Flex backup interface

hey I have cisco 2960 switch I want to ask about flex backup interface configuration on it my ask is that the STP would remove from whole switch or in the interface only !!

Setup your router interface cards such that the interface w/"physical-layer async" comes before the interface it will be used to back up. It will then get initialized before the "backup interface" command.
Implementing dial-on-demand routing (DDR) backup on a router that uses
Network Address Translation (NAT) involves more configuration than is
neccessary for regular DDR backup. This is because the router must translate packets to and from the "inside" network using different "outside" addresses depending on whether the primary or backup link is active." ... "Make sure that your Internet Service Provider (ISP) can provide you with two different IP addresses or subnets. Use one IP address or subnet for the DSL connection and the other for the backup ISDN connection. IP addresses on the two dialer interfaces need to be explicitly assigned and cannot be negotiated during PPP negotiation. This means that the ip address negotiated command is not permitted under the dialer interfaces.
For troubleshooting the 1706 router click this link.
http://www.cisco.com/en/US/products/hw/routers/ps221/prod_tech_notes_list.html

Similar Messages

Flex User Interfaces

I'm new to Flex. I've seen some great apps with great user
interfaces done in it. I have this question:
Is there ANYWHERE that helps one think about appropriately
laying out the Flex user interface? A book, a PDF, a style guide,
etc.? This would include, particularly, when to use container type
X vs container type Y, etc. Even a description of the best use of
all the containers and controls would be useful.

Katie, I see what you mean, something in this vein but for
Flex:
Apple Human Interface Styleguide
http://developer.apple.com/documentation/UserExperience/Conceptual/OSXHIGuidelines/OSXHIGu idelines.pdf
Let's ask guys at Adobe and Adobe Consulting to write such a
document.

Loopback0 vs. "Backup interface GigabitEthernetx/x" for redundance

Hi,
I am a voice engineer. To configure MGCP gateways I have used the Cisco standard method of creating a loopback interface specially when there are redundant switch connections, e.g. GigabitEthernet0/0 and GigabitEthernet0/0. Can anybody please explain if I use "backup interface" method, would it work same way. The backup interface method also has a backup delay, not sure what is default, but secondary interface won't be active until the delay elapses. If I configure "no backup delay" would there still be an event for MGCP? Can somebody please share their experience?

If your primary interface fails, is there an event for MGCP? What happens to active calls?
Update: I just found that the default delay is 0 seconds (that means "no backup delay" is not required to be explicitly added, so I assume the MGCP gateway should not experience any impact at all. If you done this testing in your environment, please confirm.
And thanks a lot for quick reply!

How to check backup interface

I want to rsh to all my machines,
1. check if the backup interface is up if it is not bring it up. The problem is backup interface is named differently on every machines ie. eth1, bge1 etc.
2. check if the back up netmask and IP is setup properly if not set it up
How can I achieve this using a script?
Thanks ever so much for your help.

I am not able to do that. Do you have any suggestions on how i can achieve the above? Thanks

Cisco BackUp Interface Operation Failing

OK Experts,
I have made this issue very simple for you guys to help me out.
I have two routers R22 and R23. I have configured the back up interface on R22 to be interface fas 0/1. Everything appears to be working fine. I issue the command show backup and I get the following on R22
r22#show backup
Primary Interface   Secondary Interface   Status
FastEthernet0/0     FastEthernet0/1       normal operation
r22#
Also I get the following:
FastEthernet0/1            10.10.13.2      YES manual standby mode          down
However, when I shutdown interface fast 0/0 to test the back up interface fast 0/1 I get the following:
r22#show backup
Primary Interface   Secondary Interface   Status
FastEthernet0/0     FastEthernet0/1       disabled
r22#
FastEthernet0/1            10.10.13.2      YES manual standby mode/disabled down
So it doesn't work.
Attached are the configs.
I was wondering if someone could help me figure out why this won't work.
Cheers

