BGP multihomed with HSRP

Similar Questions

• Cisco IOS IPSec failover | Route based VPN with HSRP

  I can find the redundancy of vpn IPSec using policy based VPN with HSRP.

  Any document which ensures redundancy of the road-base-vpn with HSRP?

  OK, I now understand the question. Sorry, I have no documents for this task.

  I can see in the crypto ipsec profile that you will use under the Tunnel interface configuration to enable the protection, you can configure the redundancy:

  cisco(config)#crypto ipsec profile VTIcisco(ipsec-profile)#?Crypto Map configuration commands: default Set a command to its defaults description Description of the crypto map statement policy dialer Dialer related commands exit Exit from crypto map configuration mode no Negate a command or set its defaults redundancy Configure HA for this ipsec profile responder-only Do not initiate SAs from this device set Set values for encryption/decryption

  cisco(ipsec-profile)#redundancy ? WORD Redundancy group name

  cisco(ipsec-profile)#redundancy MRT ? stateful enable stateful failover

  I suggest that it is the same as redundancy card crypto. But no documentation or examples found...

• Problems with HSRP output

  Hello dear!

  I have the following topology:

  Cisco 3845 gi0/0 - switch Foundry - fa0/0 Cisco 7206VXR

  CISCO 3845 *.

  interface GigabitEthernet0/0
  IP 192.168.80.90 255.255.255.128
  no ip proxy-arp
  IP accounting output-packets
  full duplex
  Speed 100
  media type rj45
  standby 2 ip 192.168.80.89
  standby priority 2 130
  LAN service-policy input

  CISCO 7206 *.

  interface FastEthernet0/0
  IP 192.168.80.91 255.255.255.128
  no ip proxy-arp
  Summary-address eigrp 100 IP 172.31.255.0 255.255.255.0 5
  full duplex
  Speed 100
  No cdp enable
  standby 2 ip 192.168.80.89
  standby priority 2 150
  2 standby preempt delay minimum 60
  standby 2 track Serial6/0 80
  LAN service-policy input

  This devices run HSRP, but I been out following diagnosis in two routers using 'show Eve '.

  See the day before

  Cisco 3845 *.

  FastEthernet0/0 - group 2
  The State is active
  2 state changes, last state change 5w6d
  Virtual IP address is 192.168.80.89
  Active virtual MAC address is 0000.0c07.ac02
  Local virtual MAC address is 0000.0c07.ac02 (the default value of the v1)
  Hello time 3 sec, hold time 10 sec
  Next Hello sent to 1.488 seconds
  Enabled, preemption delay dry 60 min
  Active router is local
  Standby router is unknown?
  Priority 150 (150 configured)
  Follow the State of Serial6/0 interface Up decrement 80
  The name of IP redundancy is 'hsrp-Fa0/0-2' (default)

  See the day before

  Cisco 7206VXR *.

  GigabitEthernet0/0 - group 2
  The State is Init (interface to the bottom)
  Virtual IP address is 192.168.80.89
  Active virtual MAC address is unknown
  Local virtual MAC address is 0000.0c07.ac02 (the default value of the v1)
  Hello time 3 sec, hold time 10 sec
  Pre-emption turned off
  Active router is unknown?
  Standby router is unknown?
  Priority 130 (130 configured)
  The group name is "hsrp-Gi0/0-2" (default)

  I can ping to both devices using the virtual ip address.
  The work around to solve the lines ' active router is unknown and standby router is unknown "are remove the hsrp configuration in the watch system, after the issue is resolved, but came on after a few days.
  The problem is that I have not access to the Foundry switch but I think that HSRP configuration have no problem, even in the buffer, I did not see any problem with HSRP.

  Someone have similar problem or any idea?

  Thank you more

  Hello

  I would try

  (a) using HSRP worm 2 (see http://www.cisco.com/en/US/docs/ios/ipapp/configuration/guide/ipapp_hsrp_ps6922_TSD_Products_Configuration_Guide_Chapter.html#wp1102891 )

  (b) looks a little stange me have first refusal configured on a router only.

