Cisco Catalyst Center
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2147 PostsActivity in Networking
Cisco SD-WAN prefix list & data prefix list update
Wanted to understand the best practices when updating the prefix-list & data prefix list in SD-WAN network.For example I have the below prefix-listlist_abc: 10.10.10.0/24This prefix list has been used in Centralized policy.I wanted to added new subne...
CBS350 IGMP and filtering unregistered multicast
Hi.We have issues with CBS350 and SG350 switches when it comes to deal with multicast in the following ranges:Local Network Control Block (224.0.0.0 - 224.0.0.255 (224.0.0/24))Internetwork Control Block (224.0.1.0 - 224.0.1.255 (224.0.1/24)) We use t...
Which IPv6 address range is suitable for anycast addresses. list below
Which IPv6 address range is suitable for anycast addresses for distributed services such as DHCP or DNS?2001:db8:0234:ca3e::1/1282002:db84:3f30:ca84:be76:2/64The first one isn't a range. but people are saying that the second one is invalid. But why?
Keep Up Interface to a device even when peer-link goes down on Nexus
Hello,i have a pc connected to VPC Peer Switch (vPC2) which has the secondary role. vPC2 builts a vPC with vPC1. How can i configure the port to always keep up the connection for this device, even when peer-link goes down (dragging out the cables).In...
IP routing using domain
The host for my current server (Windows Hyper-V machine with four or five VMs) that handles my email and web sites is going away. I'm planning on moving that physical server to my house and using DDNS to route that traffic in. Realize this is very lo...
Resolved! WS-C3850-24P OS/Firmaware
Hi all,i get a cisco switch, model WS-C3850-24P, and when i'm looking for a OS/firmware update i have to chose between:Catalyst 3850-24P-E SwitchCatalyst 3850-24P-L SwitchCatalyst 3850-24P-S Switch but with show version i get just only "WS-C3850-24P"...
Redundancy Over VSAT Link
Hi, we have a WAN and VSAT connection to one of the site. WAN is primary and VSAT is secondary link.We have dedicated router for WAN and VSAT. VSAT link is connected to one of the LAN access switch.Could you please help me, what kind of configuration...
Simple nat config refuses to work on Cisco ASR 1001 ???
I have simple nat config which I need to use:ip nat pool test 40.0.0.3 40.0.0.3 netmask 255.255.255.0ip nat inside source list 1 interface GigabitEthernet0/0/1 overloadip nat inside source list 2 pool test overloadaccess-list 1 permit 10.0.0.0 0.0.25...
Configure Port-channel and vPC in advance in Nexus 9K
hi,i'll be configuring a new N9K switch to replace a C9300.my question is, can i configure in advance the port-channel and vPC in the N9K even without the SFP inserted and fiber cables patched?just want to prepare the config so it will be a faster to...
Help with routing vlans
Can someone tell me how do I do routing here ? it does not matter if it is static or dynamic I just want to ping same vlans and also I dont want to have different vlans to be pinged
Interface Vlan administrativamente inativa
Acabei de criar uma vlan, atribuí-la a uma porta em nosso 6509, atribuí à vlan um endereço IP e quando eu disparo o comando, show int vlan 31 ele diz que a vlan está administrativamente inativa. Não consigo descobrir o que está acontecendo aqui? emit...
Resolved! BGP using Layer 3 Switches
Hi All,I have 2 networks connected via OSPF. I need to route the connected networks to a third network via BGP.I noticed that BGP peering is established but no entry is visible on the routing table.Below is an extract of BGP config:router bgp 65200.1...
Trunk commands for ISR ESM?
Hello,At my home, I had an 8 port 2960G switch die after a power outage today. I replaced it with a ISR 1921 that has an 8 port ESM. It's been a very long time since I messed with configuring ESMs... My plan was to just copy over all of the switch...
C9300 对接portal该如何配置
cisco Ios XE software,version 16.12.02 cisco C9300-48S 各位大佬，C9300对接portal该怎末配置，查文档写的看不懂<
4 standalone C3650-24PS switches configure stack in production network
Hi Guys,Currently we are using 4 standalone C3650-24PS switches in the production network. Planning to configure these 4 switches into stack. Can anyone please tell me what the precautions are to be taken while configuring the stack.I mean any change...
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