Cisco Switching/Routing :: HP C7000 / Nexus 5K - Locking Down HSRP ARP / MAC?

Mar 6, 2013

Had a Sev 1 issue today.  We have a bunch of Nexus 5ks connecting to some HP C7000 Chassis for the use of Virual environments.  Engineers build and tear down servers during the day, however today, an engineer configured a virtual machine accidently with its IP address as the default gateway.  Each pair of nexus switches has one physical SVI per vlan and a HSRP address for the vlan.  Of course this engineer configuring the server IP address as the HSRP address killed the vlan... which lead me onto think... are they are tried and tested techniques to protect this from happening on the switch.  Enforcing the ARP/MAC of the HSRP address and not allowing it to change or any other device to change it?

View 2 Replies


ADVERTISEMENT

Cisco Switching/Routing :: Nexus 5546 HSRP Not Formed

May 17, 2012

I have a paif of nexus 5548 configured VPC using the mgmt interface as heartbeat and 2x10G as peerlink. Peer-gateway is also configure on the vpc domain. I have 2 FEX straight thru connection to each Nexus'es. Created 2 VPC and both are up and no suspended vlans. Allowed VLANs in peerlink is 10,20,30,40 and 50. I configure SVI for VLAN 10 on both nexus 10.10.10.100/24 and 10.10.10.101/24 respectively. The problem is when I create HSRP on this VLAN 10 (vip 10.10.10.88), the hello packets are not heard by both nexus, thus both Nexus are acting as active with unknown standby. I can ping both vlan 10 from each Nexus. I tried deleting and putting back the config but no luck.I tried creating another SVI vlan 20 on both nexus and form hsrp, result is same as in vlan 10. I am running version 5.1 release on both nexus.

View 3 Replies View Related

Cisco Switching/Routing :: Vrf With Hsrp In Nexus 7010 Version 6.0

Nov 24, 2012

i have a big problem because i configure a vlans with vrf and HSRP but, when i do "show hsrp brief", dont show this interfaces and, i can ping virtual IP. it seems hsrp dont work.

SWSERVSCAMILO_N7010_A#
 interface Vlan405
  description smsc-fwatlas1
  no shutdown
[Code] ....

View 1 Replies View Related

Cisco Switching/Routing :: ERSPAN On Nexus 5596 HSRP Pair

Jul 6, 2012

We have HSRP between NexusA and NexusB with access layer switches connecting to the core using VPC, We are trying to setup a VAM  server Voice recording for Siemens phones. We need to span all voice vlan and point it to the VAM server the VAM server connects to a 3750 Stack considering the amount of traffic multiple span session can generate I plan to move the server to the Nexus directly and run a Local Span Session.

1- As we have two Nexus running HSRP and VAM server only connects physically to one NexusA (I can run local span on that nexusA)  the Second NexusB is not directly connected to the VAM server I plan to run ERSPAN so if this is the best design and which path will the span traffic take from Nexus B to NexusA will it go through the access layer switches depending on the vlans allowed on the uplinks or will it go through the 20 Gig uplink between the two Nexus allowing all vlans (VPN peer links) ? WE have approximately 10 voice vlans, Do we an example config for ERSPAN session where the source are vlans (As I am for fimilliar with RSPAN) ?

View 3 Replies View Related

Cisco Switching/Routing :: Nexus 5k Peer-gateway In VPC Config With HSRP

Apr 18, 2012

we are planing to run HSRP on our Nexus 5ks (with L3 card) and we use VPC to connect the downstream UCS - Fabric Interconnects to the 5ks. I was wondering if the peer-gateway command is required under the vpc domain config? When you use HSRP with VPC, both the active and standby HSRP peers can forward layer3 traffic, isn`t that the same that peer-gateway would achieve?

View 1 Replies View Related

Cisco Switching/Routing :: Nexus 7000 - HSRP Active / Standby?

Dec 16, 2011

I am working on two Nexus 7010 with 5.1.5 NX-OS version. I configure HSRP traditionnaly, Nexus 1 with a priority of 200 and Nexus 2 with a priority of 100 for all vlan.

