Support SLB on the Cisco 2821

Is SLB supported in the IOS for the Cisco 2821? I cann't find it in the Feature Navigator:-( And which feature set I have to use? Thank you.

No, IOS server load balancing is not supported on 2800 routers. This feature is availble with 7200 routers and catalyst 6000
series switches..
For more information on the compatibility and the configuration of IOS Server load balancing have a look at the following URL.
http://www.cisco.com/en/US/products/sw/iosswrel/ps5014/products_feature_guide09186a00800eda88.html

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How to view Log on the cisco 2821 Router

Hi,
can any one help me to view the Log on the Cisco 2821 router for any issue occur.
Thanks,
Saroj

Cisco devices use the syslog to manage system logs and alerts. But in Cisco devices there is lack of large internal storage space for storing these kinds of logs.So to overcome Cisco devices has the following two options:
1) internanal buffer — That is a small part of memory buffers to collect log the most recent messages. The buffer size is limited and , when the device reboots, these syslog messages are lost.by default it is on
(If not follow this steps
conf t
logging on
logging console.....console logs
logging buffer size ......set the size of buffer
terminal monitor.......to gets logs on the remote terminal like telnet,ssh etc.
sh logging.........to see buffer logs.)
2) Syslog server— By using this we can send messages to an external device for storing this logs and the storage size does depend on the available disk space of the external syslog server. This option is not enabled by default.
If you have any syslog server please find the below simple config .
conf t
logging host x.x.x.x
logging traps (i.e 0 1 2 3 4 5 .. according to your requirement)
before enabling logging be sure that your router is properly configure to collect proper time from any NTP server or manually configure to get time
command to set time manually on router is (set clock ) or to use ntp server use ntp server x.x.x.x to sync clock to router router.
Hop thant is informative ,
Regards,
Ashish

What are the criterias for supporting the Cisco AP1242?

I need to support and configure the Cisco APs. May I ask what are the additional certificates that I need other than CCNA in order to support the APs.

There are carious certification that might help. For one, the CCNA hs some wireless... you will need a background on basic route switch. Lke mentione earlier, the CCNA for wireless should have alot of information. these certifications just don't cover the 1242's. They cover RF, autonomous, LWAPP. antenna gain and power.... all the other goodies that can help you troubleshoot issues better.

Ask the Expert: Configuration and Troubleshooting the Cisco Application Control Engine (ACE) load balancer

With Ajay Kumar and Telmo Pereira
Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about configuration and troubleshooting the Cisco Application Control Engine (ACE) load balancer with Cisco expert Ajay Kumar and Telmo Pereira. The Cisco ACE Application Control Engine Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers is a next-generation load-balancing and application-delivery solution. A member of the Cisco family of Data Center 3.0 solutions, the module: Helps ensure business continuity by increasing application availability Improves business productivity by accelerating application and server performance Reduces data center power, space, and cooling needs through a virtualized architecture Helps lower operational costs associated with application provisioning and scaling
Ajay Kumar is a customer support engineer in the Cisco Technical Assistance Center in Brussels, covering content delivery network technologies including Cisco Application Control Engine, Cisco Wide Area Application Services, Cisco Content Switching Module, Cisco Content Services Switches, and others. He has been with Cisco for more than four years, working with major customers to help resolve their issues related to content products. He holds DCASI and VCP certifications.
Telmo Pereira is a customer support engineer in the Cisco Technical Assistance Center in Brussels, where he covers all Cisco content delivery network technologies including Cisco Application Control Engine (ACE), Cisco Wide Area Application Services (WAAS), and Digital Media Suite. He has worked with multiple customers around the globe, helping them solve interesting and often highly complex issues. Pereira has worked in the networking field for more than 7 years. He holds a computer science degree as well as multiple certifications including CCNP, DCASI, DCUCI, and VCP
Remember to use the rating system to let Ajay know if you have received an adequate response.
Ajay and Telmo might not be able to answer each question due to the volume expected during this event. Remember that you can continue the conversation on the Data Center sub-community discussion forum Application Networking shortly after the event.
This event lasts through July 26, 2013. Visit this forum often to view responses to your questions and the questions of other community members.

