03-18-2010 04:10 AM - edited 03-06-2019 10:11 AM
Hi,
I have WS-X4448-GB-SFP Line Card Installed in 4507R Chasis (Classic Chasis not E Series). The chasis supports only 6 Gbps per line card. Which means the line card is 8:1 oversubscribed. As per the Data Sheet
• 48 ports
• 1000BASE-X (SFP)
• Cisco IOS Software Release 12.2(20)EW or later
• IEEE 802.3x flow control
• Bandwidth is allocated across six 8-port groups, providing 1 Gbps per port group
• Enterprise and commercial: designed for server farms and switch-to-switch applications
• Metro Ethernet: designed for service providers to run point-to-point Gigabit Ethernet over single-mode fiber
Now my question is how do you find the port groups. Which ports are part of which port group ... is it like Port Group 1 = Ports 1 to 8 and Port Group 2 = Port 9 to 16 and so on .... or any other way
Thanks
Zeeshan Sanaullah
Solved! Go to Solution.
03-18-2010 06:36 AM
Hello Zeeshan,
we have seen this in action on WS-4548 the port groups are made of :
1-8
9-16
17-24
and so on
I would expect the same on WS-4448
there is a specific document about oversubscription on C4500 linecards
each group shares one ASIC chip with 1 Gbps capability, there is no local switching that is traffic between ports count too.
Hope to help
Giuseppe
03-18-2010 06:36 AM
Hello Zeeshan,
we have seen this in action on WS-4548 the port groups are made of :
1-8
9-16
17-24
and so on
I would expect the same on WS-4448
there is a specific document about oversubscription on C4500 linecards
each group shares one ASIC chip with 1 Gbps capability, there is no local switching that is traffic between ports count too.
Hope to help
Giuseppe
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