Hi,
I need a help ! its urgent,
I have OSPF Network that include 10 Cisco Routers 7200, suddenly The OSPF adjacency between the routers flapped and it gives Log: Too Many Re transmission OSPF Packets.
After Deep Investigation I found that There is on all interfaces of all Routers has Ignored Packets which is equal to Input errors,
for Example :
Router#sho inter gigabitEthernet 0/2
GigabitEthernet0/2 is up, line protocol is up
Hardware is MV64460 Internal MAC, address is 0006.52f1.2c1a (bia 0006.52f1.2c1a)
Description:
MTU 9000 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 184/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set
Keepalive set (10 sec)
Full Duplex, 1Gbps, media type is RJ45
output flow-control is XON, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:01, output hang never
Last clearing of "show interface" counters 00:40:09
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 723797000 bits/sec, 70051 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
163377306 packets input, 397567366 bytes, 0 no buffer
Received 1421 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
78721 input errors, 0 CRC, 0 frame, 0 overrun, 78721 ignored
0 watchdog, 3830 multicast, 0 pause input
1390 packets output, 119084 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
80 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
I've checked the MTU size on whole paths, there are all compitable and equal to each other, even on L2 Devices, So I don't think the problem from MTU Value.
Regards