When I change the priority of a vlan to 200 to 50 for example, Nexus 2 become active and Nexus 1 standby. The problem is that when I do a traceroute from a PC the packet take the Nexus 1 as defaut gateway all the time.....

For information I have a peer link between the 2 Nexus for vPC.

View 9 Replies View Related

Cisco Switching/Routing :: Nexus 5k Running Hsrp Cannot Ping Between All Vlans

Feb 26, 2012

I am at a client that I upgrade from running a single 4507 to two Nexus 5548UP switches with two Nexus 2224 fex's connected.  The other access layer switches are 2960S switches.  I implemented hsrp on the nexus 5k's for redudancy.  The issue they are having is that some networks cannot communicate with each other.  All user vlans can communicate with the server vlan, but it is not running hsrp on the vlan interface (there is a reason for that, but it not relavent for this issue).  The phone vlan, which is running hsrp, can communicate with all networks.
 
When I am connected to either 5k, they can communicate with all devices on all networks.  However, I am on vlan 10, which is a user vlan.  I can communicate fine with the server vlan (vlan 101 - not running hsrp) and the phone vlan (vlan 60 - running hsrp).  I cannot communicate with vlan 30 or 40, which are both running hsrp.  This makes absolutely no sense at all to me.  I checked out trunk ports to be sure that vlans are allowed across the networks as well.  There are no firewalls between the vlans or ACL's.

View 1 Replies View Related

Cisco Switching/Routing :: Nexus 5000 IP Reachability Across VPC Within 4 Member HSRP Group

Nov 17, 2011

I have 2 pairs of Nexus 5000 units (pair 1 and pair 2).  A pair consists of 2 Nexus 5000 (A and B) connected to each other via a VPC containing 2 ports ie P1-5KA -- P1-5KB (vpc domain 6) and P2-5KA -- P2-5KB (vpc domain 10) [code] Hsrp exists between all four with a virtual address of 10.18.136.1.  P1-5KA is the Active with P1-5KB as Standby.
 
I can ping between the four using their SVI addresses.  I am unable to ping the HSRP virtual address .1 from P2-5KA or P2-5KB.I can ping ok only if I shut the VPC between P2-5KA or P2-5KB or define another mac address under the HSRP config other than the system default.  IP Packet debugs show that ping sourced from P2-5KB to P1-5KA loop between P2-5KA -- P2-5KB.  Pings sourced from P2-5KA to P1-5KA are transmitted but none of the 4 device debugs show a receive. both peer-gateway and delay restore 120 have been configured under all vpc domains and all units rebooted.

View 8 Replies View Related

Cisco Switching/Routing :: Possibility For Nexus 7000 To Be HSRP Active Standby In Data

Nov 20, 2012

Normally when we do HSRP with vPC on N7K the device will be Active/Standby in control plane but it will be Active/Active in data plane. In this case any traffic reach to standby device it can forward traffic directly to uplink which is not my desire. My goal is all traffic should pass through active (control plane) device in every case unless active device totally dead. So Is it possible for Nexus 7000 to be HSRP Active/Standby in Data Plane ?

View 4 Replies View Related

Cisco Switching/Routing :: 7609 For Switching / Based On LAN (VRRP / HSRP) Feature

Oct 18, 2011

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]

View 5 Replies View Related

Cisco Switching/Routing :: Packet Discard On Nexus 5020 Link To Nexus 5K

Feb 23, 2011

We are facing issue of continous packet discards On nexus4001L link (int po2) to Nexus5020 switch. Nexus4001L is installed in IBM blade center server and we have FCOE enabled in this setup. [code]

View 2 Replies View Related

Cisco Switching/Routing :: Nexus 7000 With Fabric Extenders Nexus 2000?

Mar 15, 2013

I have been tasked to replace the existing Cat 6500 and 3750 switches by Nexus 7000 and Nexus 2000.I was told initially my boss plans to get 2 x Nexus 7000 and then eventually blow up to 4 x Nexus 7000s.For Nexus, is there a list of tasks / points that i need to consider for building the initial design?
 
