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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.

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Cisco 881 throughput/bandwidth issue

We have a dedicated 30Mb connection (up/down) from our ISP, but we can only seem to get 10Mb (up/down) from the router. Does anyone know what we're missing, or how we can tweak the settings on this router to fully utilize the 30Mb connection. I've…
user177024
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Cisco IOS Router and Azure VPN - tunnel established, but traffic is not flowing

I am trying to connect a Cisco IOS router to Azure via the IPSec VPN. I have used the Cisco ISR template to establish a tunnel from my router to Azure. In the Azure control panel, I can see that the connection is established. However, while "Data…
Timothy
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Temporarily reduce Cisco trust level

I'm a new network admin and I'm looking through the various config files we have in our routers/switches/asa. I'm wondering if there is a way to lower trust level that my login has from 15 to something that is read only. So if I log in to our…
Jared
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Cisco Archiving of Logs - Rebooting device resets file count but doesn't remove files

We are using the cisco IOS feature of configuration archiving and it has been very useful. One thing we are finding is that we have set the maximum file count to 14, which is fine. Except when we reboot the router, the counter is reset and it…
Lance
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Cisco ASA 5520 is missing management interface

The ASA 5520 show version shows the following Cisco Adaptive Security Appliance Software Version 8.4(2) System image file is "Unknown, monitor mode tftp booted image" Config file at boot was "startup-config" ciscoasa up 1 hour 10 mins Hardware: …
T. Webster
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c1841 unable to recognize HWIC-1T (smart serial) card. any idea?

I have this problem where c1841 router unable to verify HWIC-1T card (with smart serial connector), you have to know that i have other routers with IOS c1841-ipbasek9-mz.151-4.M5 and c1841-ipbasek9-mz.124-24.T5 on its flash and with ROM ver "Version…
alsadk
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IOS Port Forwarding and NAT involving a VPN

We have a Cisco 1921 router running IOS 15.1 at one of our branches which is connected via a L2L IPsec VPN to a ASA5510 running ASA 8.2 at our headquarters. The network looks something like this: 192.168.14.0/24 - RT - Internet - ASA -…
Mtz
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IOS Nated port forwarding

I have cisco ios router with ios C1900 Software (C1900-UNIVERSALK9-M), Version 15.2(4)M1. And I have setup Nat with port overload (one public IP). And there is a static mapping: ip nat source static tcp 192.168.1.42 7780 interface GigabitEthernet0/0…
damiankolasa
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IPsec with various subnets on one side

I have the following situation: Client subnet(192.168.0.0 /24) ----> Router ----> Internet ----> ASA(172.17.0.2 /24) ----> (172.17.0.1 /24)Gateway ----> (10.0.0.0 /8)Many subnets I need to logically connect the client subnet to…
FrediWeber
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Cisco ACL Block by Packet Length

I am presently blocking a small scale DDOS attack using IP addresses but all the packets are the same size, 1514 bits and I kind of don't want to fill up an ACL rule with a bunch of IPs. After reading the Cisco documentation it should be possible to…
Al Katawazi
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What are Serial network interfaces?

I am reading through documentation which talks about "Serial network interface" something which also shows up when IOS boots. I never see "Serial network interface" defined anywhere. If my router says 2 Serial network interface(s) what does that…
T. Webster
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EasyVPN vs Site to Site VPN bandwidth use

We have recently switched from site-to-site VPNs to EasyVPNs. At around the same time, we noticed increased bandwidth use. Does anyone know whether these two VPN methods use noticeably different bandwidths?
Edward Hibbert
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dot3StatsDuplexStatus not firing from Cisco Switch

Anyone have any luck with this Trap dot3StatsDuplexStatus OID = 1.3.6.1.2.1.10.7.2.1.19 I am able to test the OID by doing an SNMP walk which shows the correct information, however no Traps are ever fired for this? Thanks all!
Jim
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Cisco AP, how to show dot11 wpa handshake timeout?

Please help me with a newbie question regarding Cisco AP CLI . According to this Cisco doc , I know how to change WPA handshake timeout value to 2000 milliseconds. Cisco1242AG-1(config)#dot11 wpa handshake timeout 2000 But, how do I query its…
Jimm Chen
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Route-map changing from permit to deny retains the match tag values

I have a route-map configured on my cisco router with name say s1 and sequence number 10(default) which contains a match tag 10. If i again try to configure the same route-map name with same sequence number 10 (default) with a newer match tag 20 it…
Hemanth
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