The 4006 uses interconnects to transmit data to line cards. Each Line gets 6 Gbps via 6, 1 Gbps interconnects. All traffic must be switched or routed by the superivor. With the exception of the ws-x4424-gb-rj45, there is not over-subscription and the switch can operate at line rate. For the ws-x4424, the card have 4 ports per Gigabit Interconnected.
This is not how I understood the architecture of the 4006, though it may have changed with the SupIII module. I haven't seen an update since then. But, as I understand it, this is how it works.
Every two slots (1 and 2, 3 and 4, 5 and 6) share an ASIC. Each slot has an 8 Gbps connection to that ASIC, and so traffic between slots 1 and 2 will flow at 8 Gbps, traffic between slots 3 and 4 will flow at 8 Gbps, and traffic between slots 5 and 6 will flow at 8 Gbps. But, there is only a 1or 2 (I can't remember which) Gbps connection between the ASICs. So, the switch will operate at line rate within the cards and between the paired slots, but traffic engineering will be necessary to get the best performance.
This is not entirely correct and the architecture of the Sup2 and 3 are different.
For Sup2, there are 3, 12 Gbps (24 Gbps Full-duplex) ASICs but they are not slot dependent. Each switching ASIC connects to ALL line modules but only certain ports in vertical stripes. For example, a 4006 fully populated with 4148-RJ45 line cards, ports 1-16 on each line card will connect to an ASIC, 17-32 the next ASIC and 33-48 to the third Switching ASIC. Traffic moving between ports is Switching ASIC dependent, but not solely dependent on line module.
For Sup3, their is a single 32 Gbps ASIC (64 Gbps) which means all the ports and line modules can exchange traffic at line rate.
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...