  (c) there could be some problems with your multicasts to send/receive of Foundry switch used by HSRP?

  HTH,

  Milan

• DHCP-discover with HSRP

  Hello

  I have a general question about DHCP and HSRP.

  I configured two redundant CISCO routers with (active) address IP 10.0.0.2 and 10.0.0.3 (standby).

  Their virtual HSRP address is 10.0.0.1.

  When my clients send DHCP package to the DHCP server on the routers, they send a DHCP-discover 10.0.0.2 and 10.0.0.3 discovery but not 10.0.0.1.

  What is the right way or shouldn´t that the package go to the HSRP address?

  Thanks for your help.

  Hello

  DHCP detects are usually broadcast, not targeted on a specific IP address?

  If clients attempt to renew and do not get a response from something they are unicast to, they'll do a DHCP Discover broadcast and get picked up by what on the local subnet that is interested in their service... so it shouldn't matter.

  Aaron

• BGP, OSPF with default route

  Hello

  My branch becomes internet through seat & connected through lease line and ospf is running. a static route id 0.0.0.0 set to HO.

  Now an additional link is added to our extensive network of MPLS link redundancy & EBGP is running.

  My question is how to configure ospf route (my internal network) to bgp & default (for internet) route for connectivity?

  Please help with examples.

  Thank you

  For the internet, you need a default route. I am assuming that you will get by default route of MPLS as well so leased will remain DEFAULT road get MPLS BGp inject into LAN by this command that I already added to your config file.

  router ospf xxx

  default information are created

  !

  Also if you connect line Lased and MPLS on the same router then router chooses MPLS as the main path as favorite eBGP and ospf. If you ave to change AD BGP routes to ospf will get better than BGP. Use in config for leased line primary and secondary MLP.

  router bgp xxx

  BGP distance 200 200 200

  !

• VPN out 2 ISP - no failover Bgp - Multihome -.

  Hello Experts,

  I have read and read a read... so I appreciate all help. I would like to configure VPN dating 2 ISP of as a new HWIC was installed on my 1841.

  BGP is not an option, because the links don't communicate with each other.

  I understand that this can be done with ip sla and objects, but I don't know

  If I need some tweaking with the VPN traffic so that it can failover or it actually work in this config.

  Want your comments because it's on a live environment and I can't test on a lab.

  My requirements are:

  1. I need only 1 host (172.16.4.20) to exit through the second (Antena_NEW_Gateway) interface FA0/1/0 over VPN

  with gateway 192.168.51.1 and switching to the default gateway 'original' (the rest is using network) in which case it fails.

  2-all my other VPN network traffic remains the same output through my original gateway (190.11.1.1)

  The interfaces are as follows:

  interface FastEthernet0/0

  Outside description

  IP dhcp customer_id FastEthernet0/0

  3desmap card crypto

  !

  interface FastEthernet0/1

  Inside description

  IP 172.16.4.60 255.255.255.0

  !

  interface FastEthernet0/1/0

  Description ANTENA_NEW_Gateway

  IP 192.168.51.2 255.255.255.0

  Acts1 card crypto

  political intellectual property map route acts

  Please let me know if I'm missing something. I created a different encryption card for the 2nd interface, I use the same traffic transform-set acl and interesting of before.

  interface FastEthernet0/1/0

  Description ANTENA_NEW_Gateway

  IP 192.168.51.2 255.255.255.0

  Acts1 card crypto

  political intellectual property map route acts

  IP route 0.0.0.0 0.0.0.0 190.11.1.1

  host IP 172.16.4.20 road 192.168.51.1 follow 123

  host IP 172.16.4.20 road 190.11.1.1 254

  ALS IP 1

  ICMP echo - 192.168.51.1

  timeout of 1000

  threshold 2

  frequency 3

  IP SLA annex 1 point of life to always start-time now

  accessibility of rtr 1 track 123

  access-list 101 permit icmp any echo host 192.168.51.1

  route map acts allow 10

  IP match route # 101

  Router # set interface FastEthernet0/1/0 Null 0

  Router # exit

  Also, I am attaching my setup.

  the road map should look like

  Rout-map allowed acts1 10

  corresponds to the ip address 1

  IP 192.168.51.1 jump according to the value

  Rout-map allowed acts1 20

  IP 190.11.1.1 jump according to the value

  access-list 1 permit host 172.16.4.20

  then apply it to the source interface that is your interface FastEthernet0/1 case

  interface FastEthernet0/1

  IP policy route map acts1

  remove the old map of the route of the external interface.

