Questions tagged [ios-xe]

For questions about the Cisco IOS XE system software for switches and routers. It is built on Linux and provides a distributed software architecture that moves many operating system responsibilities out of the IOS process and has a copy of IOS running as a separate process.

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SNMPv3 context on IOS-XE does not seem to work with Prime

We recently switched to SNMPV3 and experience the issue, that there is no client data available within prime anymore. So we quickly read about the SNMP context we need to add to our devices ...
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1answer
46 views

Port Channel issue on Cisco gear

I have a lab where I'm connecting a Cisco CSR1000V and a Nexus 9000 switch. These devices are connected back to back. Relevant configuration is: Router: interface Port-channel1 mtu 9216 ! interface ...
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145 views

Debug ip nat in IOS XE

I used to use debug ip nat in IOS to show NAT translations happening. On a Cisco C1111-8P running IOS XE, this command does not exist anymore: router#debug ip nat % Incomplete command. router#debug ...
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1answer
196 views

Cisco 3850: Process responsible for Softbuffers

There is a command to increase the SoftMax Buffers on 3850 switches: qos queue-softmax-multiplier 200 This is done in percent which means i am doubling the amount of softmax buffer. Before, the ...
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1answer
159 views

Cisco IOS: DNS Servers via DHCP

Simple question: I have following switch configuration: interface Vlan1 ip address dhcp end ip domain-lookup I receive and IP and DNS servers along with it from our DHCP server. At least Windows ...
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1answer
245 views

c9300 command state

I have a C9300-24P switch removed from stack which was configured as slave, after restarting it stops after checking hardware and indicating the switch number as one. The switch ends with Switch: ...
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2answers
235 views

Restricting TFTP access from Host to Router using extended ACL in Cisco IOS

I am trying the below Extended ACLs to restrict TFTP but still I am able to upload files to the router using tftp. Not sure, what is wrong, can you all help? Approach 1: permit udp host <ip> ...
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3answers
175 views

How to exclude interfaces without description on 'sh int description' command using regex?

[Cisco IOS-XE] [4507R+E] How to exclude interfaces without description on 'sh int description' command using regex? Couldn't find any related/previous questions.
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365 views

Cisco qos, service-policy on output interface on 1100 ISR seems ignored

I am trying to configure QoS for a specialty purpose application, and it is the first time I have done QoS. This is on an 1100 ISR with IOS XE 16.09.03. The device is a set of 4 that establish a mesh ...
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1answer
206 views

Cisco dVTI - Virtual-Access interface has no IP address

i'm struggeling with some dVTI Issue on a Cisco ASR1000 box. here is my configuration for the hub site: crypto keyring FOO-KEYRING pre-shared-key hostname r2-foo key iawg8b32hah ! crypto isakmp ...
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717 views

High availability confiugration in Cisco 4331 routers

I need to configure high availability for 2 Cisco 4331 routers. First i was planning to configure using HSRP but later i realized there is another way around called as "stateful Interchasis Redundancy"...
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237 views

What are metrics to measure the load in Cisco Routers

I have a setup of Cisco CSR 1000v routers. I established a GRE tunnel between 2 routers, where the tunnel's source is the GigabitEthernet1 interface. I aim to measure the load on that GRE tunnel. The ...
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1answer
268 views

Use BFD on a Virtual-Template Interface

I would like to know how I can configure Bidirectional Forward Detection on a Virtual-Template interface. Tested on IOSv and IOS-XE (ISR-4451): router#configure terminal Enter configuration commands,...
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499 views

How to enable RESTCONF server in IOS-XR?

I aim to enable RESTCONF server on Cisco IOS-XRv 9000. I did not find online anything about enabling HTTP server in this IOS-XR version. However, with NETCONF server can be enabled. For IOS-XE is ...
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1answer
254 views

Unable to configure SR-TE (Segment Routing Traffic Engineering) in CSR 1000v

I'm trying to configure SR-TE (Segment Routing Traffic Engineering) in CSR 1000v IOS XE 16 using the official tutorial in here Segment Routing Traffic Engineering (SR-TE) I have the same topology in ...
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206 views

SNMPv3 traps on Catalyst 9500

with our new Catalyst 9500 switches we want to use snmpv3 to send traps. Thats what I configured: snmp-server engineID local 1234567890ABCEDF snmp-server group SG_SERVERFARM v3 priv snmp-server trap-...
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1answer
497 views

Cisco 3850-24p stable firmware 16.x.x

Have a query towards the 3850 series switches. Currently making a plan to upgrade a few remote sites from old, stable and steady 3650-24ps (eol awhile back) to 3850-24p. Nothing fancy to support, 1 ...
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1answer
2k views

Default QoS Behavior on Catalyst 3650/3850 Running IOS XE 16.3.6

I am trying to better understand the default queuing behavior on Catalyst 3650/3860 running IOS XE 16.3.6 Denali. Is QoS enabled globally by default? Coming from working with Catalyst 2960X on IOS 15 ...
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1answer
7k views

Upgrade Catalyst 9300 stack without downtime

I have a pair of C9300-24T switches running as a stack and where all connections use symmetric LACP etherchannels. Is it possible to do a software upgrade without downtime? (Meaning that one side of ...
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2answers
481 views

Match DSCP in IPv4/IPv6 packets is not supported for this interface

i have cisco asr 903 (ios xe) i need to limitation Traffic for google-traffic this my configuration ip access-list extended ip-google-traffic permit ip 8.8.4.0 0.0.0.255 any permit ip 8.8.8.0 0.0....
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1answer
45 views

Edit BGP on IOS XE3

i need to edit my BGP Running , and add more Neighbor but when try this FiberISP-Cisco(config)#router bgp 203725 BGP is already running; AS is 203735 FiberISP-Cisco(config)# how to edit and add ...
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2answers
1k views

Can NOT match ACL in an output policy-map

this it my config , access-list 2000 permit ip 8.8.8.0 0.0.0.255 any access-list 2000 permit ip 8.34.208.0 0.0.15.255 any access-list 2000 permit ip 8.35.192.0 0.0.15.255 any access-list 2000 permit ...
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1answer
403 views

CSCvg76186 - Cisco Smart Install Remote Code Execution and Denial of Service Vulnerability

If you missed this Catastrophic severity 1 vulnerability, check the temporary solution below, if you do not want to upgrade your software to a not properly tested software. There are currently, at the ...
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1answer
570 views

Struggling inbound and outbound traffic engineering to/from iBGP peers at different POPs

We are a managed service provider running a small sized network in a single datacentre in Sydney. We've recently deployed a new POP inter-state in Melbourne (both are on the east coast of Australia), ...