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Forum Posts
Hi, i am trying to make the multilayer switches on the left side of my network redundant however my problem is how do i go at this when the right multilayer switch is the only one that is connected to the gateways for my vlans on the left side if thi...
Hello, when i connect a Siemens Sentron PAC3200 (that is an industrial power sensor device) to a WS-C2960X-48FPD-L switchport, i get about 50% packet loss on that port. The port shows symbol errors. If i connect any other cheap desktop switch/hub be...
Resolved! DHCP server to add in my environment
Hi All, Need some guidance please, in my environment i have L3 switches with two different vlan running with 2 SVI's, So got VLAN 8 and VLAN 9. Vlan 8 172.28.132.0/24 ( public) Vlan 9 172.28.133.0/24 ( staff) I currently have no DHCP server r...
Hello I meet un big and hazardous problem. On C3850-T48 switch I implement 2 VLANs : One Management VLAN : VLAN 400 and One VLAN_Server : VLAN 421. The C3850 is connected via 4 Ports 1 Giga aggregated in Channel Port 10 through C4506E backbone switch...
Hello,recently I'm getting on a syslog server messages from one of my Cisco 3500 XL Switch.It's about 15 - 20 such messages per day.These messages are:Message=<185>2093: 33w3d: %RTD-1-ADDR_FLAP: GigabitEthernet0/1 relearning 5 addrs per min....Messag...
Hello, I need some help to understand an issue that is ocurring on my network. We have two 4500X in VSS doing all the inter vlan routing. I've noticed a few weeks behind that i cannot connect to specific terminals, since PC's, printers and other de...
Hello, I have this Cisco 3750 stack of 3 switches. two trunks going to a distribution stack (same Switch type) but when I allow only three vlans that I need instead of allowed all, I lose connectivity altogether!? is it related to vlan 1? Native ...
Hi I have a simple setup for testing purposes. PC > Switch > Router VLAN 1 network is 192.168.1.0/24 So by default VLAN 1 is the native VLAN. The PC is configured statically with 192.168.1.50/24 with a gateway of 192.168.1.1 The switchport for th...
I can use some assistance with this since I've not created anything like this before. I have 5 switches, 1 Cisco Catalyst 9300 and 4 Meraki MS225-48FP's. The meraki's are our LAN switches that are on 4 different floors. In the attached image B2SW0...
Firstly just to let you know I'm not a network support technican but have some basic knowledge. I need some advice and some possible direction. So thought this would be the best place to come. So I currently have an SG300-20 which is used to wire my ...
Team, switch 4500x-16 with SFP+ with single mode modules are working but tried GLC-SX-MMD multimode 1 Gig module and even though it shows light but not up. not connected with "show interface ten2/1/18" cmd. Show inventory shows the module detected bu...
Dear Community, I have a 4510R+E that is utilizing 2x Sup 7E. When attempting to use SSO as the desired redundancy mode, I am able to configure it but the Modules state they are operating in RPR, which is obviously quite inferior to SSO. I have attem...
Resolved! ROM Upgrade necessary?
Dear Community, I have a 4510R+E that is utilizing 2x Sup 7E. The sups are currently running a very old IOS XE version 03.02.05.SG and ROM version 15.0(1r)SG5. When attempting to upgrade to 03.08.06E I noticed that the supervisors would not see each...
Dear All,Two days back my entire network was behaving in unusual ways.When is connect to core switc(4506e) through console, i found following -00:06:51: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and p...
Resolved! InterVlan Routing SG500
Hi all, Been searching the forum but had no luck on finding answer... I have a SG500-52 switch that I need to configure for Inter VLAN routing. I have 3 vlans: vlan database vlan 100,110,120 exit and the following ip scheme: interface vlan 100 na...
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