Cisco WAN :: Router Failover Concept In 3900 Series
Oct 24, 2011
I am looking for the procedure of the router 3900 series failover. I have got two 3900 series router with the same ISO and other interface cards. What are the main things that I should watch ? Does the standby router takes the same ip of active router if the active router fails ? How should I configure it.
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Dec 12, 2010
Am trying to do a dynamic configuration of a 3900 series router (3925 to be precise).For the software and licenses, under the IOS technology Package Licenses, what's the significant of SL-39-DATA-K9 and SL-39-SECNPE-K9? Are they really necessary for the router?
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Feb 6, 2013
Can the 3900 series router be ordered or upgraded to a license with advances enterprise services? I have a few of these routers and I'm looking to get the license upgraded if possible.
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Oct 30, 2011
Is there a router (1900-3900 series router) that will support a 100FX fiber connection. We use to use 2800-3800 and 2600-3700 series routers with FX fiber interface now these routers are no longer available and our need for 100Mbps FX is still a requirement.
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Feb 20, 2012
I am trying to configure ISP failover using IP SLA tracking in Cisco 3900 router(C3900-SPE100/K9).
I want to configure below commands:
R1(config)# ip sla 1
R1(config)# icmp-echo 2.2.2.2 source-interface FastEthernet0/0
R1(config)# timeout 1000
[Code].....
configure IP sla static route tracking in Cisco 3900 series router.
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Dec 26, 2011
I have some simple rules on 2 extended lists:ip access-list extended FWINpermit tcp any host 192.36.86.231 eq ftp-data ftp 22 www 443 516 666 671 672 2222permit tcp any host 192.36.86.231 eq 4500 8008 8443permit tcp any host 192.36.86.231 range 5900 5950permit tcp any host 192.36.86.231 range 33434 33550permit tcp any host 192.36.86.241 eq ftp-data ftp 22 www 1935 2195 3306 8888permit tcp any host 192.36.86.241 range 8080 8090permit tcp any host 192.36.86.241 range 33434 33550ip access-list extended FWOUTpermit tcp host 192.36.86.231 any eq ftp-data ftp 22 www 443 516 666 671 672 2222permit tcp host 192.36.86.231 any eq 4500 8008 8443permit tcp host 192.36.86.231 any range 5900 5950,The issue is that 192.36.86.231 can access internet, and 192.36.86.241 can not.Is there a way to troubleshoot 192.36.86.241's connection/packets flow?
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Jan 1, 2013
I am setting up a DMVPN between several dozen sites using 2800, 2900 and 3900 series ISRs. The DMVPN Design Guide recommends current 12.4 or 12.4T IOS, but the DG was last updated in July 2008. I cannot seem to find any recommendations newer than this. I'm hoping Cisco or the community can give me an updated recommendation.
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Jun 4, 2013
We are migrating from a Microwave T1 WAN to a Fiber ring WAN which I'll be connecting to our providers Ciena Metro E switches. Eventually we are going to move away from the routers, but the network is a little too complex as well as spanned across a lot of miles. Since I am the only networking personnel here, I would like to first simply migrate to the fiber by simply moving the connection configs off of the T1 interfaces, and onto one of the Gig interfaces on the 7206 and on one of the Fe interfaces on the 3900 (which is actually a 3700 series because the line card on the 3900 is toast). If this works, I will need to purchase Fe line cards for the 7206, because I found out that the virtual interfaces do not support Policy Mapping for our QOS and Multicasting.
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Mar 7, 2012
I'm looking to use 861s at few remote sites connecting to a 881 in the main office using Easy VPN. If I was to get 2 ISPs at the main office, can I configure it in a way that if the primary WAN failsover to the secondary, the VPN tunnels from remote sites will also failover?
Would you recommend an ASA 5505 at main office over the 811?
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Sep 15, 2010
We have a 5508 WLC with a few WAP's (1131's and 1242's). Our wireless clients use certificate base authentication against our AD (i.e. both computer cert and user cert are required). However, from time to time I see clients being associated but not authenticated as reported by the WLC. Could it be possible, as some literatures indicate that a client can only be "associated" after it's successfully authenticated? Perhaps I'm not quite clear about the concept.
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Jul 8, 2012
Why is there no DR/BDR concept in EIGRP multiaccess networks? If the purpose of a DR/BDR is to limit excess traffic when there is a change in the topology, why isn't there one in EIGRP? I understand that DR/BDR share LSAs and not routes but the concept is still the same: there is a change in the topology and the change gets flooded to all neighbors, those neighbors in turn flood it to their neighbors on the multiaccess network thus causing excess traffic.
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Feb 1, 2012
CEF concept working in cisco 3750 , 4500, and 6500 switch.If we implement in router how it s working...
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Jun 13, 2013
i have a gateway router going to the internet....using public IP addresses on both interfaces. starting on Monday, traffic would suddenly stop flowing from the inside of the network going out, though i can still ping the outside interface , but when I log in to the router I am able to ping to the internet. so its like traffic is not passing from the outside int to the inside int. I have a 3900 router. other thing is, when i restart the router it will work for some time and then just stop again....
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Jun 2, 2012
why I can't use cisco ehwic-3g-hspa-u card in cisco 2800 series and 1841 series router?documentation said that it should work with that devices but when I installed it, it doesn't work even as device i can't see I am using cisco latest ios advance ent. 15.1(4)M4?
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May 28, 2013
I am in search of a 1 Gig Ethernet WAN module for 2900, 3900 series router.I want to terminate 230mbps link on this module.I found EHWIC-1GE-SFP-CU option but as per service provider it will not support to 230mbps link.