Hello Carlton,
there are some notes about your tests:
a) the configuration of the primary interface includes two logical interfaces main interface and a vlan based subinterfaces both fail when you disable fas0/0, the secondary interface has only IP configuration at main interface level
from your log files:
interface FastEthernet0/0
backup interface FastEthernet0/1
ip address 10.10.14.2 255.255.255.0
duplex auto
speed auto
interface FastEthernet0/0.1
encapsulation dot1Q 12
ip address 10.10.12.2 255.255.255.0
You should remove the subinterface fas0/0.1 as a minimum to make interface configurations compatible,
b) the specific type of interface you would like to use for backup is LAN based Fastethernet.
The backup command had been introduced for providing a backup interface for serial interface and the secondary interface may be a serial interface or ISDN based ( in this case a DDR call is triggered over ISDN).
The dial backup command reference says that support for gigabit interfaces in C7600 has been later introduced.
see
http://www.cisco.com/en/US/docs/ios/dial/command/reference/dia_a1.html#wp1012054
The use of backup command may be supported or not for fastethernet interface on your routers.
If it is not supported, you can easily implement an alternate solution, because you are running OSPF in area 0 in all router interfaces
router ospf 1
log-adjacency-changes
>>network 0.0.0.0 255.255.255.255 area 0
So all you need to do is to increase OSPF cost on fas0/1 to create a backup path
on R22, R23:
conf t
interface fas0/1
ip ospf cost 50
Hope to help
Giuseppe

Backup interface on fiber ring

We recently installed a 100Meg MPLS fiber ring into our office, and we were given redundant connections (north loop and south loop).
The North loop is the primary interface, and will be used unless the fiber is cut.
I need to configure our router to automatically switch to the south loop in the event that the north loop goes down.
Here is the config I have so far, I just want to make sure I'm not missing anything.
interface GigabitEthernet0/0/0
description 100MB MPLS North Loop
backup delay 30 never
backup interface GigabitEthernet0/0/1
ip address X.X.X.X 255.255.255.252
media-type sfp
negotiation auto
interface GigabitEthernet0/0/1
description 100MB MPLS backup South Loop
ip address X.X.X.X 255.255.255.252
media-type sfp
negotiation auto
Am I correct in thinking that, should the North loop on Gi0/0/0 go down, it will automatically switch to Gi0/0/1 after 30 seconds of down time?
If so, how do I go about switching back to the north loop when it comes back online?

Hi,
I have see this feature configure on few ISP. For this feature to work, interface needs to go down then only RP can send UP event to standby link and make it up.
You can also go through below discussion on backup interface
https://supportforums.cisco.com/discussion/10921951/how-set-backup-delay-serial-interface-ethernet-interface
regarding backup delay , i am not sure why you want to put delay of 30 sec before standby interface becomes active and then deactivating delay is infinite, means it will always remain active even when primary interface comes up.
CCO document on backup delay
http://www.cisco.com/c/en/us/td/docs/ios/dial/command/reference/dia-cr-book/dia_a1.html#wp1011975
backup delay
To define how much time should elapse before a secondary line status changes after a primary line status has changed, use the backup delaycommand in interface configuration mode. To return to the default so that as soon as the primary fails, the secondary is immediately brought up without delay, use the no form of this command.
backup delay {enable-delay-period | never} {disable-delay-period | never}
no backup delay {enable-delay-period | never} {disable-delay-period | never}
Syntax Description
enable-delay-period
Number of seconds that elapse after the primary line goes down before the Cisco IOS software activates the secondary line.
disable-delay-period
Number of seconds that elapse after the primary line comes up before the Cisco IOS software deactivates the secondary line.
never
Secondary line is never activated or deactivated.
--Pls rate helpful posts--
Regards,
Akash

