Cisco Switching/Routing :: Will Vrrp Object Tracking Work On 1721 Router
Feb 20, 2013
I am using a bunch of Cisco 1721 routers for my T1 lines. We recently purchased Digi cell modems as a backup for the T1. On configuring vrrp to work on both devices I discovered that IOS 12.3(6c) does not support the "vrrp track" feature. After reviewing the Cisco Feature Navigator I could not see an IOS that will support the vrrp object tracking. Is that correct? The routers have T1 WIC's installed. If it does work what is the latest IOS that will work on this end of life product?
I am working on a backup system for my WAN. Verizon quoted the HWIC-3G-CDMA-V to work with my Cisco 1721 router. I have a bunch on these routers on a shelf and thought I would use them for the 3G network. Looking at the Cisco web site it does not list the 1721 as being able to work with this HWIC. I thought it might not be listed as the 1700 series are End of life. Whether it will work?
I was configuring route tracking at a client with several sites to route across GRE tunnels and being able to detect a failure of the main site. To my surprise when configuring a 2800 series router (after sucessfully configuring a 1800 series on the same infrastructure), a 2821 with IOS 12.4(24)T2 IPbase, the commands for ip sla object tracking don't show up.The feature navigator says the router supports this, but it just won't take the commands (also tried older versions of the commands such as "ip sla monitor.." and "rtr .." to no avail).
I started to set up a 1721 router with WIC-4ESW. This is on an internal network, so only looking to just do routing from FA/0's interface to the networks attached to ports on the WIC. I first assigned just VLANs to 2 of the ports and this did not work. So I did some reading up and decided to use bridge groups. Except I still can not access the interfaces on the WIC. And by that I mean on the router itself I can not ping the ip assigned to the BVI.
I have another 1721 w/4 port that long ago I seem to remember simply assigning VLANs to the interfaces and I was able to communicate between the networks without issue (or maybe I just don't rememer that well). Thing is I should be able to at least ping the internal interfaces shouldn't I (assuming the status is up). I don't know why BVI2 and 3 are listed as down, nor do I seem to know how to bring these up.
This is what ip int br gives me: 1721#sh ip int br Interface IP-Address OK? Method Status Protocol BVI2 192.168.101.1 YES manual down down [Code]....
I'd like to use IP SLAs and object tracking to define static routes for specific source/destination traffic across some WAN links we have. I've done this in IOS and it's worked fantastically, but I've not found where/how to do this on the Nexus 7010 platform (or any Nexus platform) as of yet. I could have sworn that this was going to be introduced in the 6.x code? Below is an example of how we do this in the IOS world:
track 11 ip sla 1 reachability delay down 15 up 15 ip sla 1
[Code]....
Esentially this gives us the option of using a "failover" default route. I've attached a basic diagram to explain what we are trying to do with IP SLAs and object checking. The tracking should be configured against an SLA that uses icmp and the static routes should be configured against the tracking.
I am facing an isssues with 7609 for LAN switching , based on LAN (VRRP/HSRP) feature.Actually we are having ES+ cards (on 7609) and we are using multiple groups(say 350 vrrp groups) running on the router . the routers are connected as router 1>>> mux(which is working as switches)>>> router2
my questing are
1. does their will be "multicast packets" (for VRRP/HSRP group) "from backup router to Master router", when in stable state( ie when Master and backup are already chosen) , or the packet from backup to master should be unicast.I know for sure, the packet from master to back is multicast packets denstination to Multicast IP packet and To MAC address.I am not sure but I think from backup to master it should be multicast
2. what is frequency of these packets( from backup to master)
3. As i have multiper group on a single interface ( we are using q-in-q), when the connectivity from router's is broken, then does all the groups will muticast their active roll in the lan sengment "at once" or it will be in a groups say 100 groups at once, and after few ms few 100's and sone ( as is on OSPF or RIP)
we are in between troubleshooting I hope we get the ans( Actul problem we are seeing in the router's that we have 2 ports on active routers and 2 ports on standby router , but we are not seeing muticast on 1 port on standby router where as all other 3 ports are seeing multicast packets) [code]
I have found the HSRP configuration example in Cisco Metro Ethernet Switch ME-3600x/ME-3800x but unable to find the VRRP configuration exmaple in Configuration guide as well in Command Reference Guide.
I am using the IOS version ME-3600: S360XVK9T-12252EY and ME-3400: S340XBT-12253SE
command reference guide: [URL]
configuration guide: [URL]
Kindly confirm either these switches support vrrp commands or not? If yes, kindly share configuration example.
enable dot1q encapsulation on two ethernet ports on a 1721 router. I am able to configure it on the built in fastethernet port, but not on any interface provided by a WIC-1ENET or a WIC-4ESW. I have an application that requires two physical ethernet ports that support dot1q encapsulation.
I would like to know can we configure vlans with cisco 1721 Modular Router? Is it Possible to configure lan environment with the vlans configured in 1721 router without a managed switch?
