Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [ios]

The operating system used on the majority of Cisco's routers and switches; a package of routing, switching, internetworking and telecommunications functions tightly integrated with a multitasking operating system. For Apple's mobile device OS, use apple-ios.

309 questions
2
votes
2 answers

Using EIGRP to Advertise a VPN Tunnel Route

I have several routers all connected via a MPLS netowrk and one that is not. The one that is not part of the MPLS network is connected to one that is via a VPN tunnel. All the routers on the MPLS network advertise their routes with EIGRP. Is there…
Kyle Brandt
  • 83,619
  • 74
  • 305
  • 448
2
votes
2 answers

Route-Map vs ACL for Cisco NAT

Is there pros and cons of using route-maps vs access-lists for network address translation on a cisco router?
Kyle Brandt
  • 83,619
  • 74
  • 305
  • 448
2
votes
0 answers

How can one determine what Kerberos key encryption algorithms are supported on a Cisco IOS device?

When attempting to load an SRVTAB over TFTP, I receive an "Unsupported keytype" error: abc(config)#kerberos srvtab remote 1.2.3.4 abc.srvtab Loading abc.srvtab from 1.2.3.4 (via Vlan123): ! [OK - 121 bytes] Unsupported keytype 18! Discarding... No…
eggyal
  • 402
  • 5
  • 16
2
votes
1 answer

How can an iPad be unsupervised, if the configurator Mac which supervised it is lost?

When supervising iPad 4 devices running IOS8 using Apple Configurator. What happens if the Mac running Apple Configurator blows up and the backups are lost? I understand that iPads can only be unsupervised using the Mac which originally supervised…
leftcase
  • 710
  • 3
  • 10
  • 18
2
votes
1 answer

Cisco 7604 router runs out of memory when loading the IOS image, yet runs a different image with similar reqs

I am experiencing an unusual memory issue with a Cisco 7604 router, specifically the memory on the Supervisor Engine (SUP32-GE-3B) and how it pertains to IOS requirements. I was preparing the router for a customer, but it crashed when attempting to…
Liesmith
  • 235
  • 2
  • 9
2
votes
1 answer

Packet loss on between firewall and uplink?

I have a moderately complex network topology between my external firewall and the internet, as shown below. Every so often - I haven't found a pattern yet - we're getting a significant degree of packet loss, around 25%. Most of the time it's under…
Tim Brigham
  • 15,545
  • 10
  • 75
  • 115
2
votes
0 answers

Trying to change a custom VPN port back to the original on Fortigate 40C

We recently changed our firewall and bought a Fortigate 40C device. We wanted to use our old VPN settings. The Fortigate support technician told us that this model was new and he didn't know it in detail (or he was still learning networking, I'm not…
Montag451
  • 248
  • 1
  • 4
  • 19
2
votes
1 answer

Certificate 'not verified' when doing 802.x1 authentication on Apple ios

I've setup a new wifi network including a Freeradius server. Everything works fine except that Apple iOS gives a 'certificate not verified' warning when connecting. When the user accept the certificate, everything works fine. I've verified the…
user196611
  • 197
  • 3
  • 10
2
votes
1 answer

cisco ios - syslog version

I am writing small article on Syslog and I was wondering, if there is any resource that tells me what version of Syslog is supported in what ios version? By Syslog version I mean rfc 3164/rfc 5424/some custom 'Syslog' protocol?
Andna
  • 125
  • 4
2
votes
0 answers

Strongswan ipsec <--> iPhone, can't access LAN

I'm trying to connect to my LAN with iPhone, using Cisco IPsec VPN connection. I can connect to VPN, but I can't access any LAN devices. Hardware/Software: Strongswan 5.0.4, running on router - Asus RT-AC66U Firmware:3.0.0.4.374.34_2 (Merlin…
OldFox
  • 121
  • 3
2
votes
2 answers

How does Arista EOS and Cisco IOS encrypt tacacs+ encyption keys?

We're using tacacs for AAA on our network devices, and I'm interested/curious in how our devices are encrypting the passwords device side. Following the Arista EOS manual, page 139, I'm running: switch(config)#tacacs-server key 0 cv90jr1 The guide…
David Mah
  • 158
  • 6
2
votes
1 answer

Cisco - Port's configured trust state is now operational

I am looking at a Cisco switch's log at work and am a bit confused by how verbose it can be at times. For instance, we use automatic QoS here and I often see this when phones are plugged: Mar 18 15:22:40: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED:…
gparent
  • 3,601
  • 2
  • 24
  • 28
2
votes
2 answers

Cisco IOS router config -- how to disable SSH / SNMP on all but loopback address?

Sorry for the naive question; a quick reading of the cisco docs doesn't answer this question... So I've got a router (say for the sake of argument a 4500 running IOS 15.x) It has interfaces in 3 different subnets -- 10.0.0.1/24, 10.0.1.1/24, and…
chris
  • 11,944
  • 6
  • 42
  • 51
2
votes
2 answers

How to determine most stable Cisco IOS release?

This post is about a Catalyst 4948E switch. I was looking on the download page and realized that there are no "GD" versions available. Are the "ED" versions stable? Even if you change "ED" to "GD" in the URL the IOS images are still the…
Chris J
  • 21
  • 1
  • 2
2
votes
2 answers

Factory Reset my Cisco 1841 Router, Serial cable required?

Is it possible to connect to my Factory Reset Cisco 1841 router without the blue com cable? For instance is there a default IP address I can connect through one of the ethernet interfaces? I just did a "write erase" comman
asolberg
  • 121
  • 1
  • 2
1 2 3
…
20 21