两交换机间为什么会有多个不平衡的trunking group

liuchuanwenno1

我在交换机上运行trunkshow,输出如下:\r\n>trunkshow\r\n  1: 22->  5 10:00:00:05:1e:04:c8:2c  22 deskew 15 MASTER\r\n\r\n  2: 23-> 12 10:00:00:05:1e:04:c8:2c  22 deskew 18 MASTER\r\n     21-> 15 10:00:00:05:1e:04:c8:2c  22 deskew 15 \r\n     20-> 13 10:00:00:05:1e:04:c8:2c  22 deskew 16 \r\n\r\n  3: 28-> 14 10:00:00:05:1e:04:c8:2c  22 deskew 15 MASTER\r\n\r\n  4: 31->  6 10:00:00:05:1e:04:c8:2c  22 deskew 15 MASTER\r\n     30->  7 10:00:00:05:1e:04:c8:2c  22 deskew 18 \r\n     29->  4 10:00:00:05:1e:04:c8:2c  22 deskew 17 \r\n\r\n我的fabric中只有两台交换机,一台是我执行命令的switch,domain ID: 32,另一台domain ID: 22, 通过8 PORT ISL相连,为什么switch会配置4个这样的trunking group.如果每个每个trunking group中的ISL能load balance,那4个trunking group之间有什么样的关系呢?