ASA 5505 backup interface

Hello,
I have setup ASA 5505 with 2 ISP, named outside (primary) and backup, the scenario is if outside down, then backup will take over, it works now.
But it is not working when the primary connection cannot reach the gateway with the interface still up.
Is it possible when the primary connection cannot reach the gateway then backup automatically take over?
Thanks before..
My configuration is:
ASA Version 8.2(1)
hostname cisco
domain-name default_domain
enable password ********* encrypted
passwd ********* encrypted
names
interface Vlan1
nameif inside
security-level 100
ip address 192.168.1.254 255.255.255.0
interface Vlan2
nameif outside
security-level 0
ip address 172.10.10.10 255.255.255.0
interface Vlan3
no forward interface Vlan2
nameif backup
security-level 0
ip address 172.20.10.10 255.255.255.0
interface Ethernet0/0
switchport access vlan 1
interface Ethernet0/1
switchport access vlan 2
interface Ethernet0/2
switchport access vlan 3
interface Ethernet0/3
interface Ethernet0/4
interface Ethernet0/5
interface Ethernet0/6
interface Ethernet0/7
ftp mode passive
dns server-group DefaultDNS
domain-name default domain
same-security-traffic permit intra-interface
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu backup 1500
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
global (inside) 1 interface
global (outside) 1 interface
global (backup) 1 interface
nat (inside) 1 192.168.1.0 255.255.255.0
access-group inside_out in interface inside
access-group outside_in in interface outside
access-group backup_in in interface backup
route outside 0.0.0.0 0.0.0.0 172.10.10.1 1
route backup 0.0.0.0 0.0.0.0 172.20.10.1 254
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
telnet 192.168.1.0 255.255.255.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd lease 1048575
dhcpd auto_config outside
dhcpd address 192.168.1.100-192.168.1.200 inside
dhcpd dns 8.8.8.8 8.8.4.4 interface inside
dhcpd enable inside
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
class-map inspection_default
match default-inspection-traffic
policy-map global_policy
class inspection_default
inspect icmp
service-policy global_policy global
prompt hostname context
Cryptochecksum:24af050f332deab3e38eb578f8081d05
: end

Hi Amrin,
you can configure SLA monitoring on ASA and that woudl work fine for you:
http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00806e880b.shtml
Hope that helps.
Thanks,
Varun

Cisco ASA 5510 Backup Interface configuration

Hi Experts,
I am a newbie with Cisco Firewalls, pls help.
We have a BSNL Leased Line of 2MBPS with few Static IP's of Which 2 IP's are configured in Firewall 1 For the Outside Interface and one for publishing the DMZ server. Most of the times due to some reasons or the other the BSNL line is going down. so now I need to configure one another TATA Broadband 1MBPS Dialup Line as a Backup for the BSNL Line so as to provide a uninterupted Internet to our users.
Pls guide me the Steps
Thank in Advance.
Anish N

Hi Anish,
Check the below mentioned link for configuration.
http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00806e880b.shtml

Performing backup of SQL via backup interface

Hello all,
First of all , let me tell you that i don't have much knowledge regarding SQL so, excuse me in advance for any stupid questions.
Here is my situation:
I have SQL 2005 Standolne server. On the server there are two interfaces(NICs) one is so called production(prod) and backup(bkp).
The PROD is for main communication and it's with assigned FQDN - XYZ. The other one is for backup traffic and it's with FQDN - XYZ-b. The IPs are , PROD - xxx.xxx.1.xxx, BKP - xxx.xxx.2.xxx
I'm using a HP Data Protector software , version 7.03, with latest patched installed on the backup software.
Unfortunately when i'm trying to create a backup(there are 3 ways for authentication - Integrated, Windows and SQL server) with the BKP interface i receive following error:
*RETVAL*8010
The user name which is used by the bkp software is added into the SQL server as admin, also it's with local admin from OS point of view.
So my question is , are there any way to perform backup via XYZ-B interface ?
Thank you in advance !!!

Hello,
Seems to be more a HP Data Protector issue, see
http://h30499.www3.hp.com/t5/Data-Protector-Support-and-News/Integration-cannot-be-configured-error-on-HP-data-protector/td-p/5961279#.U89zyGeKD5w
Olaf Helper
[ Blog] [ Xing] [ MVP]