Can i just link the Nexus 7000 like the following?
 
N7k-A    =========   N7k-B
|                                   |           
lots of N2ks               lots of N2ks

View 12 Replies View Related

Cisco Switching/Routing :: Nexus FEX Transceivers SNMP MIB Nexus 5000

Dec 22, 2011

Struggle to find the SNMP MIBS of the Nexus 5000 FEX tranceivers.

View 3 Replies View Related

Cisco Switching/Routing :: 2951 - HSRP Backup Taking Two Minutes When Switching Off Primary Router

Oct 7, 2012

I configure HSRP on Router 2951 as a primary router, and Router 2811 as backup router. But when I am switching off my Primary router the backup router is  taking 2 mins to take over form primary router. 
 
 [code]....

View 4 Replies View Related

Cisco Switching/Routing :: 3560E - HSRP Gateway Failover And Routing Table

Nov 12, 2012

We have two Cisco 3560E layer 3 switches at the core of our network. The switches are configured as an HSRP pair and the clients on our network point to the HSRP address as their default gateway. So if CORE-A dies, then CORE-B will pick up the address and the default route for the clients will continue to be available.We also need to specify a few static routes on the core switch to allow us to get to specific networks. Is there a way to do this so that the routes failover in the same way that the default gateway does?

View 2 Replies View Related

Cisco Switching/Routing :: Datacenter Design With 2 Nexus 5K And 4 Nexus 2K?

Nov 13, 2012

we are planning a Nexus datacenter project with this layout:Our experiences with Nexus switches are not so large until now and the manuals are very extensive.Both N5K´s should be connected directly with all 4 N2K switches. I did not find a layout like this in the manuals. Only a design,where only 2 N2K are connected to one N5K, with this fex config:Now I´m not sure if it is right to make a config like this with the same slots and fex´s or with different slots and fex´s.

View 1 Replies View Related

Cisco Switching/Routing :: HSRP Between Three 6509 Switches?

Jan 8, 2012

I want to setup HSRP between three 6509 switches with a single virtual ip for all the three switches.
 
know if its possible and share any site or config.

View 1 Replies View Related

Cisco Switching/Routing :: IPv6 HSRP Implementation On IOS-XR 4.2.1

Nov 11, 2012

I'm looking to try and implement ipv6 HSRP on a series of IOS-XR Routers running 4.2.1 following on from successfully setting up IPv6 HSRP on a few cat6509s on VLAN Interfaces in other parts of the network. I have entered the "router hsrp" configuration menu and gone into the interface in question that I'm looking to setup with IPv6 HSRP. Unfortunately, there version 2 or address-family ipv6 commands are not available.

View 2 Replies View Related

Cisco Switching/Routing :: 6500 - HSRP Design And VSS

Apr 17, 2012

is it possible to run hsrp on two routers (not l3 switch) connected to a l2 switch ? if so does the two routers need a back to back connection ?
 
i know if use two l3 switches (instead of routers) and connect to a LAN switch then we need a back to back connection between the L3 switches
 
also can we use hsrp on vss on 6500?
 
design
 
 
1800 router                                       1800 ROuter
     |                                                        |
     |                                                        |
     |---------- L2 switch-------------------------------|
 
if the above design is acceptable how does the routers know which one is active and which one is standby ? if we need a direct connection between two routers they have to be on a seperate subnet and routers dont allow broadcasts - so how will hsrp work on routers ?
 
L3 switch --------------------------l3 switch
   |                                            |
   |                                            |
   |---------------L2 switch---------------|

View 8 Replies View Related

Cisco Switching/Routing :: 4900 HSRP For LAN Fail-over

Jan 23, 2012

Planning to implement HSRP in layer 3 switch.

We have two numbers of Cisco 4900 ME Switches. Basically want LAN failover from these devices. There are about 400 users in our network. I have attached rough network topology for your reference(I am not good at Microsoft Visio). Need to know implementation of the HSRP in these switches. Two distribution switches(Cisco 4900 ME Switches) are connected to 4 Access switches and these are connected to the LAN.

View 2 Replies View Related

Cisco Switching/Routing :: HSRP Flapping On 7604?

