公开(公告)号：US06657974B1

公开(公告)日：2003-12-02

申请号：US09549946

申请日：2000-04-14

申请人： Edward Glen Britton ,  Michael G. Fitzpatrick ,  Jeffrey Douglas Haggar ,  Maurice Isrel, Jr. ,  Thomas Donald Moore ,  Andrew Henry Richter ,  Barton Clark Vashaw

发明人： Edward Glen Britton ,  Michael G. Fitzpatrick ,  Jeffrey Douglas Haggar ,  Maurice Isrel, Jr. ,  Thomas Donald Moore ,  Andrew Henry Richter ,  Barton Clark Vashaw

IPC分类号： H04L1228

CPC分类号： H04L29/12018 ,  H04L29/12009 ,  H04L61/10 ,  H04L69/40

摘要： The invention ensures that a single and consistent reply is made to ARP requests in a system of connected IP networks in which each host can contain combinations of host adapters, offload adapters and virtual IP addresses.

摘要翻译： 本发明确保在连接的IP网络的系统中对ARP请求进行单一且一致的答复，其中每个主机可以包含主机适配器，卸载适配器和虚拟IP地址的组合。

公开(公告)号：US06675206B1

公开(公告)日：2004-01-06

申请号：US09549291

申请日：2000-04-14

申请人： Edward Glen Britton ,  Michael G. Fitzpatrick ,  Jeffrey Douglas Haggar ,  Maurice Isrel, Jr. ,  Andrew Henry Richter ,  Barton Clark Vashaw

发明人： Edward Glen Britton ,  Michael G. Fitzpatrick ,  Jeffrey Douglas Haggar ,  Maurice Isrel, Jr. ,  Andrew Henry Richter ,  Barton Clark Vashaw

IPC分类号： G06F15177

CPC分类号： H04L29/12018 ,  H04L29/12009 ,  H04L61/10

摘要： The invention ensures that a single and consistent reply is made to an ARP request in a system of connected IP networks. When an adapter becomes active, the relative network on which it resides is determined by transmitting control packets over it and all other adapters known to the host and observing if and where responses are returned to the adapters. One adapter on a network is designated as active. If the same network contains other adapters, they are marked as standby adapters for the purpose of responding to ARP messages. Special processing is provided for offload adapters that perform there own ARP processing.

摘要翻译： 本发明确保在连接的IP网络的系统中对ARP请求进行单一一致的回复。 当适配器变为活动状态时，通过在其上传输控制数据包以及主机已知的所有其他适配器并观察响应是否返回到适配器，确定其驻留的相对网络。 网络上的一个适配器被指定为活动的。 如果同一个网络包含其他适配器，则它们被标记为备用适配器，以响应ARP消息。 为执行自己的ARP处理的卸载适配器提供特殊处理。

公开(公告)号：US06775278B1

公开(公告)日：2004-08-10

申请号：US09549947

申请日：2000-04-14

申请人： Edward Glen Britton ,  Jeffrey Douglas Haggar ,  Thomas Donald Moore ,  Andrew Henry Richter ,  Barton Clark Vashaw

发明人： Edward Glen Britton ,  Jeffrey Douglas Haggar ,  Thomas Donald Moore ,  Andrew Henry Richter ,  Barton Clark Vashaw

IPC分类号： H04L1228

CPC分类号： H04L29/12018 ,  H04L29/12009 ,  H04L61/10 ,  H04L69/40

摘要： The invention ensures that a single and consistent reply is made to ARP request in a system of connected IP networks. When an adapter (A) becomes active, the owning host sends an ARP advertisement into the network over the adapter. If the advertisement is also received at the sending host over a different adapter B, then the host knows that adapter B is on in the same physical network as adapter A and B can be designated as a backup adapter for A and A can be designated as backup adapter for B. If adapter A fails or becomes inactive, the host resets the backup adapter field for any adapter it owns for which A is marked as the backup adapter. If a backup adapter B has been designated for A, the host also sends an ARP advertisement associating MAC-B with IP-A. This allows network connections originally served via adapter A to continue non-disruptively over adapter B and it also provides access to the host for subsequent new connections. When adapter A becomes active again, the host sends a gratuitous ARP advertisement that maps IP-A to MAC-A. This allows adapter A to re-assume responsibility for responding to ARP requests for IP-A.

摘要翻译： 本发明确保在连接的IP网络的系统中对ARP请求进行单一一致的回复。 当适配器（A）变为活动状态时，拥有主机通过适配器向网络发送ARP广告。 如果通过不同的适配器B在发送主机处接收到广告，则主机知道适配器B在与适配器A相同的物理网络中处于开启状态，并且B可以被指定为用于A的备用适配器，并且A可以被指定为 备用适配器B.如果适配器A出现故障或变为不活动状态，则主机会为其所有A适配器的适配器重新设置备份适配器字段。 如果A指定备用适配器B，主机还会发送一个关联MAC-B与IP-A的ARP通告。 这允许最初通过适配器A服务的网络连接在适配器B上不间断地继续，并且还提供对主机的访问以用于后续的新连接。 当适配器A再次变为活动状态时，主机发送一个将IP-A映射到MAC-A的免费ARP广播。 这允许适配器A重新承担响应IP-A的ARP请求的责任。