CSS11501 - Unable to Telnet to VRRP backup interface IP

Hi,
I have 2 units of Cisco CSS11501 which configured running on VRRP active/standby on 2 different VLAN (Circuit). When unit 1 is master unit, I am able to telnet to its circuit IP address, but unable to telnet to any circuit IP of backup unit.
Active unit configuration:
!************************** CIRCUIT **************************
circuit VLAN145
ip address 172.19.145.182 255.255.255.0
    ip virtual-router 1 priority 101
    ip redundant-vip 1 172.19.145.184
    ip redundant-interface 1 172.19.145.183
circuit VLAN550
ip address 192.168.50.18 255.255.255.0
    ip virtual-router 2 priority 101
    ip redundant-vip 2 192.168.50.20
    ip redundant-interface 2 192.168.50.19
!*************************** OWNER ***************************
owner ***
content ***
    vip address 172.19.145.184
    port 80
    protocol tcp
    add service ***
    active
!*************************** GROUP ***************************
group ***
vip address 192.168.50.20
active
Backup unit configuration:
!************************** CIRCUIT **************************
circuit VLAN145
ip address 172.19.145.183 255.255.255.0
    ip virtual-router 1 priority 90
    ip redundant-interface 1 172.19.145.182
    ip redundant-vip 1 172.19.145.184
circuit VLAN550
ip address 192.168.50.19 255.255.255.0
    ip virtual-router 2 priority 90
    ip redundant-vip 2 192.168.50.20
    ip redundant-interface 2 192.168.50.18
!*************************** OWNER ***************************
owner ***
content ***
    vip address 172.19.145.184
    port 80
    protocol tcp
    add service ***
    active
!*************************** GROUP ***************************
group ***
vip address 192.168.50.20
active
Please help!!
Regards,
Danny Lim

Hi Marko,
That means I could not to configure redundant-interface as I have redundant-vip configured already?
Actually the topology is:
VLAN550 is connecting to server farm
VLAN145 is where user sitting
my current config :
circuit VLAN145
ip address 172.19.145.182 255.255.255.0
    ip virtual-router 1 priority 101
    ip redundant-vip 1 172.19.145.184
    ip redundant-interface 1 172.19.145.183
    ip critical-service 1 PING_DEFAULT_GATEWAY
circuit VLAN550
ip address 192.168.50.18 255.255.255.0
    ip virtual-router 2 priority 101
    ip redundant-vip 2 192.168.50.20
    ip redundant-interface 2 192.168.50.19
    ip critical-service 2 PING_DEFAULT_GATEWAY
!*************************** OWNER ***************************
owner HLRLDAP
content VIP_LDAP_16611
    vip address 172.19.145.184
    port 16611
    protocol tcp
    add service KPG-HV30-3
    add service KPG-HV30-6
    active
!*************************** GROUP ***************************
group Redundant_Server
vip address 192.168.50.20
active
So, I should have change my config like this:
CSS1
circuit VLAN145
ip address 172.19.145.182 255.255.255.0
    ip virtual-router 1 priority 101
    ip redundant-vip 1 172.19.145.184
    ip redundant-interface 1 172.19.145.181
    ip critical-service 1 PING_DEFAULT_GATEWAY
circuit VLAN550
ip address 192.168.50.18 255.255.255.0
    ip virtual-router 2 priority 101
    ip redundant-interface 2 192.168.50.20
    ip critical-service 2 PING_DEFAULT_GATEWAY
CSS2
!************************** CIRCUIT **************************
circuit VLAN145
ip address 172.19.145.183 255.255.255.0
    ip virtual-router 1 priority 90
    ip redundant-interface 1 172.19.145.181
    ip redundant-vip 1 172.19.145.184
    ip critical-service 1 PING_DEFAULT_GATEWAY
circuit VLAN550
ip address 192.168.50.19 255.255.255.0
    ip virtual-router 2 priority 90
    ip redundant-interface 2 192.168.50.20
    ip critical-service 2 PING_DEFAULT_GATEWAY

Incremental Backups Interface Problem???

