboratory, so output may seem familiar ping!)
HOST 1 ping 30.1.1.1
Type escape sequence abort.
Sending 5, 100 bytes ICMP Echos at 30.1.1.1, timeout in 2 seconds: .....
Success rate of 0 percent (0 / 5)
HOST 3 ping 20.1.1.1
Type escape sequence abort.
Sending 5, 100 bytes ICMP Echos at 20.1.1.1, the waiting time of 2 seconds:
.....
Success rate of 0 percent (0 / 5)
As we expect no connection between IP hosts. Assuming the relevant switch ports in VLAN 11 and VLAN 33, we now have moved to create two virtual interfaces on this multilayered switch. One will represent VLAN 33, and another will represent VLAN 11.
SW1 (configuration) int vlan11
01: 30:04:% LINK-3-UPDOWN: Interface Vlan11, changed state up
01: 30:05:% LINEPROTO-5 - UPDOWN: Line protocol on Vlan11 interface, changed the status of the up
SW1 (configuration-if) ip address 20.1.1.11 255.255.255.0
SW1 (configuration-if) int vlan33
01: 30:11:% LINK-3-UPDOWN: Interface Vlan33, changed the status of the up
01 : 30:12:% LINEPROTO-5-UPDOWN: Line protocol on Vlan33 interface, changed the status of the up
SW1 (configuration-if) ip address 30.1.1.11 255.255.255.0
At this moment, we still got a problem, if we look at the routing table .
SW1 show ip route
Default gateway not set
Host Gateway last Using Total Uses Interface
ICMP redirect cache empty
The problem is that we do not have a routing table, as well as IP routing disabled by default on multilayer switch. Let us turn, IP routing and then check routing table.
SW1 (configuration) ip routing
SW1 (configuration) Z
SW1 show ip route
Gateway last resort is not set
20.0.0.0/24 subnetted, 1 subnets
C 20,1. 1.0 directly linked to each other, Vlan11
30.0.0.0/24 is subnetted, 1 subnets
C 30.1.1.0 is directly linked to each other, Vlan33
Now we are in good shape! Hosts need to have their default gateway installed in the relevant SVI IP address here, Host 1 should have a lock installed in 20.1.1.11 and Host 3 to 30.1.1.11. Since then, communication between VLAN is currently in place, as evidenced by the results below.
HOST 1 ping ping 30.1.1.1
Type the escape sequence abort.
Sending 5, 100 bytes ICMP Echos at 30.1.1.1, the waiting time for 2 seconds:

Success rate is 100 per cent (5 / 5), both min / avg / max = 1/1/4 ms
HOST 3 ping 20.1.1.1
Type escape sequence abort.
Sending 5, 100 bytes ICMP Echos on 20.1.1.1, waiting time of 2 seconds:

Success bid is 100 percent (5 / 5), both min / avg / max = 1/2/4 ms
In certification Cisco future textbook, we look at the settings of multilayer switching port as routed port, and assign IP-address of the port. See you then!
Chris Bryant, CCIE 12933, is the owner of the Bryant Advantage, home of free Cisco CCNP Certification and CCNA certification exam books, The Ultimate CCNA Study package, and ultimately CCNP Packages.
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