Hello Krzysztof,
Another set of good/interesting questions posted. Thanks!
I will try to clarify your doubts.
In the output below both resources (proxy-connections and ssl-connections rate) are configured with a min percentage of resources (column Min), while 'Max' is set to equal to the min.
ACE/Context# show resource usage
                                                     Allocation
        Resource         Current       Peak        Min        Max       Denied
-- outputs omitted for brevity --
proxy-connections             0      16358      16358      16358      17872
ssl-connections rate          0        626        626        626      23204
Most columns are self explanatory, 'Current' is current usage, 'Peak' is the maximum value reached, and the most important counter to monitor 'Denied' represents the amount of packets denied/dropped due to exceeding the configured limits.
On the resources themselves, Proxy-connections is simply the amount of proxied connections, in other words all connections handled at layer 7 (SSL connections are proxied, as are any connections with layer 7 load balance policies, or inspection).
So in this particular case for the proxy-connections we see that Peak is equal to the Max allocated, and as we have denies we can conclude that you have surpassed the limits for this resource. We see there were 17872 connections dropped due to that.
ssl-connections rate should be read in the same manner, however all values for this resource are in bytes/s, except for Denied counter, that is simply the amount of packets that were dropped due to exceeding this resource.
For your particular tests you have allocated a min percentage and set max equal to min, this way you make sure that this context will not use any other additional resources.
If you had set the max to unlimited during resource allocation, ACE would be allowed to use additional resources on top of those guaranteed, if those resources were available.
This might sound a great idea, but resource planning on ACE should be done carefully to avoid any sort of oversubscription, specially if you have business critical contexts.
We have a good reference for ACE resource planning that contains also description of all resources (this will help to understand the output better):
http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/v3.00_A2/configuration/virtualization/guide/config.html#wp1008224
1) When a resource is utilized to its maximum limit, the ACE denies additional requests made by any context for that resource. In other words, the action is to Drop. ACE should in theory silently drop (No RST is sent back to the client). So unless we changed something on the code, this is what you should see.
To give more context, seeing resets with SSL connections is not necessarily synonym of drops. As it is usual to see them during normal transactions.
For instance Microsoft servers are usually ungracefully terminating SSL connections with RESET. Also when there is renegotiation during an SSL transaction you may see RESETS, but this will pass unnoticed for end users.
2) ACE will simply drop/ignore new connections when we reach the maximum amount of proxied connections for that context. Exisiting connections will continue there.
As ACE doesn't respond back, client would simply retransmit, and if he is lucky maybe in the next attempt he will be able to establish the connection.
To overcome the denies, you will definitely have to increase the resource allocation. This of course, assuming you are not reaching any physical limit of the box.
As mentioned setting max as unlimited might work for you, assuming there are a lot of unused resources on the box.
3) If a new connection comes in with a sticky value, that matches the sticky entry of a real server, which is already in MAXCONNS state, then both the ACE module/appliance should reject the connection and that sticky entry would be removed.
The client would at that point reestablish a new connection and ACE would associate a new sticky entry with the flow for a new RSERVER after the loadbalancing decision.
I hope this makes things clearer! Uff...
Regards,
Telmo

Upgrade Cisco 2821 to IOS 15

Hi everyone,
I am currently going to upgrade the Cisco 2821 IOS to version 15. Do I need to apply any licences for advice ip service after the upgrade. thanks for the help in advance.
Kind Regards,
Lei

ISR G1 doesn't have any "licenses". Just make sure you are upgrading to the same Feature Set as your old IOS.
Read the Release Notes carefully. Make sure you have adequate DRAM and Flash.

Need reference of CCME on cisco 2821

Hello;
I have a router cisco2821-sec/k9 and I want to install the CCME (Cisco Call Manager Express) with 40 users license
What is the reference (to purchase) of the CCME software with 40 users license for the router cisco2821-sec/k9
The IP phone CP-521SG and CP-524SG can operate with a CCME installed on the Cisco 2821?
If not what kinds of the most cheap cisco IP phone can operate with a CCME installed on the Cisco 2821 router
Thank you in advance

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Finally I choose to buy this element in the table
I already have the router cisco2821-sec/k9 and one cisco switch poe
Please the system will work or do I need additional requirement ?
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Reference
Quantity
FL-CCME-48
01
VIC2-4FXO
01
7945G
05
7911G
25

VOIP Card on Cisco 2821

Hi,
I want to set up a VOIP environment in my company. The topology is like this:
PBX1-75xx-WAN-2821-PBX2-phone
PBX2 is a panasonic TD88 Model.
The dial plan will be (from phone-set):
1.dial 8 for PSTN access direct to PBX2
2.dial 9 for accessing branch office under PBX1.
I want to know which module/card shall I choose on cisco 2821 router?
Thanks
Joey

Hi Ivan,
I know little about telephony. But I think the interface is analog. Because it seems using RJ-11 interface on PBX.
Actually,TD 88 get 8-port for connectiing to telecom company. Now we just used 4 of them. I want to use the other 4 interface for voip that may be connected the Cisco 2821.
Do you have any recommendation?
Thanks
Joey

I want to upgrade the IOS of my Cisco 2821 from Version 12.4(11) to v 15.1 (XB), but I have CCME v 4.2 (0), is there any problem if I only upgrade the IOS and leave the CCME as it ?