Jul 9, 2012

i have 2 cisco 7604 distrubution routers .Both routers are running 310 hsrp groups.
 
Sundenly there is hsrp flapping which causes high CPU.
 
What is the limitation of HSRP group on cisco 7604 router .Below is the show ver from the router
 
----------------- show version ------------------
Cisco IOS Software, c7600rsp72043_rp Software (c7600rsp72043_rp-ADVIPSERVICES-M), Version 12.2(33)SRC2, RELEASE SOFTWARE (fc2)

[Code]......

View 2 Replies View Related

Cisco Switching/Routing :: 3560x / HSRP On LAN And WAN Interface?

May 9, 2012

I currently use L3 switches as edge routers to my WAN. I want to use a pair of 3560x switches with IPbase to provide a failover path to my WAN using HSRP at one location but had some problems testing the configuration. My plan is use a virtual address on the LAN interface (VLANx which port gi0/1 accesses) and the WAN interface (VLANy which port gi0/24 accesses). I want switch 1 to be primary since it will have an IPS attached to it, and switch 2 will be backup and used only when switch 1 or the IPS requires maintenance. On both the LAN and WAN sides there is no advanced routing going on, the various hosts just depend on the availability of their respective default gateways, so HSRP should be sufficient to provide a failover in either direction.
 
In my testing I got 1 or the other link to fail over but not the entire switch. What should my config look like to achieve failover of the entire switch in the event 1 or the other interface goes down, and fail back when the primary links are again available?

View 7 Replies View Related

Cisco Switching/Routing :: 3945 - License To Run HSRP?

May 20, 2013

if the Cisco 3945 router requires any license for it to run HSRP. Also advise which IOS runs HSRP on the 3845 router. 

View 3 Replies View Related

Cisco Switching/Routing :: 6500 - HSRP Is Instable

Apr 14, 2013

n our datacenter we've implemented HSRP on 2 6500's for redundancy purposes. Both switches are connected via a trunk. When an interface is administratively brought up, HSRP becomes instable. Below some selective logging: 
 
12:58:01.759 CET: %HSRP-5-STATECHANGE: Vlan32 Grp 32 state Standby -> Active12:58:01.919 CET: %HSRP-5-STATECHANGE: Vlan21 Grp 21 state Standby -> Active12:58:02.031 CET: %HSRP-5-STATECHANGE: Vlan42 Grp 42 state Standby -> Active12:58:02.031 CET: %HSRP-5-STATECHANGE: Vlan18 Grp 18 state Standby -> Active12:58:02.223 CET: %HSRP-5-STATECHANGE: Vlan4 Grp 4 state Standby -> Active

Basically what happens, is that both switches becomes active and thus are forwarding traffic. After a few seconds all is back to normal. It seems they are missing each others "hello messages", so the state change is in this case normal outcome. What I can't figure out', is the root cause. Since it is triggered by bringing up an random interface configured as a dot1q trunk, I'm thinking of STP limits. But the limitations I found are 10.000 active STP logical ports and 1800 virtual ports per slot. In my case this is 2591 logical ports and all the virtual ports per slot are below 1800. This suggest the switch is capable of running this set-up without a problem.
 
Some extra information:-Sup 720 10GE-Version 12.2(33)SXH2a-No Vss used-No drops on trunked interfaces between the 2 core switches-83 standby groups (max256)
-R-PVST

View 5 Replies View Related

Cisco Switching/Routing :: 3850 - Way To Configure HSRP

Mar 3, 2013

I just started a evaluation license for IP Base on my 3850 switches. But i can't configure HSRP cause the commands are not there (I rebooted allready). Do you need enterprise for HSRP on the 3850?

View 7 Replies View Related

Cisco WAN :: Nexus 7010 - Advertise Default Route Based On HSRP State

Sep 24, 2012

I've got two Nexus 7010's running HSRP north bound to a pair of ASA's, and BGP south bound to four 6509's. Is it possible to advertise default route to BGP neighbor (or prefer it via MED), only if the node is HSRP-active?