Our ISP hands us an ethernet link. ISP router has one address of (for argument sake) 1.1.1.0/30 net, - let's say they have 1.1.1.1 we have the other usable address of 1.1.1.2/30 assigned to our 3825 router. Is it possible to use hsrp or vrrp if there is not two valid/unique "wan" IPs to assign to our routers? For example, if we had a pair of 3825 routers? are we stuck with basically a manual failover or requesting our isp to provide a larger address wan block?
router 1721 with one wic-1adsl ,i have adsl conection with irb static ip. the router connect with mannaged switch through a trunk port. the switch has 2 vlans one for the static IPs and the other for private lan. i need the private lan to be able to go to internet. vlan2 can go to internet because it has the same subnet with provider but vlan 1 canot go internet, so how i can make all vlans go internet(the router has only 1 fastethernet port)
I have a 1721 router installed with both an adsl wic and a 4 port switch wic card. My setup is as follows:
pc connected to port 3 (mode access on vlan 20) on the 4 port switch wic (installed in 1721 router)port 4 is configured as trunk (encap dot1q) and connected to fasethernet 0 (inbuild of 1721)fastethernet 0 configured with no ip address?
created sub-interface fastethernet 0.20 with encapsulation dot1q on vlan 20?ip address of sub interface 0.20 is 192.168.20.240?pc nic ip address is 192.168.20.245 however cannot ping 20.240?I want to use only this router with its switch wic for vlans and internet?
I have set up a couple of vlans on a cisco 1721 router 4esw card using the vlan database and assigning an ip address of 192.168.1.x and 192.168.2.x for each vlan interface.Strangely enough connected computers can talk to the other vlan and I have not set any subinterfaces on the etherner0 (layer 3) and not even connected a cable.Is there any reason why this should happen since they should not talk to eachother being on seperate vlans.Doing a tracert shows that first the vlan ip address is hit and then straight to the target pc in the other vlan?
In cisco router 2911 how to creat a network object with port permission on ACL. herz what i have done but couldnt succeed in port 22 and 24 should be denied and rest all port services are allowed to outside interface. [code]
I can ping [URL], from the router but not from a client attached to the router dhcp interface(10.1.3.1). When I turn on ip routing I cannot ping at all. Here is the config I have now that can ping the internet from the router.
sh runBuilding configuration... Current configuration : 1191 bytes!! No configuration change since last restart!version 12.3no service timestamps debug uptimeservice timestamps log datetime msecno service password-encryption!hostname
I have a Cisco 1721 router with an ADSL wic. I have followed guides on the Cisco website so that I can connect the router to my home adsl connection. The router connects to my broadband provider and sucesfully obtains an IP address along with Dynamically assigned DNS servers. I am able to ping google.co.uk from the router but not from clients attached via DHCP.
I have noticed that if I ping the IP address of google.co.uk from a client it resolves but it will not resolve the name. This would lead me to believe that the problem lies with DNS resolution/forwarding but I do not know how to investigate further.
I have started to use ip extended access-lists on several 3750X-switches to filter inbound and outbond traffic on the VLANs. But it seems that the use of object-groups is not supported, is this correct? Is it really no way to group different ip-addresses into groups and then use these groups in the access-lists?
I have two layer 3 switches C3560 and C3750 Cisco switches with ios version "ipservices-mz.122-35.SE5".Now with the current ios version, these layer 3 switches are not supporting object group.so my question is , do i need to upgrade the ios, for this feature, if yes, which version ?
I have already ordered a Cisco ISR 1921/K9. but as i read on Cisco website, it is written that Cisco 1921/K9 only support (IP SLA Responder) feature.
I don't know actually what is sla- responder. but our requirement is we will connect that Router 1921/K9 into 2-ISP links and i want to enable IP- SLA probes on that router so that it can track both the routes into those isp links. so my question is does CISCO 1921/K9 have the support for what i need ?How about Cisco 1921-SEC/K9 ?
I just tested IP SLA with tracking on a 3750 12.2(46)SE. And the configuration was simple enough and tested fine for redundant static routing: [code] Then I tried to do the same on a 3560 switch running 12.2(55)SE3. ip sla went in fine. But when I went to put in the track I was presented with "list boolean and" (for example) after the track and the identifier.I tossed in the ip sla "10" as the object. But shopw track shows the boolean AND as down. I don't get why the track feature is different in two switches so close in IOS version. How do I get the 3560 to track the ip sla as my 3750 does?
I want to use 4506 to track link 1 so that if it fail the traffic will use link 2 to go to ASA firewall. Switch_1 and Switch_2 is configured to use VRRP where Switch_1 is the primary.Current configuration (which im not sure about it):Switch_1track 1 interface gigabitethernet2/3 line protocol.
