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 From : Andrew Atangulov                     2:5005/28.666  25 Mar 2002  18:35:48
 To : All
 Subject : c3640, 3com, dot1q
 -------------------------------------------------------------------------------- 
 
 
 
 Вот куски конфига:
 
 ip cef
 interface Tunnel1                        
  description Tunnel to 3rd provider
  ip address 3.3.3.3 255.255.255.0
  ip mtu 1450                             
  ip nat outside                          
  ip route-cache policy                   
  ip route-cache flow                     
  tunnel source FastEthernet2/0.8         
  tunnel destination 4.4.4.4        
  tunnel mode ipip                        
  tunnel path-mtu-discovery               
 !
 interface FastEthernet2/0       
  no ip address                  
  ip accounting mac-address input
  ip route-cache policy          
  ip route-cache flow            
  no ip mroute-cache             
  duplex auto                    
  speed auto                     
  no cdp enable                  
 !
 interface FastEthernet2/0.1          
  description Localnet        
  encapsulation dot1Q 1 native        
  ip address 172.16.1.1 255.255.255.0
  ip nat inside                       
  ip policy route-map ISP             
 ... три локальных dot1q VLAN's
 !
 interface FastEthernet2/0.8             
  description First provider    
  encapsulation dot1Q 8                  
  ip address 1.1.1.1 255.255.255.0
  no ip proxy-arp                        
  ip nat outside
 !
 interface FastEthernet2/0.9                
  description Second provider
  encapsulation dot1Q 9                     
  ip address 2.2.2.2 255.255.255.220
  no ip proxy-arp
  ip nat outside
 !
 ip nat inside source route-map first interface FastEthernet2/0.8 overload 
 ip nat inside source route-map second interface FastEthernet2/0.9 overload
 ip nat inside source route-map third interface Tunnel1 overload
 !
 route-map first permit 10        
  match ip address local           
  match interface FastEthernet2/0.9
 !
 route-map second permit 10         
  match ip address local           
  match interface FastEthernet2/0.8
 !                                 
 route-map three permit 10       
  match ip address local           
  match interface Tunnel1          
 !
 route-map ISP permit 10                                             
  match ip address someacl
  set ip default next-hop 3.3.3.3 2.2.2.2 1.1.1.1
 !
 route-map ISP permit 20
  match ip address anotheracl    
  set ip default next-hop 2.2.2.2 3.3.3.3 1.1.1.1
 !
 route-map ISP permit 30
  match ip address onemoreacl
  set ip default next-hop 1.1.1.1
 !
 ------
 Все это хозяйство воткнуто в 3Com Superstack II 3300.
 (Fastethernet один, звиняйте, ничего более лучшего не придумал, раньше вместо
 cisco был linux, который справлялся с "вышерешенной" задачей)
 c3640#show int fa 2/0                                              
 FastEthernet2/0 is up, line protocol is up                         
   MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,                    
      reliability 255/255, txload 3/255, rxload 3/255               
   Queueing strategy: fifo                                 
   Output queue 0/40, 0 drops; input queue 2/75, >107 drops<
   5 minute input rate 1417000 bits/sec, 228 packets/sec 
   5 minute output rate 1397000 bits/sec, 216 packets/sec
   26254309 packets input, 2480728547 bytes                     
   Received 1054688 broadcasts, 0 runts, 0 giants, 0 throttles  
   81 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored        
   0 watchdog                                                   
   0 input packets with dribble condition detected              
   25207256 packets output, 2179042530 bytes, 0 underruns(0/0/0)
   0 output errors, 0 collisions, 0 interface resets            
   0 babbles, 0 late collision, >622553 deferred<                   
   0 lost carrier, 0 no carrier                                 
   0 output buffer failures, 0 output buffers swapped out
 
 Теряются пакетики.
 Пингаем с линуха(находится в первом вилане):
 # ping -q -f 172.16.1.1 
 PING 172.16.1.1 (172.16.1.1) from 172.16.1.24 : 56(84) bytes of data.
                                                                        
 --- 172.16.1.1 ping statistics ---                                    
 2905 packets transmitted, 2634 packets received, 9% packet loss        
 round-trip min/avg/max = 1.2/68.8/126.1 ms                             
 
 # ping -q -c 100 172.16.1.1
 PING 172.16.1.19 (172.16.1.1) from 172.16.1.24 : 56(84) bytes of data.
                                                                        
 --- 172.16.1.1 ping statistics ---                                    
 104 packets transmitted, 100 packets received, 3% packet loss          
 round-trip min/avg/max = 1.1/1.4/8.4 ms                                
 Где копать, кто виноват (с)  - cisco, 3com, мои кривые руки?
 Какие show еще показать?
 Заранее спасибо за помощь.
 
 P.S. патч-корды менял, не помогает.
 P.P.S. IOS (C3640-JK9O3S-M), Version 12.2(3)
        3com Operational Version: 2.62
 
 WBW, Andrew
 
 --- QDed alpha v3.57pl9.1e/FreeBSD
  * Origin: In PIVO veritas. (2:5005/28.666)
 
 

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 Тема:    Автор:    Дата:  
 c3640, 3com, dot1q   Andrew Atangulov   25 Mar 2002 18:35:48 
 Re: c3640, 3com, dot1q   john gladkih   25 Mar 2002 20:35:52 
 c3640, 3com, dot1q   Andrew Atangulov   26 Mar 2002 10:46:06 
 c3640, 3com, dot1q   Vladimir Chepikov   26 Mar 2002 10:01:12 
 c3640, 3com, dot1q   Andrew Atangulov   27 Mar 2002 19:26:25 
 Re: c3640, 3com, dot1q   john gladkih   29 Mar 2002 15:26:54 
 c3640, 3com, dot1q   Andrew Atangulov   30 Mar 2002 08:35:38 
 c3640, 3com, dot1q   Oleg Stasiuk   01 Apr 2002 22:47:38 
 Re: c3640, 3com, dot1q   Andrew Anikin   27 Mar 2002 00:31:10 
 Re: c3640, 3com, dot1q   john gladkih   27 Mar 2002 13:57:11 
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