Information Technology Reference
In-Depth Information
Modify the bandwidth of the serial interfaces.
Step 2.
On most serial links, the bandwidth metric will default to 1544 Kbits. If this is not the
actual bandwidth of the serial link, the bandwidth will need to be changed so that the
EIGRP metric can be calculated correctly.
For this lab, the link between R1 and R2 will be configured with a bandwidth of 64 kbps,
and the link between R2 and R3 will be configured with a bandwidth of 1024 kbps. Use
the
bandwidth
command to modify the bandwidth of the serial interfaces of each router:
R1(config)#
interface serial0/0/0
R1(config-if)#
bandwidth 64
R2(config)#
interface serial0/0/0
R2(config-if)#
bandwidth 64
R2(config)#
interface serial0/0/1
R2(config-if)#
bandwidth 1024
R3(config)#
interface serial0/0/1
R3(config-if)#
bandwidth 1024
Note:
The
bandwidth
command modifies only the bandwidth metric used by routing protocols, not the physical
bandwidth of the link.
Verify the bandwidth modifications.
Step 3.
Use the
show ip interface
command to verify that the bandwidth value of each link has
been changed.
R1#
show interface serial0/0/0
Serial0/0/0 is up, line protocol is up (connected)
Hardware is HD64570
Internet address is 172.16.3.1/30
MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set, keepalive set (10 sec)
<output omitted>
R2#
show interface serial0/0/0
Serial0/0/0 is up, line protocol is up (connected)
Hardware is HD64570
Internet address is 172.16.3.2/30
MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set, keepalive set (10 sec)
<output omitted>
R3#
show interface serial0/0/1
Serial0/0/1 is up, line protocol is up (connected)
Hardware is HD64570
Internet address is 192.168.10.9/30
MTU 1500 bytes, BW 1024 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set, keepalive set (10 sec)
<output omitted>
