Cisco is a major provider of switches and routers to many medium and large companies. Cisco devices often run IOS or NX-OS. Since Cisco acquired Linksys, the consumer line of switches and routers (which do NOT run IOS) have been rebranded to the Cisco name.
0
votes
1answer
24 views
NetFlow Storage Calculator
I am planning to deploy a NetFlow server (using NfSen/NfDump) for harvesting data from Cisco devices;
Are there standard calculations or guidelines I can use to calculate my server requirements, ...
0
votes
2answers
32 views
Cisco reusing port-channel numbers
I know it probably does not make sense, but can you reuse port-channel number on a LAN?
Examples
Switch 1 -----po1----- Switch 2 -----po2----- Switch 3 -----po1----- Switch 4
I would not do this, ...
1
vote
1answer
54 views
Inconsistent local network behaviour
I'm in an institution with a local area network with multiple labs, all of which access the net through a common proxy, set up in the client browser/app manually, now in one of the labs, the following ...
1
vote
1answer
39 views
+100
Cisco ASA 8.0.4 reset ALL hitcnt
I am trying to reset the hitcnt stats on all the access-list on all interfaces on my ASA5550.
I know about the clear <access-list> counters command.
But isn't there a way to clear the counters ...
0
votes
1answer
46 views
Cisco ASA 5505 Voice/Data VLANs not pinging/routing
Hi i am very new to Cisco ASA 5000 series and have two interfaces that i would like to route between, a data network 192.168.69.0/24 and voice 192.168.70.0/24, I have addded both and can ping the ...
3
votes
1answer
40 views
How to monitor a UDP multicast stream on a cisco network, hopefully with SNMP
We have a LAN with 2x Cisco 4500's as gateways running HSRP.
We're using Exterity HD IP Encoders to take HD video and put it onto the network as a multicast UDP stream (playable in VLC).
I have a ...
0
votes
1answer
16 views
android anyconnect to cisco 3800
I have a Cisco 3800 with Advanced IP Services running version 12.4(13r). For a client to VPN in using AnyConnect, it looks like I use the webvpn config options (SSL VPN). I followed one of the ...
1
vote
2answers
33 views
Cisco Aironet - AP disconnects clients and disappears
I have a Cisco 881w with an AP.
Sometimes, the wifi just drops its clients and the wifi network disappears. The wired network is still working fine.
Also the wifi network reappears after a couple of ...
0
votes
0answers
22 views
SNMP Trap and Alarm Severity
I have an issue over SNMP trap. I am using Cisco's private MIB. There I can use separate OID for alarm severity and it holds the values as follows.
MajorLow = 0
MinorLow = 1
Nominal = 2
MinorHigh = ...
5
votes
2answers
59 views
Monitor Size of the CAM Table on a Cisco Switch
We noticed some stray packets from our switch going out ports they should not have.
After clearing the cam table with clear mac address-table the problem seems to have gone away. Our best theory at ...
2
votes
0answers
26 views
Cisco ASA LDAP Group Privilege Level
We have a pair of ASA 5510s (8.4.3) on which we use LDAP authentication for VPN and SSH access. On all of our Catalyst switches, which use RADIUS, we're able to set the shell:priv-lvl to 15 in the ...
-1
votes
1answer
28 views
cisco access list
here is my access lists which are not applied to any interface yet.
Extended IP access list REMOTE_DESKTOP_DENY
10 deny tcp any eq 3389 host 10.0.0.2 eq 3389
Extended IP access list ...
0
votes
3answers
83 views
ARP broadcast and router performance
My employer subscribes to a fiber based leased Internet from a publicly owned incumbent ISP. The ISP admin says that he cannot give a subnet bigger than /30 because he fears that the ISP edge router ...
-1
votes
0answers
43 views
Sharing broadband using a Cisco router
I have a Cisco router and a TP-Link broadband router. The TP-Link router connected to an ISP broadband 100 MBit/s line and its IP address is 192.168.1.1. I've connected this router to a Cisco 1811 ...
0
votes
1answer
34 views
How to join two Cisco SG200 switches together
I would like to extend a VLAN on Switch 1, to Switch 2, so could I simply use a crossover cable or a normal cat52/rj45 cable to connect a port on each switch together and then assign the two connected ...
-2
votes
2answers
51 views
Are Cisco access ports basically the same thing as a port on an unmanaged switch?
The title should say it all..I'm trying to learn more about VLANs, tagging/trunking, etc.
