Cisco Firewall :: 7206 - Multiple Default Routes On PIX / ASA?
Jun 23, 2011
We have 2 separate ISP connections with 2 separate routers, during a recent router outage we found that our PIX firewall was not routing to the second default route that I have in the pix configuration. Doing some searches on CCO, I have seen some documents that say that the PIX only supports one default gateway/route. Is this still true, even in version 8 of the PIX software? Is this still true in the newer ASA's? Or will they support multiple default routes?
I'm thinking I'm going to have to setup HSRP on my 7206 Internet routers so the PIX can use one gateway, but wanted to verify before I take the time to set this up.
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Sep 5, 2012
I have a MPLS cloud in our data center. I want one network coming into our core router to have a different default route than the other networks coming in. I'm getting hits on the acl but the route isn't applied and goes to the default route that is configured in the router. I have other PBR for setting local-preferences and as-paths and they are working fine.
The router is a 7206 Version 12.4(11)T3
!
ip route 0.0.0.0 0.0.0.0 1.2.3.4
!
ip access-list extended 2nd_Default_Route
[Code].....
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Apr 29, 2013
I have a pair of N5K's, down stream from them are from Fabric Interconnects and a UCS chassis. Upstream is a stack of 3750's then ASA5510's.
I am trying to backup the config to our TFTP server and I am getting 'no route to host'.. I tried to add a route, and found that N5K uses VRF's for routing?? .. After some looking I see there are two base VRF's 'management' and 'default'.. the management VRF has a default gateway entry and a single interface member (mgmt0).. when I look at the default VRF .. there are no interface members or routing entries.. Ok, I can handle that just add some interfaces and add a default gateway. Then I get lost:
I'm able to access the UCS manager..... so how the heck is that even possible if there's no gateway defined anywhere (or maybe I'm missing something?). My theory was: add all other ports but mgmt0 to the default VRF, and have the default gateway point out of the uplinks (a vPC).. but wasn't sure how that would affect anything and mainly just wanted to know how I was able to access the UCS manager in light of the fact that there is no default gateway anywhere that I could see...
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Nov 18, 2012
Has come across issues with multiple GRE tunnels between two devices when using the same source and destination addresses. I've tried using tunnel keys but this makes no difference. The only way I can get this to work is between different source & destination addresses.
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Oct 15, 2012
6500 - version (s72033_rp-ENTSERVICESK9_WAN-M), Version 12.2(18)SXF17a.I have two ISP's. I have created two defaults as follow & secondary route does not work. [code] After disabling the interface to ISP1, backup routes does not work. [code]
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Mar 26, 2012
I have a internet router 2921 .my isp is providing 100 mbps internet link with static public ip network .I am using a default static route to the isp wan ip .I am planning to upgrade 100 mbps to 114 mbps .Unfortunately my isp doesnt have gig port in their side .So they are ready to provide two 57 mbps line .Isp agreed they will route my public ip networks in both the links .
As a result i have two 54 mbps link with same network with two wan networks .My question is whether two default static route to both wan ip will carry out the load sharing correctly ?
Eg :
172.24.66.0 255.255.255.252 -first link my fa0/1 172.24.66.1
172.24.66.4 255.255.255.252 -second link my fa0/2 172.24.66.5
ip route 0.0.0.0 0.0.0.0 172.24.66.2
ip route 0.0.0.0 0.0.0.0 172.24.66.6
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Feb 13, 2013
I have a 3560 with IP base that is acting as a true EIGRP stub router today. It advertises local routes to the upstream service provider router and receives a default route.
Now I want to connect a 3900 ISR as a voice gateway. The 3560 does not seem to be advertising any routes to the 3900. Ok the EIGRP stub doc says this:
Only specified routes are propagated from the remote (stub) router. The router responds to queries for summaries, connected routes, redistributed static routes, external routes, and internal routes with the message "inaccessible." A router that is configured as a stub will send a special peer information packet to all neighboring routers to report its status as a stub router.
# Any neighbor that receives a packet informing it of the stub status will not query the stub router for any routes, and a router that has a stub peer will not query that peer. The stub router will depend on the distribution router to send the proper updates to all peers.
I guess I don't understand why the stub advertises local routes to the upstream ISP router but does not seem to advertise routes to the 3900. Does the stub identify the ISP router as the distribution router somehow, thus differentiating it from the 3900? If so, how is this done?
show ip eigrp neighbor detail on the 3900:
EIGRP-IPv4 Neighbors for AS(100)
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
[Code].....
