Questions tagged [vss]
For questions about Cisco Virtual Switching System (VSS). For instance, you want to convert your 6500 Series switches with Supervisor 2T to run as one virtual switch. Therefore you have questions about how to enable VSS and what to consider before doing so.
16 questions
1 vote
1 answer
134 views
Understanding the Role of Member Device in Cisco 3850 VSS Stack
Clarifying the Role of Member Device in VSS Domain Configuration I am trying to understand the role of a device in a VSS domain as a "member." What does it mean for a device to be a member? ...
1 vote
1 answer
290 views
VSS for layer 3 only 6500
I have 2 6500 at the core, that have only L3 links to the DC and the campus. I'd like to set VSS but I'm wondering if it's possible in such scenario. It uses OSPF for the routing. I'll have the ...
1 vote
2 answers
711 views
VSS back to back like vPC back to back
I know vPC back to back to avoid spanning tree between two pairs of Nexus. But I've two 4500 pairs and I need to connect them. Is there a way to do something similar to the vPC back to back to don't ...
1 vote
2 answers
812 views
mLACP or vPC on L3 interfaces
I just want to know if it's possible to implement mLACP (with VSS) or vPC on L3 interfaces. I just can't find any answer to this on cisco doc. Thanks,
5 votes
1 answer
276 views
Cisco 6500 Series and Safe Harbor Testing
It's time for our company to upgrade our Core switches (2x 6509 Sup720 in VSS). My question is if we should care about choosing a IOS image which has the certification "Safe Harbor" or not since the ...
2 votes
2 answers
3k views
Alternatives to VSS and vPC?
Is there any alternative to Cisco's VSS or vPC? I mean not with other vendors, just Cisco? Because I'm planning a new network design here in our company and I'm not really sure, if there's an ...
4 votes
2 answers
2k views
Stacking Cisco Catalyst 3850 via Fibre?
I'm working at several new network concepts for our company and the challenge is to stack at least two Catalyst 3850 over a distance of 200-300 meters. I know there are other possibilities like VSS or ...
2 votes
2 answers
1k views
Multi-Node VSS core, how to configure?
In this diagram we have 4 Cisco 6500 switch, which are connected via standard 10 GB VSL links. The questions are: Since we could only have one Active and one Standby, which one of these switches will ...
3 votes
3 answers
2k views
VSS between 4503-E & 4507+E
Is it possible to deploy VSS configuration between Catalyst 4503-E and Catalyst 4507+RE ? This is what I am trying to do, but at VSL establishment I get the following error messages : *May 26 04:35:...
4 votes
1 answer
3k views
6807XL CPU process stuck at 25 / 30 %
I've recently installed a new 6807XL Chassis in VSS in my datacenter. After 3 weeks, I keep seeing the CPU usage around 25% (per second, per minute or per five minutes). Looking at the historical ...
5 votes
2 answers
2k views
4500E / 4500X VSS pairing
Is it possible to combine a 4500E with a 4500X into a VSS pair or do they have to be the same model to pair up? If it requires same model, is it due to hardware or software? For example if it is ...
11 votes
3 answers
1k views
Does Cisco 6500 VSS improve or hurt MTBF?
I understand the benefits of the Cisco 6500 VSS with the obvious selling points of single management, single routing instance, STP elimination, port-channels across chassis, etc. With two standalone ...
12 votes
1 answer
4k views
NX-OS peer-switch issues with 6500 VSS
I'm bringing up a new pair of Nexus 5500s running NX-OS 5.2 and I'd like to make use of the new vPC Peer Switch feature: The Virtual Port Channel (vPC) peer switch feature addresses performance ...
14 votes
3 answers
3k views
Why we get high fluctuation on bandwidth measurement Cacti graph?
We were on redundancy test of Etherchannel and Routing on our network. During this intervention we made some measurement. Our monitoring tool is Cacti for graph. The equipment monitored is a 4500-X ...
11 votes
3 answers
7k views
What are the alternatives to OTV for stretching a layer 2 network across 2 datacenters?
We want to find a "safe" way to stretch layer 2 network across 2 data-centers, and since we don't have any equipment running NX-OS on either data-centers we can't use OTV. So what are the alternatives ...