Cisco WAN :: 3825 Bring Up Dialer If ISP Interface On Mated Router Goes Down?
Dec 6, 2012
I have two 3825's. Each has it's own ISP connection. Nat is configued for both. They have an ethernet connection between them and I'm running OSPF between the two so the routes propogate. I have qty 11 Dialer interfaces configured on each router (each router has an exact copy of the other routers dialer interface). However, I only want the Dialers up if the ISP connection on the mated router goes down. Much like HSRP I need one to preempt and be active if both ISP connections are up. When one goes down the other Dialers must come up. Each dialer sends a Dynamic DNS host name and IP address pair to DynDNS.org. So I cannot have both up otherwise the DNS names will bounce between ISP#1's IP address and ISP#2's IP address (back and forth). Let me know if any option exists to make this happen. As an aside the ISP's are providing me DHCP addresses so I cannot work off of an IP, it has to be the physical interface (i.e. Gi0/0).
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Sep 11, 2011
I have the below configurations done on a 2900 router. [code]I would like to know, if the IP address assigned to dialer1 interface "20.1.2.133" would be listed in "show arp" ?, as it failed to list on our router and I want to know if this is an expected behavior ?
Secondly, does self ping 20.1.2.133 (dialer interface IP) work ? [code]
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Jun 11, 2012
I have 2 ASR 1006 with ASR-1000-ESP40, ASR-1000-SIP40, ASR-1000-RP2 , and with SPA-1X10GE-L-V2 that should hold an XFP-10G-MM-SR.
i am in the proceed of an implementation and configuration, but i am facing a problem on the interfaces, where i am not able to bring the interfaces up/up and always down/down.
i check the fiber patch cords and the other SFP on the switch WS-C3560E-12D and it is working fine. i also reverse the fibers pins and nothing works
i need only to get the interface to be up/up. i also checked all the hardware compatibility matrix, IOS XE, the SPA are all online (show platforms).... where all seems to be ok and compatible.
all what is needed is to give the interface ,for example, tengig0/0/0 and ip address and no shut and it should go up/up.
One more thing, the XFP is not giving a red light laser, and in the show interface tengig0/0/0 give media type is unknown.
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Feb 10, 2013
We have recently deployed several Ciso 887VAW (IOS 15.1(4)M4) to customer premises and I have come to realise counters show extremely high (not at all accurate) output rate and packets on all of them. [code]
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Jun 21, 2011
I have an 837 ADSL router that the customer is upgrading from a 3 meg circuit to a 10 meg circuit.
The previous vendor used PPOE for connection and we used a dialer 1 interface to make the connection with a user name and password.
The new connection is a straight WAN DHCP no username or password needed.
I realize I can change the dialer interface from negotiate to DHCP but do I still need it ?
Can I replace the dialer 1 interface with IRB ? Should i just keep the Dialer 1 interface since the device is currently set that way and just remove the PPP negotiation from dialer 1 ?
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Jul 4, 2011
I have applied a crypto map (fo ipsec vpn) on the dialer interface (for PPoE connection) in Cisco 2800; every time when the router restarts the crypto map is removed from the dialer interface even though i save the configuration every tim when i apply the map on the interface. Is there any way that the crypto map remains there on the dialer interface after the restart of router.
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May 11, 2013
How to make a Cisco 881 router finally work. I have the following configuration:
Current configuration : 2964 bytes
!
! No configuration change since last restart
version 15.1
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
[code].....
As much as I understand, the VPN tunnel is active.I can access the Internet, but I cannot access anything through the VPN tunnel.
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Jan 9, 2011
having some issues with a configuration using a Dialer interface. The interface comes up and the VPN tunnel comes up, but cannot access any network resources or the Internet.
The things that concern me most are my access lists as I have the static IP address that we are assigned via PPPOE - the IP never changes, but not sure if I can define it in the ACL or if I should be using an ANY tag.
Note: I've changed some IPs and username for security reasons.
!version 15.0service tcp-keepalives-inservice tcp-keepalives-outservice timestamps debug datetime msecservice timestamps log datetime msecservice password-encryptionservice sequence-numbers!hostname C2911-OTO01!boot-start-
[Code].....
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Mar 7, 2012
we have a Cisco 3825 router which does not work well with a DSL modem(ISP provided). I have configured the Gi0/0 port of the router to plug into this DSL modem but it does not ping to the ISP gateway. If we do a shut/no shut on the interface then it work fine for about 30 secs. Sometimes even for 1 hr. Then the packets drop and we cannot pass any traffic through this interface.
Now, if the ISP connection is terminated on a computer it works fine. It works fine without dropping any packet.I have tried various options like using a straight/cross cable. I have tried to configure the interface negotiation for 100/full, 100/half, auto/auto and almost all the options.I have also tried to interconnect the devices using a L2 device like a HUB. Nothing works.