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Dec 17, 2011
I would like to configure the policy base routing (PBR) on router (3900) base on the "specific tcp port" (TCP port 16255) to re-direct the traffic to another FE port.
From cisco web portal, CAT 4500 should support PBR as below:"Policies can be based on IP address, port numbers, or protocols. For a simple policy, use any one of these descriptors; for a complicated policy, use all of them." url...
Does 3900 router has the same features on the PBR? if yes, can it support "source tcp port" and/or "destination TCP port"?
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Jan 11, 2013
I recently upgraded from a Cisco 3900 series router to a Cisco ASR1k router. Since the upgrade, I have internal clients who claim they cannot connect to external VPNs. These internal clients are behind a NAT that routes a public IP address to a group of clients with private IP addresses.
How can I ensure that all VPN traffic is able to pass through the NAT?
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Jan 17, 2011
I have not done much with business routers, but we have a 1700 series with a WAN WIC-1ENET card with a RJ45 connection. We had a T1 line and will be moving to ehternet. We are going to be moving to a 20MB line, and i just wanted to make sure I have the right connections before installing. We also have a T1 line in another loaton and would be moving to this same 2811 router there as well.We would also like to copy over the configuration from 1700 series router to the 2811 router. Would it be easier to do it by hyper-terminal? Also if we keep the 1700 routers are they capable of using layer-3?
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Sep 26, 2012
Transitioning from 3825 to 3945 (OS is 15.0(1r)M13 c3900-universalk9-mz.SPA.151-4.m4). Turning on FDL on the 3825 was easy but the same command on the 3945 doesn't work.
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May 9, 2013
My Cisco 3900 router is not taking the no auto summary command?
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Jul 2, 2011
I have a HQ with two branches, the HQ contains one 3900 ISR router with two WAN connections, the two branche sites each one contains one 2900 ISR wth two WAN connections for each router.
i need to establish a site to site vpn with GRE between the HQ and the two branches, so is it possible to
1-for HQ: i need to configure site to site VPN to the branches using the both WAN connections on the HQ Router like if one site to site vpn is down the other one will be on and works as High Availabilty.
2- same for the branch offices i want use both wan connections with HA in site to site vpn to the HQ.
3-using GRE for routing after configuring IPSEC VPN.
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Oct 9, 2012
Wat will be the default memory and hard disk for SM-SRE-710-K9 and wat will be the maximum support for this module.
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Jun 20, 2012
provide my some (official) info regarding the MBTF for the C2900 and C3900 routers (2911 and 3945)? This info is currently not part of the data sheets.
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May 8, 2011
On my 3900 Router my port seen to be shutting themselves off, they are connected antenna.
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Mar 6, 2012
Can Controller 4400 series work with Aironet 3600 series?
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Jul 24, 2012
What's the main technical differences among the 1140 AP series and the 1260 AP series?I know that the 1260 supports external antennas while the 1140 supports internal antennas, but apart from that, is there any other important difference ?
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May 27, 2012
My Draytek 2710 just dies after 2 years so I was looking for something a little more reliable and noticed the spec of the SRP527W-U.I take it with only one antenna and reading a couple of past discussions, the wireless will only manage n-lite as some people call it i.e. 150Mbps, and not the full 300? Oh, and are the ports still only 100M and not Gig?I know the 547 would tick both these boxes but we are talking twice the price. How does the quality and logevity of the SRP500 series compare to the RV series (which would need an adsl modem) or the Linksys boxes?
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Jun 14, 2011
Does AIR-CT2504-25-K9 spupports AIR-LAP1262N-E-K9 Access Point? How can I check this?
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Jan 29, 2011
The datasheets indicate that the 39xx series ISR G2 routers support AES, but they don't indicate if they handle both AES128 and AES256 in hardware. Via our account manager, we've heard that they only support AES128 in hardware, but not AES256. Given there's no equivalent of an AIM-VPN/SSL-3 module for a 39xx router, this could be a problem for a deployment we're looking at doing.
I can find no document anywhere on cisco.com that confirms that AES256 specifically is supported IN HARDWARE on, say, a 3945E router.
And, if it is supported, are there any performance numbers available for throughput? We're trying to find out if a 3945E is appropriate, or if we need to go with a 7206VXR w/NPE-G2 and VAM2+ module.
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Apr 6, 2011
I just replaced 2800 router this did not have a VPN hardware accelerator with a 3925 that does have a VPN accelerator built in. I copied the same VPN (ISPEC/ISAKMP) config from the 2800 to the 3925 and it works. Is there something special I have to do to enable the hardware acceleration or is it automatically used for every VPN session?
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Mar 12, 2013
I have a cisco 3900 integrated services router. I am a little new to the cisco IOS. I am having an issue getting my LAN network to communicate with the WAN gateway. From hosts I can ping the interface IP address but not the gateway. I have used the default route command of IP route 0.0.0.0 0.0.0.0 [wan gateway from ISP] I have already set up NAT, DHCP, I just cant seem to get the internet working, the following is my config.
Code...
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Jun 10, 2013
i have a cisco router (3900 series) and a add on module (4 x 1 Gig port module). For some reason i cant seem to port channel them and cant do routing (can set an ip address on those ports). I can do port channel and routing on on-board ports. Do i have to enable any commands to do this ?
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Feb 16, 2012
I run streaming multicast video cameras on my network. I stumbled upon the command ip multicast rate-limit. When I configured a test setup in my lab (multicast camera source and a few routers) and tried the command it simply did not work. Moreover, when I went to use the command on a 3900 router in my lab, it was not there.
I take it this command has been deprecated?
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