Switching

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...

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...

Hi all, does anyone know what vlan 4095 is used for normally ?

Hi Genius,   default route is injected in NSSA even if we configured passive interface.    KA-DOB-DPB-B4-BS-NCN-BSR-C281-01-DOB#sh ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface210.18.0.123 0 FULL/ - 00:00:38 100.65.225.173 FastEt...

Hi ,   I have ISR 4221, with 2 gigabit Ethernet ports and 1 LTE port. I want to use the LTE port as a back up line, when the cable connect is down. but i cant get it working. Below is a snip of my configuration, what did i miss   chat-script lte "" "...

Hi,   first of all - i already read the incompatibility guide and various documents about VPC and VSS. But I keep having problem with:   Connecting a Campus Distribution 6500 VSS (formaly the Core) to 2 Nexus 7000 (7702) (new core). As the incompatib...

Hello,   Is there any document where EEPROM format of GLC-T is explained? I need this for find out by I2C communication what connector type is in SFP.   Best regards, Patryk

I have a strange issue going on with EIGRP. We have a central site (Cisco 6509e) and several remote sites (Cisco 4500x VSS pairs) connected via AT&T ASE. All sites seem to have their EIGRP set up correctly. It all works for the most part, but we are ...

Hello,   I just received two Cisco IE 2000 switches and was just able to complete the Express Setup and now have full access through Device Manager. Is there anyone with experience using Cisco switches in a Rockwell environment? Any configuration adv...

I'm trying to rollback the IOS-XE version on a 3650 switch. We ran the install to change the code from an Everest version (16.6.2) to Denali 16.3.6, but we have yet to reload the switch to make Denali take effect.   However, I want to back out of tha...