  Good luck

  If useful rates

• How to configure the FWSM with HSRP support

  Hi all

  We have 2 * 6500 Series switches with each FWSM core installed.

  There are some users of VLANs (each floor) and a lot of servers inside that belong to some other VLANs.

  Basic switches have been configured with redundancy HSRP (active/passive).

  Today, I am picky with FWSM routed mode configuration.

  There is no problem with the default configuration and testing,

  I mean assigning VLANS to FWSM and delete addresses IP of MSFC.

  But unfortunately whenever I have such a configuration, do I lose naturally redundancy between switches.

  In our situation HSRP is a must.

  Is it possible to fix this design in routed mode, with support HSRP. ?

  Thank you

  Erdem.

  Hi Erdem,

  (correct me if I'm wrong, Jon) - If you remove all the Lass you must route all traffic of course the FWSM.

  What we did was to create a transfer network (VLAN) with a SVI and FWSM inside external interface. Now, the default gateway on the FWSM is on the IP address of the SVI. So most of the range is configured on the switch.

  Kind regards

  Jürgen

• DMVPN spoke with HSRP sells HUB

  I have a basic DMVPN with an IPSEC config protect profile.

  On the shelves, I use the VIP HSRP for (192.168.1.1) configuration and traffic stops treatment

  map of PNDH 10.29.32.1 IP 192.168.1.1

  If I use the real IP address of the HUB 192.168.1.2 interface, it works fine.

  I changed the mode of multipoint gre tunnel and changed to point to the real or VIP and seems not in line with the VIP HSRP.

  Is this a supported configuration, or am I missing something?

  The end result is routers DMVPN HUB running HSRP and we talked, pointing to the VIP address.

  I feel that, since then, IPSec, the communication breaks when you use the VIP

  Thank you

  Juan

  Spoke about config below

  interface Tunnel100

  Description

  bandwidth 6000

  IP 10.29.47.254 255.255.240.0

  no ip redirection

  IP 1400 MTU

  property intellectual PNDH authentication nhrpdomain

  map of PNDH IP 192.168.1.2 multicast

  map of PNDH 10.29.32.1 IP 192.168.1.2

  PNDH id network IP-100

  property intellectual PNDH holdtime 360

  property intellectual PNDH nhs 10.29.32.1

  IP tcp adjust-mss 1360

  load-interval 30

  QoS before filing

  source of tunnel GigabitEthernet0/2

  multipoint gre tunnel mode

  tunnel key 1000

  Protection ipsec DMVPN tunnel profile

  end

  Hello

  The hub does not generate the packages using the VIP.

  If the RADIUS is trying to connect to 192.168.1.1 while the hub will respond with 192.168.1.2.

  For redundancy, you can create two tunnels on the RADIUS. 1 for every router and use eigrp to decide the best option.

  You can still use hsrp to the internal network on the hubs (the network doesn't not facing rays) so the right router will be the gateway for internal routers.

• Multihomed BGP - which will broadcast directly connected networks?

  I'm labing in place a script on my site of practical Cisco HSRP, BGP GNS3 and perhaps grow later on network practice as well other protocols.

  http://www.Cisco.com/en/us/Tech/tk365/technologies_configuration_example09186a0080093f2c.shtml

  Everything is already configured and the installer, except that I don't have interconnection routes announced to any BGP process on routers, still.