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Jan 24, 2011
We have multiple sites that are linked via MPLS (L3) circuits. We have good size circuits for Internet at two main sites (HQ and QC) and smaller sites come to HQ site to go to internet. We are running ospf (Cisco L3 switches) with service provider (ME3400) at these two main sites and service provider then redistributes routes back into MPLS via BGP and then smaller sites ME3400 learn these routes. i am injecting default routes from HQ and QC, but Telco is only redistributing default from HQ. So large pipe Internet at QC is not being used effeciently. Also if MPLS at HQ fails, then we are told, we need to call Telco and they will make change in their network to now start distributing default from QC.it was my understanding that telco can use BGP communities and advertize one default as prefered and second with higher cost, so that failover can occur automatically. And that they can also set up so that west cost sites use HQ and east cost sites can use QC for going to internet, but they say it is not possible.it the least, can I do something like this at my end for failover for internet, in case MPLS at HQ goes down (soon we will be setting up a point to point VPN tunnel between HQ and QC so that MPLS failure at HQ will trigger advertisement of HQ routes over tunnel via QC into MPLS, so other sites can then come to HQ thru QC over this tunnel. At QC Cisco router (to detect loss of default route from HQ and then start advertizing default from QC)
router ospf 1
default-information originate always route-map From_HQ
exit
ip access-list standard From_HQ
[code]....
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Mar 5, 2013
We have a 6509 series of core switches and 3750 series of L2 switches, There is no default gateway or any static routes to any IP.VLAN 1 is made admin down and another vlan is used for all communication here in this environment
Attached is configuration for reference But still I am able to take telnet or SSH. I want to know how telnet or SSH or tacacs authentication happens without any static or default route.
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Apr 2, 2013
I'm a bit perplexed atm with trying to set up multiple failover routes on a 2821 router. Let me say that I have more experieince in a switched network as routing is seldom required where I work atm. Here's my problem. I have a routing table set up as follows but only the primary routes work. The failover routes will not kick in once the primary route is not there.
ip route 10.32.11.0 255.255.255.0 128.32.8.11
ip route 10.32.11.0 255.255.255.0 128.32.24.11 100
ip route 10.32.12.0 255.255.255.0 128.32.8.12
ip route 10.32.12.0 255.255.255.0 128.32.24.12 100
ip route 10.32.14.0 255.255.255.0 128.32.8.14
ip route 10.32.14.0 255.255.255.0 128.32.24.14 100
Ip addresses are not exact but it gets the point across.
Why the failover routes are not failing over? The failover routes work if I remove the primary route from the config.
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Jun 10, 2013
Is there any way to have my Cisco 877W Router alter from using one static route to another static route when another router on the network is reporting destination host unreachable?
Router 1 (192.168.2.253)
Dialer0 -> ppoe to internet
Vlan1 -> local 192.168.2.0/24
Router 2 (192.168.2.254)
Dialer0 -> ppoe to managed VPN (172.16.28.1)
Vlan1 -> local 192.168.2.0/24
Router 2 is connected to another network through a managed VPN and that network also has internet access. I want to be able to have two routes to the internet on Router 2. And when Router 1 internet goes down packets get routed through the VPN instead.
I currently have on Router 2
ip route 0.0.0.0 0.0.0.0 192.168.2.253
ip route 10.0.0.0 255.255.255.0 Dialer0
ip route 0.0.0.0 0.0.0.0 172.16.28.5 250
Which does nothing when Router 1 has its Dialer0 interface shutdown, or goes offline completely.I suspect I could reverse the setup and have everything routed through the VPN by default and then if / when Dialer0 interface goes down it would switch to using Router 2, but if the problem is in the remote network and interface Dialer0 stays up, it would probably do the same thing... nothing.All devices mentioned are Cisco 877W routers with ADSL and a bunch of fast ethernet interfaces.
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Jun 24, 2012
I have a 1941 router configured for Policy based routing with two ISPs.Two static default routes configured to point the gateways of respoective ISPs with same metric.But the problem is, packets are going throug the one ISP only while doing traceroute.
N/W connectivity:
ISP1-----> <----------------------> LAN1
| Router |
ISP-------> <----------------------> LAN 2
Below is my configuration :
Current configuration : 5958 bytes
!
! Last configuration change at 05:18:56 UTC Mon Jun 25 2012
!
version 15.0
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
[code]....
