>А на транке между G и H ошибки есть? вот статистика интерфейса - вроде нет
Cat@XX#show interface GigabitEthernet0/25
GigabitEthernet0/25 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is XXXX.XXXX.XXXX (bia XXXX.XXXX.XXXX)
Description: optic to NH1
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 12/255, rxload 57/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseLX SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:22, output 00:00:23, 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 224746000 bits/sec, 30231 packets/sec
5 minute output rate 48028000 bits/sec, 23207 packets/sec
699983888 packets input, 669269158879 bytes, 0 no buffer
Received 3133053 broadcasts (3012083 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 3012083 multicast, 0 pause input
0 input packets with dribble condition detected
501809695 packets output, 124892610641 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
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