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Re: [Xen-users] unstable network problem


  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Tim Durack <tdurack@xxxxxxxxx>
  • Date: Tue, 9 Aug 2005 14:24:40 -0400
  • Delivery-date: Tue, 09 Aug 2005 18:22:59 +0000
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

txqueuelen didn't work here either.

For what it's worth, here's what the capture looks like for Dom0 -> guest:

tethereal -i eth0
device eth0 entered promiscuous mode
Capturing on eth0
  0.000000  192.168.1.1 -> 192.168.1.2  TCP 59135 > ssh [SYN] Seq=0
Ack=0 Win=5840 Len=0 MSS=1460 TSV=122820 TSER=0 WS=2
  0.002181  192.168.1.2 -> 192.168.1.1  TCP ssh > 59135 [SYN, ACK]
Seq=0 Ack=1 Win=5792 Len=0 MSS=1460 TSV=115220 TSER=122820 WS=1
  0.003497  192.168.1.1 -> 192.168.1.2  TCP 59135 > ssh [ACK] Seq=1
Ack=1 Win=5840 Len=0 TSV=122820 TSER=115220
  0.010001  192.168.1.2 -> 192.168.1.1  SSH Server Protocol:
SSH-2.0-OpenSSH_4.1p1 Debian-6
  0.010472  192.168.1.1 -> 192.168.1.2  TCP 59135 > ssh [ACK] Seq=1
Ack=32 Win=5840 Len=0 TSV=122821 TSER=115221
  0.010478  192.168.1.1 -> 192.168.1.2  SSH Client Protocol:
SSH-2.0-OpenSSH_4.1p1 Debian-6
  0.215968  192.168.1.1 -> 192.168.1.2  SSHv2 [TCP Retransmission]
Client: Unknown (46)[Unreassembled Packet [incorrect TCP checksum]]
  0.635966  192.168.1.1 -> 192.168.1.2  SSHv2 [TCP Retransmission]
Client: Unknown (46)
  1.475967  192.168.1.1 -> 192.168.1.2  SSHv2 [TCP Retransmission]
Client: Unknown (46)
  3.155992  192.168.1.1 -> 192.168.1.2  SSHv2 [TCP Retransmission]
Client: Unknown (46)
  5.466528  192.168.1.2 -> fe:ff:ff:ff:ff:ff ARP Who has 192.168.1.1? 
Tell 192.168.1.2
  5.466572  192.168.1.1 -> 192.168.1.2  ARP 192.168.1.1 is at fe:ff:ff:ff:ff:ff
  6.515988  192.168.1.1 -> 192.168.1.2  SSHv2 [TCP Retransmission]
Encrypted request packet len=31
 13.235996  192.168.1.1 -> 192.168.1.2  SSHv2 [TCP Retransmission]
Encrypted request packet len=31


Interestingly if I build two guests I can ssh between them just fine.

Tim:>

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