-1
votes
1answer
26 views
Cisco Website - Unable to login [closed]
Am I the only one having issues with the Cisco website? I am trying to download firmware for the NSS4000 and can't get logged in. I have created like three accounts and they all seem to work but won't ...
2
votes
1answer
31 views
Cisco ASA Command length
Whenever I write some command in ASA , it hides the full command and show the bit of command . What is the way to increase the length of Commands I write in ASA, so it doesn't hide the command written ...
3
votes
2answers
112 views
Criteria for a new router
I am looking at replacing our aging router - an old Cisco 2811 - with a new unit. What kind of criteria should I be looking at to select a model?
I have a few fairly long runs I'm looking at so I'm ...
2
votes
2answers
71 views
Cisco ASA Latency
What is the typical latency added when using a Cisco firewall such as ASA 5505? Are we talking less than 50 microseconds?
0
votes
0answers
16 views
Cisco AP - No local name resolution when connected on Wifi
I have a Cisco 881W (with a Wifi module). The network is whole Microsoft, with a DNS, DHCP, AD, etc.
When a workstation is connected on the network via ethernet cable, which is connected to a switch ...
2
votes
2answers
67 views
What type of fiber do I need for a WS-G5484
I have bought two WS-2948G switches from cisco for a lab. I now need to buy two additional modules for them WS-G5484. I've never worked with fiber so I was wondering if there are differences in fiber ...
0
votes
3answers
73 views
Anomalous behavior of Routers
I am observing anomalous behavior Cisco concerning routers.
Scenario 1:
Ping from Server A to Cisco Router 1905 - 0.3 ms
Ping from Server A through Cisco Router 1905 to Server B - 3.2 ms
...
1
vote
1answer
28 views
No boot command on Cisco 3925
I had to downgrade a couple of Cisco 3925 routers last week and one of the steps in the instructions (link provided) was to change the boot command that was given by the following command:
...
1
vote
1answer
65 views
HP Procurve to Cisco - QOS
I have a HP Procurve with the following:
vlan 4
name "Phones"
untagged 20
ip address 10.50.60.1 255.255.252.0
qos dscp 101110
qos device-priority 10.50.100.10 dscp 101110
qos ...
0
votes
1answer
50 views
No luck with cisco site to site vpn
I have two ASA 5505 running 8.4. Both can access the Internet. ASA#1 has a VoIP gateway behind it that is being NATted, hence the extra rules.
This is on ASA #1:
interface Vlan1
nameif inside
...
0
votes
1answer
65 views
ARP Connectivity on cisco small LAN
I feel so lame to have this doubt, so there is the question : Why do I not have connectivity ?
The case is simple, I have configured the topology and have connectivity between each PC and respective ...
0
votes
0answers
68 views
Configuring an ISP in packet tracer
I am looking for some pointers on how to add an ISP to my network diagram and not sure how to do it. I am use RIPv2 for a small network and now want to directly link an ISP router to router 1 within ...
-1
votes
1answer
32 views
DTE & DCE advice
I am just wondering what the meain differences are between these two and do they need to have different clock rates.
I am right in thinking that if I was linking two routers together via serial I ...
1
vote
0answers
55 views
Cisco with site-to-site and EzVPN - configuration Issue
This is the first time for me to work with Cisco Router.
The below mentioned is my configuration where
Cisco Srv is Cisco 7200 Series Router
XYZ is one VPN Server running on Linux.
RAC is ...
2
votes
3answers
80 views
Cisco ASA and Cisco Switches, how do I determine top senders / receivers?
I'm dealing with a high bandwidth situation and need to determine what host is sending / receiving the most data.
How can I get the logs necessary that will contain this information? I'm OK with ...
1
vote
1answer
27 views
Allow one external client to use a NAT through ASA5510 Security Plus
I keep struggling with Cisco ASA.
How I can make a certain NAT (RDP, SSL or whatever) and secure it by allowing just one external client with fixed internet IP to make use of this NAT?
0
votes
2answers
64 views
How to turn off CDP on a Cisco SD2005?
So I have this Cisco switch (Cisco SD2005) and I need to turn off the (probably) CDP:
14:58:53.235097 01:80:c2:00:00:01 (oui Unknown) > Broadcast, ethertype Unknown (0x8874), length 60:
...
0
votes
1answer
84 views
Cisco Aironet 1200 (AIR-AP1231G-A-K9) issues
I bought a Cisco Aironet AIR-AP1231G-A-K9 off of ebay and am having issues with it.