  Interconnection networks as you can see in the photo are:

  192.168.31.0

  192.168.42.0

  192.168.63.0

  192.168.64.0

  

  Obviously I can't source these networks of each router, or use redistribute connected on each router because I would get duplicate routes, so my question is: what routers you use to come from these 4 networks of? I was thinking of using the network control (or maybe even a map of the route) on ISPA for networks 192.168.31.0 and 192.168.63.0 and ISPB for networks 192.168.42.0 and 192.168.64.0.

  What is the appropriate method of world real something like that, or there are several ways to do this correctly?

  Thanks in advance

  Hi Vanjaburic,

  Failure RIB is not a problem. You'll see this output normally where BGP route is not able to settle in to the routing table, as a route to higher value AD is already there in the routing table. Here we have a static route.

  more information on the failure of BGP RIBS

  http://blog.ioshints.info/2007/12/what-is-BGP-rib-failure.html

  • The function of failure on the SIDES was introduced in IOS version 12.2 T; before that, the BGP routes with superior remote than other sources of road administration have been ignored in silent mode (like all other routing protocols).
  • You can view the BGP routes that are not inserted into the table of IP routing with the commandshow ip bgp ribs-failure , which also explains why the road BGP not was not inserted in the IP routing table.
  • BGP which are not used due to the higher administrative distance roads are always announced to all BGP peers (contrary to what most other distance-vector routing protocols do), unless you configure bgp delete-inactive (introducted in 12.0 and 12.2 T (26) S).

  Kind regards

  Assani

• HSRP with Inter-vlan

  Hi I want to cnfigure 2 Distr_1 and Distr_2 with HSRP routers

  Router Distr_1 must be an active router for VLAN 1 and 10 and router Distr_2 must be an active router for VLAN 20 and 30

  im stuck to ask me if I have to configure this on int vlan or on the router?

  Hello!

  * FOR VLAN 1 *.

  interface Vlan1
  R1(Config-if) #ip address 10.1.1.1 255.255.255.0
  R1(Config-if) ip #standby 1 10.1.1.10<  =""  r1="" and="" r2="" must="" have="" this="" same="" ip="">
  R1(Config-if) #standby 1 priority 110<  r1="" has="" higher="" priority="" than="" r2.="" so="" r1="" will="" be=""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  =""  ="">

  interface Vlan1
  R2(Config-if) #ip address 10.1.1.2 255.255.255.0
  R2(Config-if) ip #standby 1 10.1.1.10
  R2(Config-if) #standby 1 priority 100

  * FOR VLAN 10 (IDENTICAL TO THE VLAN 1). *

  interface Vlan10
  R1(Config-if) #ip address 10.1.10.1 255.255.255.0
  R1(Config-if) ip #standby 1 10.1.10.10
  R1(Config-if) #standby 1 priority 110

  interface Vlan10
  R2(Config-if) #ip address 10.1.10.2 255.255.255.0
  R2(Config-if) ip #standby 1 10.1.10.10
  R2(Config-if) #standby 1 priority 100

  * FOR VLAN 20 *.

  interface Vlan20
  R1(Config-if) #ip address 10.1.20.1 255.255.255.0
  R1(Config-if) ip #standby 1 10.1.20.10
  R1(Config-if) #standby 1 priority 100

  interface Vlan20
  R2(Config-if) #ip address 10.1.20.2 255.255.255.0
  R2(Config-if) ip #standby 1 10.1.20.10
  R2(Config-if) #standby 1 priority 110

  * REPEAT VLAN 20 CONFIG FOR VLAN 30 *.

  I hope this can help, greetings!

  JC

• DMVPN with dynamic failover HSRP/IPSEC

  "DMVPN with dynamic failover HSRP/IPSEC."

  Hi all. Is this possible? When you use a direct IPSEC LAN to LAN, you have a card encryption and when you secure the card encryption at the source of the tunnel interface, you configure "' crypto map redundancy with State '."

  The DMVPN does not use encryption card, sound by using an IPSEC profile with protection of tunnel. How you configure stateful with HSRP IPSEC in this situation?

  We're heading for a double cloud dmvpn topology with 2 heads dmvpn geographically separate. I want that every network head to have a redundancy HSRP, which can be done fairly easily. But I also want State IPSEC to be replicated for all security associations IPSEC do not fall in the case of a failover. Is it possible in this scenario and how?

  Thanks a lot as always.

  Hello again ;-)

  There are currently no plan at the moment (that I know) to mix with State redundancy and anythign with protection of tunnel.

  Frankly it is best to create redundancy in DMVPN termination on both turntable and relying on routing protocols - which I am sure you aware of so I won't bore you with details.

  That said, my personal observation is - if you want a failover go to ASA, when you have routers, you have all these wonderful tools like VTI/GRE for IPsec that mix well with routing protocols, and MUCH MUCH more. It is very often to change some timers for routing protocol driven "failover" happen very quickly.

  Marcin

• BGP community send - how does it work?

  Hi guys,.

  I hope that if anyone can help me understand how to send a community attributes work between ISP?

  We have an internet connection to multihomed with two Internet service providers of peering with two local routers (R01 - INT and INT - R02) and we are prefer isps1 on the other. Please attached flowchart along.

  We run iBGP between the local routers (R01 - INT and INT - R02) and R01 has a higher local preference which is looked at with isps1 and R02 has lower local preference which is looked at with ISP2.

  We are a consignment attribute ISP2 community with advertising prefixes they use to manipulate the routing. I have also read on their site with this community attribute, they alter the local preference of roads so that it is less than one received a counterpart road but is not less than a transit provider.

  I understand that they will lower the local on their router preference so that it is not preferred but how IPS2 say other ISPS is not the way through their network if you go to those specific prefixes.

  Really appreciate your help.

  Thanks in advance.

  Jay

  Hello

  In my humble OPINION, they can manipulate BGP attributes again (BY adding or MED, for example) or even to use the special communities agreed with their neighbour ISPS in advertising prefixes to them?

  Best regards

  Milan

• Best practices HSRP

  Hello

  I wonder which of these 2 configurations would be preferable to provide bridges of high availability for the client's Office.

  I have a working configuration right now composed of 2 SRI configured with HSRP as a proof of concept.  The question is what is the best solution to scale for the production.  I have a gigabit link between the customer gateway and my gateway so that their LAN traffic can be routed through my internet connection failure in the service of their in their border router or Internet service provider.

  Option 1. 2 layer 3 switches (cisco 3650)

  Option 2. 2 routers (cisco 2911)

  HSRP.png

  

  I can provide more if necessary context.

  Thanks for your help!

  A 2911 Cisco is not likely to deal with 1 Gbps of load.  Highly unlikely.

  If you need to do NAT, IPSec, or something like that you will need a router.  Probably something SRI 4000 series.

  Otherwise, use the switch Cisco 3650.  It will connect dish a Gbps link without any problem.

• BGP announcement: How do I remove the attributes "next hop" and "metrics" inherited from OSPF?

  Hello

  I use a router THAT WAN Cisco ASR1001 connected via BGP AS65075 with our ISP.

  This router is connected through OSPF with our Cisco 7206VXR/NPE-G2 firewall.

  Topology:

  ISP <- bgp="" -="">RT 1001 <- ospf="" -="">FW 7206 <->LAN

  On the WAN router, static routes are set to null0 to always announce our class C networks.

  Route IP 192.168.10.0 255.255.255.0 Null0 250

  ...

  Network guidelines are placed in our BGP configuration:

  router bgp 65075

  The log-neighbor BGP-changes

  neighbor EBGP-PEER-IPv4-peer group

  EBGP-PEER-IPv4 neighbor fall-over bfd

  neighbour 192.168.88.138 distance - as 65200

  192.168.88.138 a neighbor EBGP peers PEERS-IPv4

  192.168.88.138 ISP IPv4 neighbor description

  next password 192.168.88.138 7 unknown

  !

  ipv4 address family

  ...

  network 192.168.10.0

  ...