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Apr 8, 2011
Is there a way in EIGRP to prefer external routes versus internal routes. EIGRP always picks up internal routes as long as they are available, no matter if external routes have better metric. Our Scenario is that we have DMVPN hub and spoke topology running EIGRP 101. The Core routers also on EIGRP 101 prefer EIGRP 101 routes. We have the new MPLS network running BGP and redistributing these BGP routes into EIGRP 101. The core routers prefer EIGRP 101 routes (internal) to redistributed BGP (external) routes.
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Apr 4, 2012
I have an outside 7206 router that is configured with BGP. Behind that I have an ASA 5520 with a failover. Everytime my primary ISP goes down I have to failover the ASA to restablish a connection to the secondary ISP. When the primary comes back on line I have to fail it over again. I have had Cisco TAC look at the ASA and they didn't see anything misconfigured on the ASA. Doesn't seem to be any problems with the router config either.
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Oct 6, 2012
I'm sitting around 6-15 feet away from my wireless router, and I keep losing wifi. I end up having to right click on the wifi icon in the bottom right corner and click Troubleshoot Problems. The problem which is found and fixed is "The default gateway is not available." During the troubleshooting, Intel My Wifi Technology gets disabled and then re-enabled, and things usually start to work again.ometimes I have to unplug the router to re-cycle it to fix the problem.When this happens is inconsistent - sometimes when I'm actively working, other times when I return from being away from my machine.[CODE]
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Apr 4, 2013
I have a small network that i want to setup, i have 1 2900 router and i'd like to create subinterfaces for the internal. but more importantly i'd like to have the dsl modems connected to the router with traffic from one subinterface going through one modem and traffic from the other going through the other.
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Feb 23, 2013
I was checking out the config on my ASA and noticed a bunch of static routes configured when I did a show route. With the exception of two that I expect to be there, the remainder point traffic destined for specific internal hosts to the outside interface, i.e.
S private_ip 255.255.255.255 [1/0] via public_ip, outside
I verified that I cannot ping those hosts from the firewall. I logged in to the ASDM. When I check the Configuration>Device Setup>Routing>Static Routes it only shows two static routes, the ones I expect to see. If I look under Monitoring>Routing>Routes, I see the same output as I did on the CLI. I looked around to see if I was missing a key location for this information, and I was able to see the same static routes output in Monitoring>Routing>Routes. Since this is under monitoring though there's no way to delete these routes, and I still don't know where they were configured originally. Then I happened to check under Monitoring>VPN>VPN Statistics>Sessions, and I see several of the private IPs used in the static routes being used by VPN users, including my own! I know I didn't assign myself a static IP for VPN use or anything like that. So, what are these static IP routes? Why do I see them in the CLI and not under the Configuration tab? I mean, I know I can delete them from the CLI but I'm trying to figure out why the info is not synced. Am I seeing dynamically created content based on the VPN connections?
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Mar 30, 2011
We have several pairs of ASA5510s in failover A/P mode, some running 8.3(2) and others running 8.4(1).
e0/0 = outside
e0/1 = inside
m0/0 = management
The problem we're having is we can't get anything to route out of the management interface unless we put in a static route at least to the subnet level. For example, we want syslog traffic to exit out m0/0 to our syslog server 10.71.211.79. Our 'gateway of last resort' points to the next hop out e0/0, and a second static route with a higher metric and a more distinct network space is for m0/0 as in:
route outside 0.0.0.0 0.0.0.0 192.168.49.129 1route management 10.72.0.0 255.255.0.0 10.72.232.94 10
This doesn't work, and ASDM loggin gives this error: ".....Routing failed to locate next hop for udp from NP Identity Ifc:10.72.232.89/514 to management:10.72.211.79/514"
If I put in a more granular subnet route, or a host route of the syslog server it works, such as:
route management 10.72.211.0 255.255.255.0 10.72.232.94 10 <------------- this works
route management 10.72.211.79 255.255.255.255 10.72.232.94 10 <------------- this works too
Why won't a static route for 10.71.0.0 255.255.0.0 work in this case?
We are going to have numerous hosts access and be sent messages though the management interface of these ASAs, and it would be very burdonsome to have to add a host, or even a subnet, route for every one. I've removed all static routes and tried to rely on EIGRP, but that doesn't work. I also had to put 'passive-interface management' under the EIGRP for this to work.
Here is the pertinant ASA config concerning syslog, routing, and interfaces:
interface Ethernet0/0 nameif outside security-level 0 ip address 192.168.49.140 255.255.255.128 standby 192.168.49.141 !interface Ethernet0/1 nameif inside security-level 100 ip address xxx.xxx.xxx.xxx 255.255.255.128 standby
[Code].....