Essentially the goal is to create symmetry for inbound/outbound traffic. Only way I can think of so far is via an EEM script, so that when it sees  HSRP go active via syslog, it would kick off an action to remove ASN prepend,  or reduce MED, and the opposite if HSRP goes standby.

View 2 Replies View Related

Cisco Switching/Routing :: 3850 Cannot Configure HSRP Cause The Commands Are Not There

Jun 7, 2012

I just started a evaluation license for IP Base on my 3850 switches. But i can't configure HSRP cause the commands are not there (I rebooted allready). Do you need enterprise for HSRP on the 3850?

View 2 Replies View Related

Cisco Switching/Routing :: HSRP On Secondary IP Address - 2900

Feb 21, 2013

I have a few old 2600 routers (2621, different IOS's) which I'm now replacing for new one's from the 2900 series (2901, Version 15.1(4)M4).In my configuration I have two IP addresses in my LAN interface and I have HSRP configured within the secondary IP subnet range. It would be something like this:
 
interface GigabitEthernet0/1
ip address 172.x.x.x x.x.x.x secondary
ip address 10.z.z.z z.z.z.z

[Code].....
 
Now, in the new 2900 routers, my interface configuration hasn't changed however I can see that the hello packets are now sent with the source within the respective HSRP IP subnet so I had to edit my acl for that:
 
permit udp 172.x.x.x x.x.x.x host 224.0.0.2 eq 1985
 
Is there a way I can force the HSRP to work as it previously did in the old IOS's?

View 3 Replies View Related

Cisco Switching/Routing :: Configure 2951 And 2921 In HSRP?

May 28, 2012

Is it possible to configure a Cisco2951 and a Cisco2921 in HSRP?

View 1 Replies View Related

Cisco Switching/Routing :: VLAN 600 And 700 / HSRP Filling Up Logs?

May 3, 2012

It looks like both my HSRP Interfaces (VLAN 600 & 700) cycle through standby --> active ---> speak continuously on one of the two switches.  What can be causing this?
  
*May  4 06:41:24.883: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Speak -> Standby
*May  4 06:41:33.671: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Standby -> Active
*May  4 06:41:33.671: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Active -> Speak
*May  4 06:41:34.251: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Speak -> Standby
*May  4 06:41:47.691: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Standby -> Active
*May  4 06:41:47.703: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Active -> Speak

View 1 Replies View Related

Cisco Switching/Routing :: C2911 - HSRP With Enterasys Matrix E1?

Feb 5, 2013

Two C2911 routers are connected to LAN and have HSRP configured. HSRP is negotiating successfully (active/standby), but LAN switch Enterasys Matrix E1 has problems accessing the virtual HSRP address. The switch can ping HSRP IP, and  the virtual HSRP MAC is visible in its MAC table. But the static routes configured on the switch towards the HSRP IP seem to refuse working. Workaround to enable users to access network was to direct the static routes to the physical IP of one router. Is there a known incompatibility between Enterasys with Cisco HSRP?
 
C2911 configuration: Code...

View 7 Replies View Related

Cisco Switching/Routing :: 2911 HSRP With Enterasys Matrix E1

Nov 27, 2012

Two c2911 routers are connected to LAN and have HSRP configured. HSRP is negotiating successfully (active/standby), but LAN switch Enterasys Matrix E1 has problems accessing the virtual HSRP address. The switch can ping HSRP IP, and  the virtual HSRP MAC is visible in its MAC table. But the static routes configured on the switch towards the HSRP IP seem to refuse working. Workaround to enable users to access network was to direct the static routes to the physical IP of one router. Is there a known incompatibility between Enterasys with Cisco HSRP?

View 1 Replies View Related

Cisco Switching/Routing :: 3750 HSRP For Server Redundancy

Aug 14, 2012

I am facing a problem in implementing HSRP. My scenario is like this, I have two 3750 switches and I have a server with two NICs. I want to run HSRP in these two switches. By the way the server is connected directly with the switches. I mean each NIC to each switch.we have teamed the two NIC (Active / Standby).what configuration need to done in switches to work HSRP.

View 4 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved