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Re: direct routing/gateway issues.

To: tc lewis <tcl@xxxxxxxxx>
Subject: Re: direct routing/gateway issues.
Cc: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
From: "Ian S. McLeod" <ian@xxxxxxxxxxx>
Date: Tue, 18 Jul 2000 14:31:00 -0700 (PDT)
I believe this is the key problem.  You don't seem to be getting any
response from the ARP of the GW address.

1) Can you verify that the ARP requests for 64.208.49.1 are actually
reaching the gateway machine?  (BTW-Is this a router or another Linux
box?)

2) The gateway may be ignoring these arp requests because it doesn't know
how get the reply back to 192.168.100.98.  You may have to hard code the
MAC address of the gateway using the arp command.  Try:

# arp -s 64.208.49.1 <mac>

Where <mac> is the gateway MAC address in colon separated hex.

-Ian

> real server:
> 12:17:52.999514 eth1 B arp who-has 64.208.49.1 tell 192.168.100.98
> 12:17:52.999521 eth2 B arp who-has 64.208.49.1 tell 192.168.100.98
> 12:17:53.550585 eth1 > 192.168.100.99 > 64.208.49.132: icmp: host
> 208.219.36.67 unreachable [tos 0xc0]
> 12:17:53.550598 eth1 > 192.168.100.99 > 64.208.49.132: icmp: host
> 208.219.36.67 unreachable [tos 0xc0]
> 
> 
> other real server:
> 12:17:55.251106 eth1 B arp who-has 64.208.49.1 tell 192.168.100.99
> 12:17:55.251114 eth2 B arp who-has 64.208.49.1 tell 192.168.100.99
> 12:17:56.124482 eth1 < 208.219.36.67.62374 > 64.208.49.132.www: S
> 98091686:98091686(0) win 32120 <mss 1460,sackOK,timestamp 161199526
> 0,nop,wscale 0> (DF)
> 12:17:56.199872 eth1 > 192.168.100.98 > 64.208.49.132: icmp: host
> 208.219.36.67 unreachable [tos 0xc0]





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