  a neighbor EBGP-PEER-IPv4 soft-reconfiguration inbound

  EBGP-PEER-IPv4 neighbor distribute-list prefix-v4 on

  an EBGP-PEER-IPv4 neighbor prefix-maximum 100

  neighbor EBGP-PEER-IPv4-1 filter list out

  neighbor 192.168.88.138 activate

  neighbor 192.168.88.138 filter-list 2

  output-address-family

  A part of these networs are also learned through OSPF. If these routes are present in the routing table:

  RT-01 #sh ro ip 192.168.10.0

  Routing for 192.168.10.0/24 entry

  Known via "ospf 1", distance 110, metric 20, type extern 2, metric 1 forward

  Published by bgp 65075

  Last update to 192.168.0.79 on Port - channel1.28, 7w0d there is

  Routing descriptor blocks:

  * 192.168.0.79, from 192.168.0.71, 7w0d there is, through Port - channel1.28

  See metric: 20, number of share of traffic is 1

  Because these roads are active in the rounting table. Announcing BGP based on his and attributes "next hop" and "metric" are inherited from OSPF:

  RT-01 #sh ip bgp neighbors 192.168.88.138 announced-routes

  ...

  Network Next Hop path metrics LocPrf weight

  ...

  * > 192.168.10.0 192.168.0.79 20 32768 I

  ...

  Is it possible to remove the legacy of OSPF into BGP attributes?

  How to set the "next hop" to the value 0.0.0.0 and "metric" to 0?

  Thank you

  Best regards

  Jérôme

  Hello Berthier,

  NEXT_HOP is a hill & attribute mandatory path including the eBGP value is the IP address of the BGP peer (specified in the neighbor's remote control) where the router learns the prefix. Thus, your peers (eBGP) will still see the IP 192.168.88.138 in your BGP Next Hop as updates. I agree you the output of the command ' sh ip bgp neighbors 192.168.88.138 roads announced "can be confusing, but not worried about it.

  Metric 20 is cause of path must be acquired by OSPF. Copy in default atributte MED BGP metric. So I see that you have only a peer is very important change this value because MED is not transitive, if this value is not propagated by other ACE access your provider. Anyway, if you want to change, you must:

  1. create a list of prefixes with one or more prefixes that you want to "reset" the MED value:

  list of prefixes prefix-to-reset-MED seq 5 permit 192.168.10.0/24

  list of prefixes prefix-to-reset-MED seq 10 permit X.X.X

  2. create a roadmap

  allowed to reset - MED card route 5

  match of prefix-to-reset-MED IP prefix-list

  the metric value 0

  road map provided to zero-MED allowed 10

  !

  The last road map is necessary to ensure that the rest of the prefixes are sent.

  3. apply the road map

  a neighbor EBGP-PEER-IPv4-roadmap given to zero-MED on

  Concerning

• BGP

  Hi all

  We have a customer who has formed the BGP relationship with one of the neighbor ISP. The way they put in place is, they are just nearby and they advertise only their subnet but do not receive all of the ISP.

  They just use static to point to ISP route.

  Can someone please advise, why it is necessary to do so? (No advantage)

  They can't just point to ISP using a static route without having to buy BGP AS? (If say save money)

  Can they just get the ISP routing table?

  I know they are different thing to consider.

  (1) router can handle the load?

  (2) have double links?

  But apart from this no specific advantage? Please advice.

  Thank you

  Hello

  Customer must have session BGP with ISP to announce its internal network and the networks of his client to the outside world. Otherwise to buy ip pool of the psi and PSI would BGP origination and the advertising of this ip pool. Problem is in this case, when the customer changes service provider, it would need to re - allocate ip addresses in its network given by new ISP. It's not easy and it's pain.

  For outbound traffic, if the customer is having a single link upstream to the ISP-1, no point of taking the route table full, instead it may have the default route to push all traffic to ISP - 1. Now this default route will be charged via BGP static route or service provider. Customer must be redistribute static PGI to make it available to the other routers on the network.

  -Pls remember messages useful rate.

  Kind regards
  Assani