About CliveG

CliveG · 11-20-2023

Hi, I have a 3 datacentre architecture. See below: DC1: Connection to DC2 and DC3DC2: Connection to Transit ISP 1, DC1 and X-Connect to DC3DC3: Connection to Transit ISP 2, DC1 and X-Connect to DC2 If we look at the above, it is basically a triangle ...

CliveG · 08-09-2023

Hi, I have a lab that replicates our Core network consisting of 6 x C6880-X switches in a 3 x VSS topology. I have VLANs on each of these VSS's that have been assigned layer 3 interfaces and are also installed into the VLAN Database. In normal circum...

CliveG · 08-05-2023

Hi all, Does anyone know if it is possible to utilise a C6880-X Switch in GNS3 please? Thanks

CliveG · 08-03-2023

I am in the process of planning a new DC failover and have a question:Here is the basic layout:Bristol VSS - New failover DC - New upstream and Transit connectivity ready for reconfigurationEdinburgh VSS - Current upstream and transit VSSLondon VSS -...

CliveG · 08-02-2023

We have 2 x C6880-X switches in a VSS. Recently the primary switch in the VSS hardware failed and yesterday I took a spare lab C6880-X we had to replace the faulty one. I have configured the new switch to be the primary and the VSS is all up and run...

CliveG · 11-23-2023

Looks to me like there has been, as I suspected, traffic engineered redirection with MPLS/VPLS as shown below:pseudowire-class <Name>encapsulation mplsload-balance flowAny ideas how I can change this with no disruption on a live network?

CliveG · 11-20-2023

Many thanks for the help.The pfsense has a default route that points to the second VLAN (First VLAN 3249 - Second VLAN 2500) Gateway, which is located on DC1.I will investigate further and put the answer here (if I find one)

CliveG · 11-20-2023

ThanksHere is what happens:1: Hit's the Gateway for the VLAN on DC1 VSS2: It then traverses to another VLAN3: This VLAN sends the packet to the firewall.4: The firewall is a pfsense that I know nothing about. Maybe there is a NAT in place that forwar...

CliveG · 11-20-2023

I agree with you with regards to the Gateway for the Subnets. It has to route traffic to DC3 if they exist there.The problem is that if I ping 8.8.8.8 from DC1, that also goes via THN.The subnets whose gateways are on DC1 are also still traversing DC...

CliveG · 08-09-2023

Hi,I expect this is the problem. Some are tagged to an upstream trunk and some are access but I do not have the equipment to connect.So, my guess is that I need something connected to these ports to bring the VLANs UP?

Member Since	‎06-14-2022 12:28 PM
Date Last Visited	‎11-28-2023 04:51 AM
Posts	58
Total Helpful Votes Received	31

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BGP Route issue

Bringing "UP" a VLAN

C6880 for GNS3

Best solution to possible VLAN issue

C6880-VSS VLANs will not come up

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