Switching

Dot1q trunk causes block port go to forwarding

HiI have three 3560 switches in a fully-meshed scenario, an access switch and 2 distribution switches. when connecting these switches in the triangle topology, since STP running by default one of port go to blocking mode and then loop is prohibited. ...

Resolved! Etherchannel - Config Question

First time configuring etherchannel. I have followed the documentation, watched videos, etc. The channel is up, but wanted to verify I did it right - and have not missed something.Scenario:Connecting a brand new 3650X into a 3750. The 3750 is the ...

NAT on WS-C4948 Enterprise Services Switch?

I have a WS-C4948 Enterprise Services Switch that I would like to run NAT Overloading between 2 VLAN's. However, I tried assigning the inside and outside interfaces using the "ip nat outside" and "ip nat inside" commands. I have tried these under r...

onnecting two Cisco Nexus 5548UP together but Link is down

I am trying to connect two Cisco Nexus 5548UP switches together using GLC-SX-MMD with multimode fiber but link is still down. Set the interface speed to 1000 and swap the SFP to other slot but result is still down. Kindly help me. Output is belowSwit...

Bug Scrub Advice

Hello Experts,Is there an intuitive way to extrapolate what features a customers is running on a router / switch without actually sifting through a "show run" for a given platform? Are there any automated tools or applications that might help with th...

Port config

Hello, I have noticed on allot of our switches we use the following commands under the interface int gigabitethernet0/1spanning-tree bpdufilter enablespanning-tree bpduguard enablestorm-control broadcast level 10.00 when reading on the first command ...

Resolved! Newb Question on Jumbo Frames

We have a Metro connection setup for replication and we are getting a lot of re-transmits with our storage and they (Dell) made a few suggestions. Currently our SYSTEM MTU is set to 9000 but they suggest 9198. First, does that make sense and second...

does WS-C3750V2-48PS-S support CAT 6 cabling?

does WS-C3750V2-48PS-S support CAT 6 cabling

WHY DIDN'T MQC POLICING WORK IN 6509 ?

I was applying policing command to an input policy in my 6509 switch and get the following message in bold. I could do the same thing in my c3560 switch. can someone tell me why? I attached "show ver, and show module". Eventually I need to apply pol...

Resolved! 4510R+E with Sup8-E VSS support

I'm sorry if this has been covered elsewhere, but I'm having a bit of trouble understanding my options in terms of VSS support for two 4510R+E chassis switches with the SUP8-E cards.These two switches are going to serve as a replacement for two 4507 ...

DHCP lab issue

Hello,I'm trying to build a typology similar to my work in GNS3, I'm using routers with the NM-16ESW module for 16 switch ports. Anyway I'm trying to get the host on the VLAN 90 switch an IP address via DHCP but it's having none of it. Core 1 and 2 ...

Resolved! Stp Monitoring

Hello,My question is the following:i have the next scenario (attached 4 switches with stp.) My doubt is if its possible to do a monitoring of the blocked link between switch 3 and 2. Because we have had some problems with high latency in that link.I ...

fiber-optic link

Hello, I just have one little question :Is it possible to link a HP switch (pro curv 4204vl) and a Cisco switch (2960G) with a fiber-optic link ?And of course, each of them use a transceiver of the brand of its manufacturer Thanks in advanceBest Rega...

Embeded Event Manager on cisco 3560 switch

Can someone help me please? I have EEM configured on cisco 3560 switch. The configuration is below. I want that switch inform me through email when device with particilular IP address become unavailable. For some reason this configuration is not good...