Есть 3 маршрутизатора циско 2500 соедененные в треугольник

            Server
         (192.168.1.1)
                  |
                  |
             cisco1
         (192.168.1.2)
                     /\
                   /    \
                 /        \
               /            \
             /                \
           /                    \
         /                        \
       /                            \              
---cisco2-------------cisco3--------------Client
(192.168.1.3)      (192.168.1.5)       (192.168.1.4)

Исходный конф CISCO1 представляет из себя следующее.

CISCO1#show conf
Using 663 out of 32762 bytes
!
version 11.2
no service udp-small-servers
no service tcp-small-servers
!
hostname CISCO1
!
enable secret 5
enable password
!
no ip routing
ip host CISCO1 192.168.1.2
ip host CISCO3 192.168.1.5
ip host CISCO2 192.168.1.3
!
interface Ethernet0
ip address 192.168.1.2 255.255.255.0
no ip route-cache
bridge-group 1
!
interface Serial0
ip address 192.168.1.2 255.255.255.0
no ip route-cache
bridge-group 1
!
interface Serial1
ip address 192.168.1.2 255.255.255.0
no ip route-cache
bridge-group 1
!
no ip classless
bridge 1 protocol ieee
!
line con 0
line aux 0
line vty 0 4
password
login
!
end

CISCO1#show int e0
Ethernet0 is up, line protocol is down
  Hardware is Lance, address is 00e0.1e3e.6a7a (bia 00e0.1e3e.6a7a)
  Internet address is 192.168.1.2/24
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 128/255, load 1/255
  Encapsulation ARPA, loopback not set, keepalive set (10 sec)
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:19:41, output 00:00:02, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     13363292 packets input, 1488148444 bytes, 0 no buffer
     Received 1323413 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 input packets with dribble condition detected
     1356788 packets output, 1079288387 bytes, 0 underruns
     205 output errors, 71 collisions, 1 interface resets
     0 babbles, 0 late collision, 507 deferred
     205 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

CISCO1#show int s0
Serial0 is down, line protocol is down
  Hardware is HD64570
  Internet address is 192.168.1.2/24
  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
  Encapsulation HDLC, loopback set, keepalive set (10 sec)
  Last input 3d00h, output 00:34:44, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0 (size/max/drops); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/64/0 (size/threshold/drops)
     Conversations  0/3 (active/max active)
     Reserved Conversations 0/0 (allocated/max allocated)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     1938 packets input, 51719 bytes, 0 no buffer
     Received 1932 broadcasts, 0 runts, 0 giants, 0 throttles
     2919462 input errors, 2893922 CRC, 148444 frame, 8 overrun, 1608 ignored, 1483700 abort
     82956 packets output, 2812191 bytes, 0 underruns
     0 output errors, 0 collisions, 42051 interface resets
     0 output buffer failures, 0 output buffers swapped out
     216 carrier transitions
     DCD=down  DSR=down  DTR=down  RTS=down  CTS=down

CISCO1#show int s1
Serial1 is down, line protocol is down
  Hardware is HD64570
  Internet address is 192.168.1.2/24
  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
  Encapsulation HDLC, loopback not set, keepalive set (10 sec)
  Last input 00:19:32, output 00:19:32, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0 (size/max/drops); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/64/0 (size/threshold/drops)
     Conversations  0/2 (active/max active)
     Reserved Conversations 0/0 (allocated/max allocated)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     877450 packets input, 1050097016 bytes, 0 no buffer
     Received 876698 broadcasts, 0 runts, 0 giants, 0 throttles
     3784909 input errors, 293334 CRC, 3169 frame, 204945 overrun, 205425 ignored, 237084 abort
     2044754 packets output, 128669536 bytes, 0 underruns
     0 output errors, 0 collisions, 2084 in

Незнаю кто так настроил (делалось задолго до меня), но факт, cisco1 вышел из строя, был заменен, но у меня не получается настроить новый роутер так-же, в худшем случае связи нет вобще в лучшем теряется 66% пакетов (видимо циска распределяет нагрузку равномерно по всем портам посылая на нужный интерфейс только каждый 3 пакет).

Подскажите как правильно сконфигурировать CISCO1 чтобы данные нормально бегали между клиентом и сервером. (возможно изменять конфигурацию CISCO2 и CISCO3 но настройки клиента и сервера изменить возможности нет).