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Layer 3 Output traffic counter issue in 4500X & 4900M

Hello All

Today I have seen very abnormal behaviour in 4500X & 4900M. I have created SVI and advertised in OSPF. Everything is working fine but when I see the traffic counter , I am surprised to see that on INPUT there is a traffic but on OUTPUT there is no traffic on Primary L3 Device.INPUT Traffic I see on my primary switch & Output traffic I see it on secondary switch. For other vlans its working fine.

Please find the below output and suggest with recommendation.

SWITCH-Primary#sh int vlan 977
Vlan977 is up, line protocol is up
Hardware is Ethernet SVI, address is c067.af87.0d1f (bia c067.af87.0d1f)
Description:

Internet address is X.X.X.X/29
MTU 1500 bytes, BW 128 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 105/255
Encapsulation ARPA, loopback not set
Keepalive not supported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 53000 bits/sec, 56 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
L3 in Switched: ucast: 1377161 pkt, 172430132 bytes - mcast: 0 pkt, 0 bytes
L3 out Switched: ucast: 173529 pkt, 43272564 bytes - mcast: 0 pkt, 0 bytes
IPv6 L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes
IPv6 L3 out Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes
1377161 packets input, 172430132 bytes, 0 no buffer
Received 40829 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
211532 packets output, 45117721 bytes, 0 underruns
0 output errors, 2 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out


SWITCH-Secondary#sh int vlan 977
Vlan977 is up, line protocol is up
Hardware is Ethernet SVI, address is f0f7.55c4.887f (bia f0f7.55c4.887f)
Description:
Internet address is X.X.X.X/29
MTU 1500 bytes, BW 128 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 193/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not supported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output never, output hang never
Last clearing of "show interface" counters 03:56:52
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 97000 bits/sec, 47 packets/sec
L3 in Switched: ucast: 102 pkt, 4980 bytes - mcast: 0 pkt, 0 bytes
L3 out Switched: ucast: 564933 pkt, 139790509 bytes - mcast: 0 pkt, 0 bytes
IPv6 L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes
IPv6 L3 out Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes
102 packets input, 4980 bytes, 0 no buffer
Received 5141 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
570680 packets output, 140065481 bytes, 0 underruns
0 output errors, 1 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out

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