Does the ASA treat an object-group with a network-object containing a range of IP addresses as a netmask? For example, I can apply this configuration without the ASA throwing any errors though the configuration calls for a 'net mask':
object-group network test network-object 192.168.0.0 192.168.63.255 ? network-object-group mode commands/options: A.B.C.D Enter an IPv4 network mask sh run ob id test object-group network test network-object 192.168.0.0 192.168.63.255
I found that in the documentation it requires a netmask as oppose to a range. Is this a bug in the code? I am running code version 8.0(5)23 on a 5520. If this is not a bug how does the ASA treat this type of configuration when applied to an access list? When I ran a quick packet trace and denied access from that range it looks like the ASA doesn't read that configuration properly.
My company just assumed management of a remote entity. The network has several misconfigurations and I need to make some network modifications from my office w/o losing access or incurring lengthy outage to the clients. The network consists of 1721 router and three 2960 switches.
- I only have access to the router from the Internet. I telnet off the router to the 3 switches.
The site uses a single class C 192.168.1.0 / 24. The router is running RIPv2 even though this is the only network. The prior network person (contractor) set up separate native vlans on each switch and all the ports are defined as Native trunk and access are defined to the VLAN interface assigned to the switch. So of course the logs are flooded with Native VLAN mismatch, Each 2960 switch is a VTP server but has no VTP domain.
basic network layout:
Internet => Eth [Cisco 1721] => Fa 0 192.168.1.254 ==> [SW1] [SW1] interface Vlan1 no ip address no ip route-cache!interface Vlan220ip address 192.168.1.219 255.255.255.0no ip route-cache
[code]....
!interface GigabitEthernet0/1description SW2 Gi0/1switchport access vlan 204switchport trunk native vlan 204!interface GigabitEthernet0/2switchport access vlan 204switchport trunk native vlan 204!interface Vlan1no ip addressno ip route-cache!interface Vlan204ip address 192.168.1.224 255.255.255.0no ip route-cache Normally, I would assign the current 192.168.1.254 to a subinterface to Router Fe 0/0 but with each switch having its own native VLAN I am afraid I will lose connectivity to the downstream switches -- my only access is telnet off the Cisco1721 Router.
I am trying to implement static route tracking on a Catalyst 3560G ( WS-C3560G-48PS, IOS version 12.2(35)SE5 and SW image C3560-IPBASE-M). The configuration is as follows:
track 101 rtr 1 reachability ! rtr 1 type echo protocol ipIcmpEcho 10.199.101.2 rtr schedule 1 life forever start-time now ! IP address 10.199.101.2 is reachable via ICMP (its the next-hop router).
The static routes configured are the following:
ip route 0.0.0.0 0.0.0.0 10.199.101.2 track 101 ip route 0.0.0.0 0.0.0.0 10.200.52.1 20
But only the secondary route(ip route 0.0.0.0 0.0.0.0 10.200.52.1 20) its being installed on the routing table by the switch.
We just deployed some Catalyst 3750X-48PF-L switches. I noticed that the user tracking report doesn't work normally.The switches have C3KX-10Gb NM modules, and all access port are 1 Gbit. But in the User Tracking report, I see devices found on Fa0/43 for example (this is because the previous switch was a Catalyst 2960. I deleted the old switch and add the new 3750X, so this could not be the cause of the problem).I installed all the patches that are available for LMS 4.0.1.
whether a Cisco Router 2911 would work on images other than universal image. This is the question raised by one of our customer. He has 2811 Router where-in he has configured T1/E1 configuration, terminated to Zyxel Modem and working fine. Now he wants to replace this 2811 router with 2911 router. Since the universal image in 2911 router is not working with the present configuration in 2811 router, he wants to know, what options are there for him to configure this in 2911.
Second laptop attached to cisco 10mb port with an IP address of 10.18.158.200 and the cisco interface 10.18.158.254.Okay, here is what is happening and I cannot work it out.If I ping, from Laptop 1 to the cisco subinterface on 192.168.94.253 it is succesful. If I ping from the 1721 to Laptop 1 it is successful. I see the VPN come up and the rulebase on the junipers show the traffic flowing across (ICMP).If I ping, from the 10.18.158.254 interface via telnet on the 1721, I can ping all the way through to 192.168.194.254, which is the gateway for Laptop 1.
I have recently split the voice vlan (10) from the data network (1), and am wondering why my catalysts and router do not require an interface Vlan10 statement. In the past I used OpenBSD boxes to do the routing, and I first needed to configure vlan 10 on the interface before I could get inter-vlan communication to work. With these Cisco devices it works, and I am wondering if it is because of VTP, for the fact that the ports maybe just pass all traffic, or is there some other explanation? Below is the setup, and firmware is up-to-date on all of the devices.
When I plug a phone into the POE SGE, the phone turns on, obtains an address on the proper subnet, and conversations are clear (whereas without the ip nat inside on the new subnet the calls had a lot of static). Possibly the reason that it works is because the phones properly create the tcp/ip packet, and it hops over the trunks and creates the states so that traffic routes back properly. I will install wireshark to see exactly what is going on, but is there a simple explanation that I am overlooking?