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Oct 15, 2012
I am configuring ISDN Interface on 2 Cisco 886VA Version 15.2(3)T . I am unable to set ppp multilink on the BRI0 interface and on the dialer interface. It's like the command doen't exist anymore.How can I fix that so that i can have 128 K bandwidth between ma 2 sites ?.
Router1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router1(config)#int bri0
Router1P(config-if)#ppp multilink
[code]....
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May 7, 2012
Is it possible to establish a interface dialer on a layar 3 switch?Or is it only interface for routers?I have a c3750 switch (WS-C3750G-24T), and when i try to establish a dialer interface i get an error message:
[code]...
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Apr 15, 2013
I am trying to configure site to site vpn between Cisco ASA and Cisco router 3825, I need to establish the vpn connection with an interface that has security level of 90.I followed the procedure shown in the following link: URL.
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May 19, 2013
i am having cisco 881 router i want to know whether i can configure dialer interface with username and password for my dsl internet connection.
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Mar 7, 2012
We have a Cisco 3825 router which does not work well with a DSL modem(ISP provided). I have configured the Gi0/0 port of the router to plug into this DSL modem but it does not ping to the ISP gateway. If we do a shut/no shut on the interface then it work fine for about 30 secs. Sometimes even for 1 hr. Then the packets drop and we cannot pass any traffic through this interface.Now, if the ISP connection is terminated on a computer it works fine. It works fine without dropping any packet. I have tried various options like using a straight/cross cable. I have tried to configure the interface negotiation for 100/full, 100/half, auto/auto and almost all the options. I have also tried to interconnect the devices using a L2 device like a HUB. Nothing works.
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May 31, 2011
I have my main branch router (3825) and two remote routers (2821's). They are connected through leased lines that do not touch the internet. For various security reasons I have to ensure that the traffic from the remote's are encrypted in a VPN tunnel even though it is still part of a private network.I have went ahead and created the tunnels and I can verify that they are up. I have applied the cryptomap to the correct interfaces, etc.So the question is - How do I ensure that traffic is not just being router out of the interface from the remote sites back to the branch router with or without using the VPN tunnel? I've taken down the tunnels and of course, the traffic is still being passed back and fourth.
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Mar 13, 2012
We have a new 100MB internet service, but we only pay for 10MB and above that is a per/MB fee and not cheap. I want to limit all traffic inbound and outbound only to use up to 10MB on the outside interface of our Cisco 3825.
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Nov 27, 2012
We are using 3825 Cisco router with IOS version 12.4(24)T2. The unknown protocol drops on our GigabitEthernet0/1 interface is increasing. This interface is connected to our modem. What could be causing this unknown protocol drops?
cnshaccent-gw-2#sh int GigabitEthernet0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is BCM1125 Internal MAC, address is ffff.ffff.ffff (bia ffff.ffff.ffff)
[Code]....
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Nov 6, 2012
There are two Cisco 4900M L3 switches and two Cisco 2960 L2 switches. I need to configure the two L3 switches to operate as a redundant pair, as the servers connecting to them are connecting using bonded interfaces, which can only have one default gateway. So these two L3 switches need to have the same Vlan interface 1, 2 and 3 IP's set onto them.How are the two L3 switches made aware of each other? via a normal trunk? Is there some special configration for configuring a mated/redundant pair of switches? or are they both just configured as though they were the same switch, but linked?
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Apr 24, 2013
We have two Comcast 100MB routers. Can I plug these both into the SG200-50? How do I configure the ports?
I have an Apple Extreme Wireless Router that 30 Laptops use. I also have 25 VOIP phones and 10 Desktops that are on an unmanaged switch which I want to convert to the new SG200-50.
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Sep 7, 2012
We have a dsl connection on 897 dsl router at the customers HO.The telephone line is directly connected to router we configured dialer with username and password and it takes a static ip of 212.249.213.xxx.Now he has some branches that are connected through wireless links and he has arranged for a subnet of 8 public IP's in the range 72.70.245.xxx
Can we some how use these public ip's as secondary in the routers dialer interface and assign to the servers in the branches so that it can be accessed through web.
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Jul 11, 2011
I have a NETGEAR Wireless-N 150 Router WNR1000 v2. I am trying to configure it for my LAN which has a DIALER. [code] I tried to configure my NG but it is unable to connect to the network on its own. I have to use CONNECT dialer from my PC to connect which is useless because I can't use my wi-fi enabled devices to access network.
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Aug 4, 2011
Will this router ever see a firmware update so that we can have some additional functionality? The version of Twonky Media server that was bundled with this router was old to begin with, and now we are stuck with it? I tried the E4200 but it just kept spinning my drive that's parked in a ThermalTake BlackX, at least the 3000 doesn't do that, but when can we expect some new firmware, it's been 8 months. I used to love Linksys, but with this kind of support I may have to move to a different brand, and I bet I am not alone. it doesn't break the E3000 like you broke the 4200.
