randy927
2004-12-17, 07:50 AM
MAC 全部為0,也能正常使用
但在routing table中,有可能會出錯,影響到網路整體效能
因為全世界的網卡,理論上MAC都是唯一的
區網內若有好幾張網卡MAC一樣
這會使router無法判斷,有可能造成亂送,形成網路碰撞
MAC跟routing table應該是沒有關係的.
以下是屬於第三層設備的routing table並沒有看到它有使用MAC address ,routing table所使用的都是IP才對.
172.17.0.0/24 is subnetted, 6 subnets
S 172.17.148.0 is directly connected, Serial1/0
D 172.17.128.0 [90/1764352] via 10.17.128.14, 1d20h, Serial1/3
[90/1764352] via 10.17.128.6, 1d20h, Serial1/1
S 172.22.0.0/16 [1/0] via 10.17.160.2
W2K內的routing table(也沒使用到MAC)
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 172.19.11.254 172.19.11.33 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
172.19.11.0 255.255.255.0 172.19.11.33 172.19.11.33 1
172.19.11.33 255.255.255.255 127.0.0.1 127.0.0.1 1
172.19.255.255 255.255.255.255 172.19.11.33 172.19.11.33 1
224.0.0.0 224.0.0.0 172.19.11.33 172.19.11.33 1
255.255.255.255 255.255.255.255 172.19.11.33 172.19.11.33 1
Default Gateway: 172.19.11.254
===========================================================================
你所說的應是MAC-ADDRESS-TABLE才對.
以下是第二層設備內的MAC-ADDRESS-TABLE
Mac Address Table
------------------------------------------
Vlan Mac Address Type Ports
---- ----------- ---- -----
1 0001.e67f.7904 DYNAMIC Fa0/21
1 0002.a5e1.8108 DYNAMIC Fa0/23
1 0005.7485.f045 DYNAMIC Gi0/1
1 0005.b701.e81f DYNAMIC Gi0/1
1 000a.41dc.bc19 DYNAMIC Gi0/2
1 000a.42b6.d7fc DYNAMIC Gi0/1
1 0050.8d45.3100 DYNAMIC Gi0/2
10 000a.41dc.bc19 DYNAMIC Gi0/2
贊助商連結
但在routing table中,有可能會出錯,影響到網路整體效能
因為全世界的網卡,理論上MAC都是唯一的
區網內若有好幾張網卡MAC一樣
這會使router無法判斷,有可能造成亂送,形成網路碰撞
MAC跟routing table應該是沒有關係的.
以下是屬於第三層設備的routing table並沒有看到它有使用MAC address ,routing table所使用的都是IP才對.
172.17.0.0/24 is subnetted, 6 subnets
S 172.17.148.0 is directly connected, Serial1/0
D 172.17.128.0 [90/1764352] via 10.17.128.14, 1d20h, Serial1/3
[90/1764352] via 10.17.128.6, 1d20h, Serial1/1
S 172.22.0.0/16 [1/0] via 10.17.160.2
W2K內的routing table(也沒使用到MAC)
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 172.19.11.254 172.19.11.33 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
172.19.11.0 255.255.255.0 172.19.11.33 172.19.11.33 1
172.19.11.33 255.255.255.255 127.0.0.1 127.0.0.1 1
172.19.255.255 255.255.255.255 172.19.11.33 172.19.11.33 1
224.0.0.0 224.0.0.0 172.19.11.33 172.19.11.33 1
255.255.255.255 255.255.255.255 172.19.11.33 172.19.11.33 1
Default Gateway: 172.19.11.254
===========================================================================
你所說的應是MAC-ADDRESS-TABLE才對.
以下是第二層設備內的MAC-ADDRESS-TABLE
Mac Address Table
------------------------------------------
Vlan Mac Address Type Ports
---- ----------- ---- -----
1 0001.e67f.7904 DYNAMIC Fa0/21
1 0002.a5e1.8108 DYNAMIC Fa0/23
1 0005.7485.f045 DYNAMIC Gi0/1
1 0005.b701.e81f DYNAMIC Gi0/1
1 000a.41dc.bc19 DYNAMIC Gi0/2
1 000a.42b6.d7fc DYNAMIC Gi0/1
1 0050.8d45.3100 DYNAMIC Gi0/2
10 000a.41dc.bc19 DYNAMIC Gi0/2
贊助商連結