To ask you, don't really understand the SW1 and SW2 two convergence devices interconnect,
Convergence is will do VRRP/HSRP,
Imagine, if you don't have this interconnect, then on the second floor, no ring, you can always keep the double running upward flow,
If this case, you can even use GLBP, achieve perfect load balancing,

Some people say that this interconnection line can run traffic, that just think, in the case of HSRP/VRRP, out of the down link failure or equipment, then nature will switch the main case, still won't go Internet line flow,
Even some figure will do this interconnect Ethernet channel, more difficult to understand, don't run flow line, add the bandwidth?

O great god answer

CodePudding user response:

Flow is not only produced in internal and external communication, also can produce flow between internal host, this time to export turn a circle is not necessary,
In addition a lot of places like placed between exports and core exchange transparent firewall, because there is no IP address business interface, so often do not draw out,
When the internal flow to export back is embarrassed,

CodePudding user response:

The building Lord your thinking on traffic by ordinary users "online" thinking of the limitations of the oh,
Network is set and the need to change the thinking mode is the role of network management,