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Hello guys! I have trouble to connect my L3 switch outside internet and I can not understand where is my wrong.Please see my config for  switch L3 and router.Thank you in advance .  L3Gateway of last resort is 172.16.2.0 to network 0.0.0.0C 192.168.1...

A "show ip pim int" command shows multicast switching as "fast". Can we have it use CEF to reduce the load on our router? RTR2(config-if)#do sh ip pim int et0/0 detailEthernet0/0 is up, line protocol is upInternet address is 192.168.0.2/24Multicast s...

Dear all  i need support and opinion for my attached 3 files for my isr router 2911 and 2 switches  ws-c2960x-24ps-li need to know if its fine ? or need to add some command lines or any modification please share to apply it on my devices  many thanks...

I upgraded an ASR1006 using ISSU and followed this documentation. https://www.cisco.com/c/en/us/td/docs/routers/asr1000/configuration/guide/chassis/xe-16-6/asr1000-software-config-guide-16-6/issu-asr.html#con_1145249 Everything is going smoothly unti...

jpl861 by Level 4
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hi, engineers, I have a problem with router 1841 when resetting the router just I type config reg 0x2142 and the second comm reset and power of and on again after that as you see in the pic  

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Resolved! Help with GRE

Hello, Sorry if this isn't the correct spot to post this, I'm new here and new to networking.I'm trying to set up a GRE tunnel from my Edge to New Branch routers.  I keep getting the following error:New_Branch(config-if)# %ADJ-5-PARENT: Midchain pare...

Rudy9746 by Level 1
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Hello Experts, I have a query related to how the DB exchange will happen a broadcast OSPF network with 3 or more neighbors. I know that the routers will use a multicast address(224.0.0.6) send DBD to DR and BDR. And then DR will flood the LS data to ...

Screen Shot 2020-02-08 at 11.57.50 AM.png

Hello. On an IOS router (probably Cisco 881 or similar, with IOS 15.x), we need to filter traffic going to a Layer 2 tunnel, based on the Ethertype field. Here's the ACL:access-list 200 deny 0x1515 0x0000access-list 200 deny 0x1516 0x0000access-list ...

sasha by Level 1
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Hi. How to create an access list which filters out Layer2 packets with specific ethertype on a Cisco IOS router (probably 800 series with IOS 15.x)? Here's how we do it on an IOS switch: mac access-list extended ipc deny   any any 0x1515 0x0 deny   a...

sasha by Level 1
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