Priority Group using Access List + debug

Priority Group using Access List

Configure ACL
R1(config)#access-list 1 permit 2.2.2.2

Configure Priority List
R1(config)#priority-list 1 protocol ip high list 1
R1(config)#priority-list 1 protocol ip medium tcp 23
R1(config)#priority-list 1 protocol ip low tcp 20
R1(config)#priority-list 1 protocol ip low tcp 23
R1(config)#priority-list 1 default normal

Apply
R1(config)#int s0/0
R1(config-if)#priority-gro 1

Verify
R1#sh int s0/0
Serial0/0 is up, line protocol is up
Hardware is PowerQUICC Serial
Internet address is 11.0.0.1/8
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation FRAME-RELAY, loopback not set
Keepalive set (10 sec)
LMI enq sent 256, LMI stat recvd 257, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 1023 LMI type is CISCO frame relay DTE
Broadcast queue 0/64, broadcasts sent/dropped 471/0, interface broadcasts 95
Last input 00:00:05, output 00:00:05, output hang never
Last clearing of “show interface” counters 00:42:47
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: priority-list 1

Debugging priority
R1(config-if)# do debug prior
R1(config)#
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:
Packet sent with a source address of 2.2.2.2
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 60/61/65 ms
R1#
*Mar 1 00:52:22.819: PQ: Serial0/0 output (Pk size/Q 13/0)
*Mar 1 00:52:23.640: PQ: Serial0/0: ip (s=2.2.2.2, d=4.4.4.4) -> high
*Mar 1 00:52:23.640: PQ: Serial0/0 output (Pk size/Q 104/0)
*Mar 1 00:52:23.700: PQ: Serial0/0: ip (s=2.2.2.2, d=4.4.4.4) -> high
*Mar 1 00:52:23.700: PQ: Serial0/0 output (Pk size/Q 104/0)
*Mar 1 00:52:23.760: PQ: Serial0/0: ip (s=2.2.2.2, d=4.4.4.4) -> high
*Mar 1 00:52:23.760: PQ: Serial0/0 output (Pk size/Q 104/0)
R1#
*Mar 1 00:52:23.820: PQ: Serial0/0: ip (s=2.2.2.2, d=4.4.4.4) -> high
*Mar 1 00:52:23.820: PQ: Serial0/0 output (Pk size/Q 104/0)
*Mar 1 00:52:23.884: PQ: Serial0/0: ip (s=2.2.2.2, d=4.4.4.4) -> high
*Mar 1 00:52:23.884: PQ: Serial0/0 output (Pk size/Q 104/0)
R1#
*Mar 1 00:52:29.766: PQ: Serial0/0: ip (s=2.2.2.2, d=11.0

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