I want to upgrade the IOS of my Cisco 2821 from Version 12.4(11) to v 15.1 (XB), but I have CCME v 4.2 (0), is there any problem if I only upgrade the IOS and leave the CCME as it ?
Thanks

CME is part of the IOS, so you can't upgrade the IOS seperately from CME.
That said, if this is a production environment you should proceed with caution and be prepared to roll back as you may find bugs, etc.
You should also look at release notes and make sure your phone firmware will still work or needs to be upgraded too.
Brandon

How many Voice connections can cisco 2821 support?

Good day.
I have a cisco 2821 with EVM slot, NME-X slot and two HWIC slots. I have 4 port FXOs on the two HWIC slots. The EM-HDA-8FXS module on the EVM slot can handle 8 FXS connections. Please i would like to know if there is an EVM module that can do FXO connections and also how many voice connections can this router handle in total. Can the EM-HDA-8FXS module handle both FXS and FXO connections?
Hope someone can help me out. My deadline has already passed.
Regards,
Obinna.

Hi, already replied to this in the appropriate forum.
Please do not open duplicate threads.

Does the Cisco 26XX-XM router support E1 CAS signaling

Does the Cisco 2600-XM series router support E1 CAS signalling for its E1 digital voice port or jst only support E1 R2 signaling.
Thanks

Only E1 R2 and E1 PRI.
Taimoor

Changing the Compact Flash on Cisco 2821 Call Manager Express

Hello All,
I'm gonna have to swap the compact flash on a Cisco 2821 who is serving as the Call Manager express and the Dialling Router.
What's the best way of approaching this? As far as i know it doesn't have a second slot? And i just can't plug it in and copy everything from 1 flash to another.
Must i copy all of the files on the flash to my tftp or? How can i be sure that everything will be copied to the new flash? I will be creating downtime i suppose? since when i'm copying towards the new flash the router will not properly work with the previous configuration

So i figured out that i can use the archive tar /create command:
To copy the entire flash towards TFTP:
archive tar /create tftp://X.X.X.X/flash.tar flash:
Now i will have to insert the new flash and probably format it first towards the correct file systems. Then i will have to use the next archive command:
archive tar /xtract "Here i am unsure of the syntax, i want to be copying and extracting the tar I backed up from the old flash"
After these steps are complete can i just reboot the router with the new flash card, won't there be any issues, since the startup config is on the NVRAM it will load the config properly, and i haven't seen any boot parameters but they shouldn't pose any issues since i'm not changing the flash slot.
Thanks for your assistance

What trunking protocols are supported by the Cisco AP1200 series

Guys,
What trunking protocols are supported by the Cisco AP1200 series?
Advanved thanking for your reply

Has to be a dot1q encapsulation.
Thanks,
Scott
Help out other by using the rating system and marking answered questions as "Answered"

Pointing the Cisco 3850 as a Mobility Controller to a central 2504 WLC anchor

There are multiple sites running 3850 as MA/MC with local Wireless access.
There is a 2504 running at a central location setup with a SSID for Internet access. The 2504 is running on software 7.6.120.
Can I setup a mobility anchor from the 3850 MC to the 2504 (with new Mobility enabled) to utilize the Internet Service ?
Most documentation I read seem to suggest to have the 3850 setup as MA and use a 5760 as a MC.

I tested the NME-AIR-WLC6-K9 (Software version 7.0.230) on a Cisco 2821 (I cannot find a spare Cisco SRE 300 ISM to test). It cannot connect to a Cisco 5508 (Software version 7.6.130) running New Mobility. I must turn off New Mobility on the Cisco 5508 before the anchor connection can be established
This is expected as 7.0.x only support EoIP based tunnel for inter-WLC data traffic. Once you enable new mobility on 5508, these inter-controller Data tunneling based on UDP (16667) instead of EoIP.
Unless both end configured for same tunneling method, it won't work. New mobility support in AireOS 7.6.x & 8.0.x as supported software version (it was supported 7.3.x & 7.5.x , but all those codes are deferred)
HTH
Rasika

RPS 2300 together with 3750 - 48 PoE and Cisco 2821

Hi,
I'm wondering what kind of power modules to include in RPS 2300 (750 or 1150 Watt) to provide redundant power supply for 1 x Cisco 2821 router (standart power supply) and Catalyst 3750 with PoE 48 ports.
Thanks

I am not qualified to answer your question... I would like to mention to be careful when calculating power for phones, because some of the phones (especially color) will take more power than others. We ended up only being able to support 24-ish phones on a 3750 due to power limitations.

Configuring lines 1 60 on Cisco 2821

Hi all,
I'd like to know what is necessary to configure the parameter line 1 60 in a Cisco 2821 router with a two E1's direct connected in a interfaca VWIC2-MFT-E1 and two PVDM's modules installed.
When I try to enter the line "router(config)#line 1 60" the ios returns an error message that there are no physical hardware to support "line 2". I just can enter line 1.
Which is necessary to do this?
My best Regards,
Adriano

try to do a show of the interface using the following example and see the output.
#sh voice po 1/1

Support SLB on the Cisco 2821

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