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Mar 9, 2011
I want to configure my router to use 2 ADSL lines each with a dialer and a modem in RFC2684 mode. I have a 2821 (IOS 12.4) with an HWIC-4ESW.
My network topology is like this :
ADSL Modem 1 (RFC2684) --
(Fa0/0/0)
Router -- (Gi0/1) MyLAN
(Fa0/0/1)
ADSL Modem 2 (RFC2684) --/
1. I configure my DSL Modem in RFC 2684. The first use 172.16.0.2/29 and the second 172.16.0.3/29. I connect this devices to Fa0/0/0 and Fa0/0/1.
2. I configure Vlan1 to use the network configured on my modem :
interface Vlan1
ip address 172.16.0.1 255.255.255.248
3. I try to ping my devices :
#ping 172.16.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.3, timeout is 2 seconds:
!!!!!
[code]....
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Apr 8, 2012
I installed this Linksys E1500 yesterday and have had a problem keeping my iPhone 4 and an iPod Touch connected to WiFi.The devices go to sleep. When I swipe the screen and "bring them back" the WiFi is Not Connected. I have to go in and re-enter my network password again. As long as the devices don't go to sleep, they maintain connectivity. Once connected they function properly.
The iPad 2 & Samsung Galaxy S phone we have seem to be keeping their WiFi connectivity, as well as a G62 HP laptop running Windows 7, an older XP machine using a Cisco AE1000 wireless network adaptor and the Xbox 360. The issue is just with the iPhone 4(ios 5) and the iPod Touch(ios 4).
I had issues with the iPad and the Galaxy phone until i disabled WMM Support in App & Gaming.I would bring this back to the retailer but I had it sitting on my desk for about 30 days and it's past their return policy.The firmware is up to date on the Router. I've tried power cycling all the devices including the cable modem & the new router.
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Sep 29, 2011
Im trying to setup a site to site VPN using a Cisco 877, problem is we have no ADSL presentation, we've just been given an Ethernet line to use from another client in the building, If i plug my laptop into the port and use the External IP information given i can use the internet and ping the other VPN just fine, if i place my blank config 877 into the port and set up VLAN 10 to use the same IP information, it cant even ping the local gateway? The port on the router is in VLAN 10 like it should be and the interfaces are all up, the router can ping its local VLAN 10 ip address.
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Jan 5, 2012
I've attached my ASA's config. I can't bring the VPN up by pinging from the ASA but the VPN will come up when someone pings from behind the ISA server. So the problem seems to be routing/NAT on my ASA because my pings aren't being directed out the tunnel. The VPN in question has 64.106.x.x as the peer and AES 256/SHA for phase 1 and 2.
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Jun 26, 2012
I want to configure PAT on the router I have no configuration yet
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Nov 6, 2012
We need to upgrade the RAM on our 3825 Cisco Router. Currently, it's 512MB and we want to upgrade it to 1GB. So do I just order another 512MB DRAM Memory? What is the part number that I need to order?
Here is the show ver:
Cisco IOS Software, 3800 Software (C3825-ADVENTERPRISEK9-M), Version 12.4(24)T2, RELEASE SOFTWARE (fc2)
Technical Support: [URL]
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Mon 19-Oct-09 21:05 by prod_rel_team(code)
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Mar 25, 2012
We use a 3825 router to screen alot of the junk from the internet side or our firewall. Its worked well for the last 4 years buthas rebooted multiple times in the last month for no apparent reason.At this point I think I would prefer to replace it.Our current internet link is 100Mbps and this router handles that quite well. Is there an equivalent that I should replace it with, or should I just buy another 3825 ?One with an OOB management port would be nice.
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Mar 8, 2011
I want to configure HSRP between two different series routers. In my case the router are 3825 and 3925.
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Aug 3, 2011
What is the maximum amount of traffic a 3825 router can take. I know that a 3825 is rated to handle half of a DS3/T3. We are planning to put a 50Mbps point to point metro Ethernet circuit between two 3825's and run encryption over that line. I just want to make sure we don't max out the router as I remember once a customer maxed out a 3825 with a ton or GRE tunnels and the router crashed every time they did their nightly data dump.
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Feb 26, 2013
I am having Cisco 3835 with 2 builtin Gig ports , now We need to add two more Gig ports additionally , which Ethernet module would be recommended (model) ?
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Apr 24, 2012
I know I can bring up a tunnel up-and-up without any layer 3 address, without any ipv4 or ipv6 address (apart from tunnel source/destination of course). And I don't have to use "ip unnumbered <interface>" either. But what good is a tunnel interface with no address? Can you bridge them or something?
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