ā01-01-2017 08:46 PM - edited ā03-08-2019 08:46 AM
Hi,
In 6513 if we have two SUP, one will be active another one will be standby. in 6500 switches backplane is lies on SUP engine not like Nexus. so if we have two SUPs one active other one is standby so only one SUP will provide backplane capacity?
KR,
ā01-02-2017 07:45 AM
Hi
if one sup is active you will get the throughput just from that sup if that's what your asking ? the 2 sups don't combine for throughput as one is standby from my understanding of it anyway, that's how ive read it through the docs
http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/prod_white_paper0900aecd80673385.html
Cisco Catalyst 6500 Backplane
The Cisco Catalyst 6500 incorporates two backplanes. From its initial release in 1999, the Cisco Catalyst 6500 chassis has supported a 32-Gbps shared switching bus, a proven architecture for interconnecting line cards within the chassis. The Cisco Catalyst 6500 chassis also includes a second backplane that allows line cards to connect over a high-speed switching path into a crossbar switching fabric. The crossbar switching fabric provides a set of discrete and unique paths for each line card to both transmit data into and receive data from the crossbar switching fabric. The first generation switching fabric was delivered by the switch fabric modules (WS-C6500-SFM and WS-C6500-SFM2), each providing a total switching capacity of 256 Gbps. More recently, with the introduction of the Supervisor Engine 720, the crossbar switch fabric has been integrated into the Supervisor Engine 720 baseboard itself, eliminating the need for a standalone switch fabric module. The capacity of the new integrated crossbar switch fabric on the Supervisor Engine 720 has been increased from 256 Gbps to 720 Gbps. The Supervisor Engine 720-3B and Supervisor Engine 720-3BXL also maintain the same fabric capacity size of 720 Gbps.
Depending on the Cisco Catalyst 6500 chassis, the crossbar switching fabric maps out a series of fabric channels (otherwise known as paths into the crossbar) to each line-card slot in a slightly different layout. Each chassis fabric layout is detailed in Table 1.
Table 1. Chassis Slot Options
Chassis |
Supervisor Engine 32/ Supervisor Engine 720 Slots |
Classic Line-Card Slots |
Single Fabric Connected Line Cards |
Dual Fabric Connected Line Cards |
Cisco Catalyst 6503 |
1 and 2 |
2 and 3 |
2 and 3 |
WS-X67XX line cards not supported |
Cisco Catalyst 6503-E |
1 and 2 |
2 and 3 |
2 and 3 |
2 and 3 |
Cisco Catalyst 6504-E |
1 and 2 |
2 thru 4 |
2 thru 4 |
2 thru 4 |
Cisco Catalyst 6506 |
5 and 6 |
1 through 6 |
1 through 6 |
1 through 6 |
Cisco Catalyst 6506-E |
5 and 6 |
1 through 6 |
1 through 6 |
1 through 6 |
Cisco Catalyst 6509 |
5 and 6 |
1 through 9 |
1 through 9 |
1 through 9 |
Cisco Catalyst 6509-E |
5 and 6 |
1 through 9 |
1 through 9 |
1 through 9 |
Cisco Catalyst 6509-NEB |
5 and 6 |
1 through 9 |
1 through 9 |
1 through 9 |
Cisco Catalyst 6509-NEB-A |
5 and 6 |
1 through 9 |
1 through 9 |
1 through 9 |
Cisco Catalyst 6513 |
7 and 8 |
1 through 13 |
1 through 13 |
9 through 13 |
In all but the thirteen slot chassis, each line-card slot has two channels in and out of the switching fabric. The thirteen slot chassis has one fabric channel to each slot in slots 1 through 8 and two fabric channels to each slot in slots 9 through 13. The crossbar switching fabric allows each line card to forward and receive data to every other line card over a unique set of transmission paths.
ā01-02-2017 08:28 PM
Thanks Mark really helpful. One more thing. In Nexus we have 10G interfaces up to 48 port on F2e Line cards. Do we have 10G support on 6500 with all dedicated 10G interfaces or their bandwidth is shared based on port grouping.
ā01-03-2017 01:08 AM
its shared , take a look at this for 6500 blades last updated start of January last , most are ratio based , I don't see any 48 port blades available though , max 16 , maybe there some in the pipeline but I think the current sups may struggle with a full 48x10gb that's why they may not be available for the 6500
http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/product_data_sheet09186a00801dce34.html
Main Features and Benefits
Table 1 summarizes the primary features and benefits of the Cisco Catalyst 6500 Series 10 Gigabit Ethernet modules.
Table 1. Cisco Catalyst 6500 Series 10 Gigabit Ethernet Modules Primary Features Comparison
ā01-04-2017 09:44 PM
Thanks Mark
ā01-03-2017 08:57 AM
The 6500E chassis is limited to 80Gbps per slot. I.e., in theory you can support up to 8 10g ports w/o sharing bandwidth.
Some (all?) of the higher density 6500 10g port line cards support an optional "performance mode". This mode deactivates ports to bring the subscription ratio down, sometimes to 1:1. When not active, yes, ports on higher density 6500 10g port line cards are in groups that share bandwidth.
BTW, the newer 6807 has a much higher bandwidth design for its line cards slots, but no current supervisor, even the 6T, supports the maximum bandwidth the chassis allows.
ā01-04-2017 09:43 PM
Thanks Joseph
ā01-03-2017 06:24 AM
In all but the thirteen slot chassis, each line-card slot has two channels in and out of the switching fabric. The thirteen slot chassis has one fabric channel to each slot in slots 1 through 8 and two fabric channels to each slot in slots 9 through 13.
Actually the 6513E supports two fabric channels to all slots. The fabric channel limitation you describe isn't a limitation of the chassis, it's a limitation of the sup720 fabric. The sup2T supports the 6513E's extra fabric paths, it also supports double the bandwidth, i.e. 80Gbps to all 6513E slots.
ā01-03-2017 06:24 AM
Thats good to know thanks I didn't even see anything about the E series for that model in that doc when I was reading it
ā01-03-2017 08:58 AM
When you speak backplane that's usually taken to mean just the chassis connections that "glue" inserted line cards together. As far as I know, there's no (6500) redundancy for that. Mark's post better explains.
When a supervisor or supervisors are inserted they support operation of part of the chassis backplane as a system bus.
Later supervisors (i.e. sup 720 and later) provide a switch fabric. However switch fabric cards (one or two) could be optionally used with the sup2.
With fabric, whether provided by optional fabric cards or supervisiors, you may have one or two, but with two, only one is actively used. The other is in standby.
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