Делаю Etherchannel между маршрутизатором 2811 и коммутатором 3750.
На 2811 - 3 уровень (2 не могу сделать). На коммутаторе 2 уровень (3 не могу сделать).

Etherchannel поднимается, но пинги не идут.

На коммутаторе 3750
interface Port-channel1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 75,76
switchport mode trunk

interface FastEthernet1/0/21
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 75,76
switchport mode trunk
speed 100
duplex full
channel-group 1 mode on

interface FastEthernet1/0/35
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 75,76
switchport mode trunk
speed 100
duplex full
channel-group 1 mode on

interface Vlan75
ip address 10.110.133.1 255.255.255.248
!

Channel-group listing:

----------------------

Group: 1

----------

Port-channels in the group:

---------------------------

Port-channel: Po1

------------

Age of the Port-channel = 76d:19h:48m:55s

Logical slot/port = 10/1 Number of ports = 2

GC = 0x00000000 HotStandBy port = null

Port state = Port-channel Ag-Inuse

Protocol = -

Port security = Disabled

Ports in the Port-channel:

Index Load Port EC state No of bits

------+------+------+------------------+-----------

0 00 Fa1/0/21 On 0

0 00 Fa1/0/35 On 0

Time since last port bundled: 0d:00h:15m:51s Fa1/0/35

Time since last port Un-bundled: 0d:21h:56m:41s Fa1/0/21

SR2#ping 10.110.133.1 'себя
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.110.133.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
SR2#ping 10.110.133.4 'не идет пинг на маршрутизатор
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.110.133.4, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

--------маршрутизатор 2811

interface Port-channel1
no ip address
!
interface Port-channel1.75
encapsulation dot1Q 75
ip address 10.110.133.4 255.255.255.248
!
interface Port-channel1.76
encapsulation dot1Q 76
ip address 10.110.133.11 255.255.255.248

!

interface FastEthernet0/0
no ip address
duplex full
speed 100
channel-group 1
!
interface FastEthernet0/1
no ip address
duplex full
speed 100
channel-group 1

Router#sh int port-channel 1
Port-channel1 is up, line protocol is up
Hardware is FEChannel, address is 0018.ba4d.6c61 (bia 0018.ba4d.6c60)
MTU 1500 bytes, BW 200000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
No. of active members in this channel: 2
Member 0 : FastEthernet0/1 , Full-duplex, 100Mb/s
Member 1 : FastEthernet0/0 , Full-duplex, 100Mb/s
No. of Non-active members in this channel: 0
Last input 00:20:15, 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: 0/80 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
57 input errors, 0 CRC, 57 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
201 packets output, 14852 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Router#

Router#ping 10.110.133.4 'себя
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.110.133.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Router#ping 10.110.133.1 ' на коммутатор пинг не идет

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.110.133.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

Вопрос: Что не так в конфигурациях? Почему пинг не идет?