The first and most alarming issue is the cycling of the status lights. I read the manual and it does not show that ...
-1
votes
2answers
50 views
Win Server Admin vs Cisco admin [closed]
currently I am study in Linux System Administration but I seek another field related to network and security administration, now I have a question: which of these fields is better to master: Windows ...
0
votes
1answer
49 views
Cisco Routers charateristics
I use program called PRTG for monitoring Cisco routers. On each Cisco device I made an SNMP setup: snmp-server community public. So it means that NMS which will make an SNMP request to this device ...
1
vote
0answers
27 views
I need help setting up my Cisco SG-200 and SignaMax 065-1100 MM fiber link
I replaced a broken SignaMax switch with built-in fiber connectors with a Cisco SG-200 unit and a GLC-GE-100FX mini-GBIC. The other end of the run is using a SignaMax 065-1100 media converter and I ...
-1
votes
1answer
49 views
VLSM network subnetting and expanding of ip range
I have a subnet/vlan which is almost full I want to expand it basically my layout currently is below:
VLAN ID Useable IP Range Network Mask
10 192.168.1.1 to 192.168.1.14 ...
1
vote
1answer
117 views
Setting up VLAN on Win Server 2008 VMware guest
We've a Windows Server 2008 host on VMware ESXi 4 and want to isolate it from the rest of the network. That is, I want no traffic from the Windows Server 2008 to be allowed on the normal network. I ...
1
vote
2answers
75 views
What “reachability” means in a routing table?
Check this routing table
track 1 ip route 10.46.52.5 255.255.255.255 reachability
ip route 10.1.0.0 255.255.128.0 10.243.222.1 track 1
ip route 10.1.128.0 255.255.128.0 10.243.222.1 track 1
ip route ...
-1
votes
1answer
56 views
blocking specific dns servers
We want to block specific DNS server requests on our network.
We tried null routing the DNS servers that were to be blocked, and it seems DNS requests are still getting through.
Any suggestions ...
-3
votes
4answers
112 views
Can all routers do load balancing?
I want to use a Cisco 877 router to load balance two WAN connections, each coming in on a different ethernet port. The ISP tells me this isn't possible.
My understanding is that all routers are ...
0
votes
0answers
36 views
Configuring Cisco UCS Manager for iSCSI boot
I am trying to create a service profile that will allow my servers to boot from iSCSI. I have tried all of the steps in this post but ended up having a configuration failure. I am doing this on the ...
0
votes
1answer
50 views
Cisco AP Recovery mode - TFTP issue
I am booting without IOS and I get this prompt:
ap:
then I issue these commands:
ap: set IP_ADDR 192.168.0.111
ap: set NETMASK 255.255.0.0
ap: set DEFAULT_ROUTER 192.168.0.1
ap: tftp_init
ap: ...
0
votes
1answer
43 views
ARP issues across MAN
We have a large area MAN provided by a local cable company. Each location has a cable modem that connects directly back to a central location, i.e. it doesn't cross the internet, it is a private ...
2
votes
1answer
59 views
Interaction of devices with different VLAN configurations
I have an existing firewall+switching layer which is separated into per-client VLANs, with its own numbering strategy, etc. This layer is interconnected by trunk ports such that VLANs numbered on one ...
0
votes
1answer
72 views
Cisco 881w AP factory reset
If I want to return to the factory IOS and configurations of the AP only, I must issue this command:
service-module wlan-ap0 reset default-config
right?
But which IOS is going to replace the ...
0
votes
1answer
48 views
Cisco AP commands dissapeared after IOS downgrade
enter code hereAfter downgrading a Cisco 881w AP (WLAN-AP), something went weird.
When I connect on the WLAN-AP interface using:
service-module wlan-ap0 session
I got this prompt:
...
1
vote
0answers
121 views
Remote VPN - two-factor authentication with Cisco ASA + OpenLDAP
Can somebody give me a pathway (or link to the documentation / how to) to implement two-factor authentication (LDAP password + certificate) on Cisco ASA for RemoteVPN (with Anyconnect client)?
...
2
votes
2answers
73 views
Ping only works after about 30 seconds
Today I am working on this issue and I would love your ideas.
There is a network with something like this
LAN 1 -- WAN CHANNEL--- LAN 2
The LAN 1 have two segments.
When I make a ping from LAN 1 ...
