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Practical Exercise Solution
Example 11-24 shows the solution to the Practical Exercise, and Example 11-25 shows the output of show queueing priority.
Example 11-24. Solution to Practical Exercise
R1#show running-config
version 12.1
!
hostname R1
ip subnet-zero
!
!
interface Ethernet0/0
ip address 172.16.100.1 255.255.255.0
half-duplex
!
interface Ethernet0/1
ip address 64.236.24.1 255.255.255.0
half-duplex
!
interface Serial0/2
ip address 10.1.2.1 255.255.255.252
priority-group 1
!
router ospf 1
log-adjacency-changes
network 10.1.2.0 0.0.0.3 area 0
network 172.16.100.0 0.0.0.255 area 0
network 64.236.24.0 0.0.0.255 area 0
!
ip classless
!
access-list 1 permit 64.236.24.0 0.0.0.255
priority-list 1 protocol ip high list 1
priority-list 1 protocol ip low tcp ftp-data
!
end
Example 11-25. Output of show queueing priority
R1#show queueing priority
Current DLCI priority queue configuration:
Current priority queue configuration:
List Queue Args
1 high protocol ip list 1
1 low protocol ip tcp port ftp-data
Example 11-26 shows the output of the debug priority command. Note that packets from network 64.236.24.0/24 are placed in the high-priority queue. You can also see that FTP traffic is being placed in the low-priority queue.
Example 11-26. Output of debug priority
R1# 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (s=64.236.24.25, d=172.16.101.26) -> high 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2: ip (tcp 20) -> low 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2: ip (tcp 20) -> low 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2: ip (tcp 20) -> low 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2: ip (tcp 20) -> low 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2: ip (tcp 20) -> low 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2: ip (tcp 20) -> low
Example 11-27 uses extended pings to verify queuing operation.
Example 11-27. Using Extended Pings to Verify Queuing Operation
R1#ping Protocol [ip]: Target IP address: 172.16.101.1 Repeat count [5]: Datagram size [100]: Timeout in seconds [2]: Extended commands [n]: y Source address or interface: Type of service [0]: Set DF bit in IP header? [no]: Validate reply data? [no]: Data pattern [0xABCD]: Loose, Strict, Record, Timestamp, Verbose[none]: Sweep range of sizes [n]: Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.101.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 32/33/36 ms R1# 4d02h: PQ: Serial0/2: ip (s=64.236.24.1, d=172.16.101.1) -> high 4d02h: PQ: Serial0/2 output (Pk size/Q 104/0) 4d02h: PQ: Serial0/2: ip (s=64.236.24.1, d=172.16.101.1) -> high 4d02h: PQ: Serial0/2 output (Pk size/Q 104/0) 4d02h: PQ: Serial0/2: ip (s=64.236.24.1, d=172.16.101.1) -> high 4d02h: PQ: Serial0/2 output (Pk size/Q 104/0) 4d02h: PQ: Serial0/2: ip (s=64.236.24.1, d=172.16.101.1) -> high 4d02h: PQ: Serial0/2 output (Pk size/Q 104/0) 4d02h: PQ: Serial0/2: ip (s=64.236.24.1, d=172.16.101.1) -> high 4d02h: PQ: Serial0/2 output (Pk size/Q 104/0) R1#ping Protocol [ip]: Target IP address: 172.16.101.1 Repeat count [5]: Datagram size [100]: Timeout in seconds [2]: Extended commands [n]: y Source address or interface: 172.16.100.1 Type of service [0]: Set DF bit in IP header? [no]: Validate reply data? [no]: Data pattern [0xABCD]: Loose, Strict, Record, Timestamp, Verbose[none]: Sweep range of sizes [n]: Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.101.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 32/34/36 ms R1# 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2 output (Pk size/Q 104/2) 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2 output (Pk size/Q 104/2) 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2 output (Pk size/Q 104/2) 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2 output (Pk size/Q 104/2) 4d02h: PQ: Serial0/2: ip (defaulting) -> normal 4d02h: PQ: Serial0/2 output (Pk size/Q 104/2) 4d02h: PQ: Serial0/2 output (Pk size/Q 24/0)
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