The first is whether to use Unicast/Multicast or IGMP modes for the NLB Traffic. It is important to remember that Exchange does not care if you use Unicast or Multicast or IGMP mode and is entirely dependent on your switching environment. Wolfenstein 2 crack download torent movie. So at the first we are confused as to which to choose due to the myriad of documentation suggesting either protocol, it’s really depending on your network environment, So we just decided to give multicast to go. After a few minutes our core switch (an 8212zl) started dropping packets for our services VLAN. We shut off the NLB and everything had returned to normal. After a bit of digging we found that ProCurve switches are not compatible with multicast mode NLB due to their inability to have static ARP tables (they can only cache). But this can be remedied somewhat by issuing the following command on some models of switches: ProCurve(config)# ip arp-mcast-replies The command is supported on HP ProCurve E8200zl series, E5400zl series, E3500yl series, E6600 series, E6200yl series and E2900 series switches support Microsoft Windows NLB in Multicast mode or IGMP mode. Nlb Multicast ModeMicrosoft service pack 2 peewee. I just configured our first cluster of Microsoft servers using Multicast NLB. The gateway of the VLAN is a Cisco 5540 and the servers are connected on a Cisco 3750 stack. In order to let the ASA forward the frames for this multicast group I had to set the static arp resolution to the Multicast MAC address of this cluster. Because the Windows NLB used multicast operation mode, it was instantly clear that the switches were the problem. The explanation is easy: By default, a Comware based switch does not learn multicast MAC addresses. And because of this, the switch does not add them to the ARP table. And you can’t add static multicast MAC address entries. Vmware Nlb MulticastMs Nlb MulticastSimply ensure that these switches are running K. Python setup py install distutils python. Or greater firmware.
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