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Feb 5, 2012
I need to create a firewalled segment that not only separates hosts from general population, but also from each other. The solitary confinement of firewalled segments.I know that I could create a bunch of sub-interfaces, one for each host or group that needs to be isolated, but I'd really rather not have to do that if possible. 1) It could become a management nightmare between ACLs and sub-interfaces and 2) it's a waste of IP addresses.s there any way that I can create a bunch of separate VLANs behind the firewall and have them all terminate at the firewall, using a single firewall IP address for the gateway?
VLAN 1 - hosts 1.1.1.5 and 1.1.1.6VLAN 2 - hosts 1.1.1.7
Firewall DMZ Interface - 1.1.1.1VLAN 3 - hosts 1.1.1.8 and 1.1.1.9
This way, the hosts are isolated and can't talk to each other unless they're on the same VLAN.I'm working with an ASA 5510 running 8.2.4(4).
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Nov 14, 2011
Will ASA5510 support default route failover mechanism by giving two different AD value in the route outside command?
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Jul 12, 2011
I have another asa 5520 and it is configured. when i do factory default every thing erase. ok. when i enter again it promped for enable password. and it takes my privious password taht i gave in full configuration.
It generally comes no password . Why enable PW dont erase ? why factory default holds my previous password ?
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May 23, 2012
I'm having issues with NAT dropping ICMP on default NAT. Do I need to create another NAT for ICMP?
Here's the packet-tracer result:
firewall01# packet-tracer input inside icmp 172.23.1.74 0 10 8.8.8.8 detailed
Phase: 1
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
[code]....
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Apr 19, 2011
Q1. I would like to confirm like how many total of contexts do I have by default when I purchase the ASA 5540 ? are they two contexts aside from the admin context or two contexts including the admin context?
Q2. can I configure the default box with High Availability using the default contexts?
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Sep 21, 2011
By default ASA applies DNS packet inspection with a default (maximum) packet size of 512bytes as recommended by RFC 1035, anything above is dropped.
I have a customer that is trying to use larger packet sizes due to extension mechanisms for DNS defined in RFC2671.
My question is , is it safe to increase the default packet size in the DNS inspection thus applied globally for all DNS traffic, or should / can we apply a policy that applies only to this specific customer ?
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May 1, 2011
What is the factory default config on ASA5505 with 8.4.1?
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May 9, 2012
I was under the impression that all Cisco ASA firewalls shipped with a default inspection policy.
Example
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
[Code]......
can I build this myself? Why is it missing (I have two other ASA 5505s here that also do not have it). What would I do to rebuild it?
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Feb 2, 2012
getting step by step procedure to bring an ASA5550 to factory default setting, so that I can configure it from scratch via ASDM
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Jul 3, 2011
Im connecting to my firewall through the console port, and need to know how to reset it to factory defaults. I have looked around online and can not see any reference on how to do this.
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Apr 20, 2011
I am ordering ASA5505-UL-BUN-K9. By default device comes with which IOS version?
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Apr 10, 2011
i have a new 5505 and i have done a few configurations on it. When i try to reset it to the factory settings via asdm i get an error saying it could not be done. I have used config-factory-default using the cli option available in the asdm. I am using asa 8.2 and asdm 6.2. Will erasing the flash reset to factory defaults.
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Aug 15, 2011
CISCO ASA 5505
Interfaces:
OUTSIDE - 194.50.90.221 255.255.255.0 / security level 0
DMZ - 192.168.12.254 255.255.255.0 / security level 25
INSIDE - 192.168.0.6 255.255.255.0 / security level 50
Now, if I want to ping from the DMZ to INSIDE, I get an error message "no translation group found for icmp src DMZ: ...... dst: INSIDE...."
I fixed is by adding "NAT 0" onto the INSIDE interface so that packets originating from "INSIDE" that are destined for "DMZ" do not get NAT'd.
Now my question is, becasue these are all directly connected networks, how come the firewall does not route the packets, but tries to NAT them instead.
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Jan 10, 2011
On FWSM (running version 4.1 in my case) the default global policy uses the following class map:class-map inspection_default match default-inspection-traffic
What "default-inspection-traffic" includes? Is it all traffic? If so, do I really want all my traffic to go through the inspection engine? I would imagine this would have a performance impact on traffic that is not part of the protocols being inspected.
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Sep 15, 2011
RVS4000 has default firewall rule from ANY WAN -> to ANY LAN with status Allowed. Should that be denied by default, like in RV042 or RVL200?
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