Networking

problem VRRP, LACP Nexus 3048TP LAN1K9

Hi, i have problem of synced betewin my 2 switchs nexus 7.0.3.i7.3I use feature BGP, LACP and VRRP (also VPC etc..)But it's impossible of configure correctly the protocolI have many errors :One : In log :%ETHPORT-3-IF_ERROR_VLANS_SUSPENDED: VLANs 9-1...

Cisco CSR8000 need help configuring RTP routing over established IPSEC

Hello,We are configuring virtual CSR8000 over AWS infrastructure, and have configured IPSec tunnel for voice traffic.Tunnel is configured with Public IP tied to physical interface, and RTP endpoint tied to Loopback interface. With this setup tunnel d...

SXP between C9300 and C2960X

Hello everyone,We would like to use our “old” C2960X devices, which we have in large numbers, to connect simple devices such as printers or PCs that do not require PoE. The goal is to use SGT for these devices. I have already read that it is not poss...

The purpose of EIGRP Split Horizon

Hi anyone,Quick question, but am I right in assuming that the purpose of Split Horizon in EIGRP is to suppress unnecessary updates rather than to prevent routing loops?DUAL (and the FC) seems to take care of routing loops, so I'm thinking that is its...

cisco business series 250 bpduguard commands

hello everyone!is there any bpduguard commands in cbs 250 series?I enabled spanning-tree portfast command without the auto mode, and I want to ensure that the ports are protected.

Resolved! switch firmware upgrade and smart licensing

I'll soon be upgrading the firmware on several C9200L-24T-4X with 16.12.4 and several WS-C3850-24XS with 16.9.5 to the newest versions that are stable. These switches are all in a network that is offline, and has (as far as I know) no method to reac...

EEM Set Syslog message to variables

Hey everyone, I need to get the IP Address and The Hostname into 2 different variables. I've got something like this: event manager applet AddHostnameToIPHostevent syslog pattern "DHCPD: Updating 'PTR' RR (.*) -> '(.*).tobi.local.'"action 1.0 syslog ...

How to enable R flag (R-bit) in ipv6?

Hi,how to manually enable the R flag (R-bit) in ipv6 config, let us say in a cisco csr1000v?I have this documentation:https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6/command/ipv6-cr-book/ipv6-i3.html#wp1103499300but unfortunately I could only ...

Data Encapsulation

Greetings, I'm a bit confused regarding the encapsulation process of an ethernet 2 frame. It seems the destination IP address is obtained prior to data even reaching Layer 3 of the OSI model. Furthermore, in layer 4, to my understanding a virtual cir...

How to Fix ICMP timestamp response Vulnerability in cisco IOS

Team,Currently we do not have an ACl on our outside interface. If apply the following ACL will it only block the deny ICMP statements?Extended IP access list DENY_ICMP10 deny icmp any any timestamp-request20 deny icmp any any timestamp-reply30 permit...

Warranty Status of cisco ISR 4431 / K9 Router

We had deployed a cisco ISR 4431 / K9 Router at a customer place and it has gone under ZORO, we had paid the amount for its removal on 27th April 2024 and till date no revert or information has been received by us on this regardThe device Serial Numb...

Cisco SX350 show entire command output by default

Hey guys,I have an old SX350 running version 2.5.0.83.Currently when i'm trying to output a command like show running-config I get prompted to show more of the command as it doesn't show all at once.I am able to use the terminal datadump command to s...

Media Converter suddenly stopped working

I have a TRIPP-LITE media converter Model: N785-H01-SFP that suddenly stopped working on my C9300-24S after I have updated from 17.6.5 to 17.9.4a. The steps I have taken to trouble shoot are as follow:- swapped the sfp on the switch and media convert...

Reintegrating Replacement Switch into VPC Pair: Key Checks

"I'm seeking guidance on reintegrating a replacement switch into our production environment following a hardware failure. We utilize a VPC pair configuration, and one switch suffered complete hardware damage. We've obtained a replacement through the ...

How to postpone DNS lookup until after ISP DHCP lease

A branch office router is configured to connect to the HQ VPN hub router. The tunnel destination is 'dynamic' and there is an IKEv2 client configuration stanza to help with this. Here's a chunk of the startup config:ip domain lookupip name-server 200...

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