sio(4) driver

Maxim Mazurok maxim at km.ua
Wed Sep 3 12:41:40 PDT 2003


On Wed, Sep 03, 2003 at 07:00:01PM +0200, Thomas Moestl wrote:

>> >That's very strange. So you cannot see them in tcpdump if you do not
>> >put the interface in promiscuous mode (by using the -p argument to
>> >tcpdump)? Can you receive broadcast packets (e.g. a broadcast ping) at
>> >all?
>> 
>> so... experiment:
>> [...]
>
>Hmmm. Can you please repeat the experiment and send a tcpdump, this
>time in promiscuous mode (i.e. without the -p option), if possible
>from both the e250 and the cisco?

i not have e250 :(
i have Ultra AXi OEM motherboard.....
tcpdump on cisco - it's problem. i can run packet debugger....

so, experiment two: 

root at fang:~#ifconfig rl3
rl3: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        options=8<VLAN_MTU>
        inet 193.201.116.249 netmask 0xfffffffc broadcast 193.201.116.251
        ether 00:30:4f:21:bc:91
        media: Ethernet 10baseT/UTP
        status: active
root at fang:~#tcpdump -n -i rl3
tcpdump: listening on rl3
22:38:48.369179 213.222.184.24.2402 > 193.201.116.250.21: S242439867:242439867(0) win 64240 <mss 1460,nop,nop,sackOK> (DF)
22:39:06.663012 193.201.116.250 > 255.255.255.255: icmp: echo request
22:39:08.662365 193.201.116.250 > 255.255.255.255: icmp: echo request
22:39:10.662299 193.201.116.250 > 255.255.255.255: icmp: echo request
22:39:12.662291 193.201.116.250 > 255.255.255.255: icmp: echo request
22:39:14.662268 193.201.116.250 > 255.255.255.255: icmp: echo request
22:39:21.304047 CDP v2, ttl=180s DevID 'ap-ec' Addr (1): IPv4 193.201.116.250 PortID 'Ethernet0' CAP 0x01[|cdp]
22:39:37.061411 193.201.116.250 > 193.201.116.249: icmp: echo request
22:39:37.061532 193.201.116.249 > 193.201.116.250: icmp: echo reply
22:39:37.066188 193.201.116.250 > 193.201.116.249: icmp: echo request
22:39:37.066320 193.201.116.249 > 193.201.116.250: icmp: echo reply
22:39:37.071014 193.201.116.250 > 193.201.116.249: icmp: echo request
22:39:37.071111 193.201.116.249 > 193.201.116.250: icmp: echo reply
22:39:37.075681 193.201.116.250 > 193.201.116.249: icmp: echo request
22:39:37.075788 193.201.116.249 > 193.201.116.250: icmp: echo reply
22:39:37.080291 193.201.116.250 > 193.201.116.249: icmp: echo request
22:39:37.080385 193.201.116.249 > 193.201.116.250: icmp: echo reply
22:39:49.930933 193.201.116.250 > 255.255.255.255: icmp: echo request
22:39:51.930193 193.201.116.250 > 255.255.255.255: icmp: echo request
22:39:53.930211 193.201.116.250 > 255.255.255.255: icmp: echo request
22:39:55.930091 193.201.116.250 > 255.255.255.255: icmp: echo request
22:39:57.930105 193.201.116.250 > 255.255.255.255: icmp: echo request
^C
22 packets received by filter
0 packets dropped by kernel

from cisco:

ap-ec#ping 193.201.116.251

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 193.201.116.251, timeout is 2 seconds:
.....
ap-ec#ping 193.201.116.249

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 193.201.116.249, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms
ap-ec#ping 193.201.116.248

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 193.201.116.248, timeout is 2 seconds:
.....
ap-ec#sh ru in e 0
Building configuration...

Current configuration : 105 bytes
!
interface Ethernet0
 ip address 193.201.116.250 255.255.255.252
 no ip mroute-cache
 no keepalive
end

-- 
Maxim Mazurok  (MMP2-RIPE)


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