Maybe it's just me, but doing a simple task like backing up (full / incremental) should be very simple, and I'm having a problem. I should be able to select a backup location (a preference), do a Full backup, then do an Incremental...as many as I want...and at some time I may want to do a Full backup again. But it seems it's much more complex than that...
Here's what I'm doing (obviously wrong):
I've done a Full backup on Drive D in some directory, say 'My Backup'. Fine, I think I have a Full backup.
Now later, I want to do an incremental, and I'm prompted to select a destination Drive (it's D), and then "chose browse to load your previous backup file."
OK, I browse to my D | My Backup directory (that's the previous and ONLY backup location), but I'm warned that a backup file already exists, and do I want to overwrite it. Huh???
An Incremental doesn't overwrite a Full Backup. What am I supposed to Browse to?
And what does "Load previous backup file to determine size" have anything to do with a simple need to create an incremental backup file?
Help hasn't helped. I'm missing something.
I'd really appreciate if anyone can tell me what I'm doing wrong. I obviously don't want to overwrite a Full backup with an Incremental.

See excellent answer in Technical side of the forum
Michael Sobieski, "Problem with Full - Incremental Backup in 5.0" #1, 19 Oct 2006 8:21 am

Backup interface command

if i use this command do I need to include a route for that interface ? how does it exactly work ?

hi carl,,,
i dont think u need more configuration for that...
here u just need to configure bri...and need to publish that ip address in to your routing protocol...
u can have clear picture by this link
http://www.cisco.com/en/US/tech/tk801/tk379/technologies_configuration_example09186a00800b1148.shtml
just readit it will clear you whole fundamental...
rate this post if it helps
regards
Devang

ISDN Backup Interface

Hello People,
                         I am facing a issue with my ISDN Connection, when I check the ISDN status below is the output
Global ISDN Switchtype = basic-net3
ISDN BRI1/0 interface
        dsl 16, interface ISDN Switchtype = basic-net3
    Layer 1 Status:
        DEACTIVATED
    Layer 2 Status:
        Layer 2 NOT Activated
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 16 CCBs = 0
    The Free Channel Mask: 0x80000003
ISDN BRI1/1 interface
        dsl 17, interface ISDN Switchtype = basic-net3
    Layer 1 Status:
        DEACTIVATED
    Layer 2 Status:
        Layer 2 NOT Activated
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 17 CCBs = 0
    The Free Channel Mask: 0x80000003
ISDN BRI1/2 interface
        dsl 18, interface ISDN Switchtype = basic-net3
    Layer 1 Status:
        DEACTIVATED
    Layer 2 Status:
        Layer 2 NOT Activated
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 18 CCBs = 0
    The Free Channel Mask: 0x80000003
ISDN BRI1/3 interface
        dsl 19, interface ISDN Switchtype = basic-net3
    Layer 1 Status:
        DEACTIVATED
    Layer 2 Status:
        Layer 2 NOT Activated
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 19 CCBs = 0
    The Free Channel Mask: 0x80000003
    Total Allocated ISDN CCBs = 0
Then once I clear the interfaces 2 of the 4 bri becomes active with Frame esatblishment, but that is also temporary, it will become deactivated after sometime, what is the cause for this problem, is ther any way to overcome it???, thanks in advance
Regards
Krishna

Udupi Krishna wrote:Hello People,                         I am facing a issue with my ISDN Connection, when I check the ISDN status below is the outputGlobal ISDN Switchtype = basic-net3ISDN BRI1/0 interface        dsl 16, interface ISDN Switchtype = basic-net3    Layer 1 Status:        DEACTIVATED    Layer 2 Status:        Layer 2 NOT Activated    Layer 3 Status:        0 Active Layer 3 Call(s)    Active dsl 16 CCBs = 0    The Free Channel Mask: 0x80000003ISDN BRI1/1 interface        dsl 17, interface ISDN Switchtype = basic-net3    Layer 1 Status:        DEACTIVATED    Layer 2 Status:        Layer 2 NOT Activated    Layer 3 Status:        0 Active Layer 3 Call(s)    Active dsl 17 CCBs = 0    The Free Channel Mask: 0x80000003ISDN BRI1/2 interface        dsl 18, interface ISDN Switchtype = basic-net3    Layer 1 Status:        DEACTIVATED    Layer 2 Status:        Layer 2 NOT Activated    Layer 3 Status:        0 Active Layer 3 Call(s)    Active dsl 18 CCBs = 0    The Free Channel Mask: 0x80000003ISDN BRI1/3 interface        dsl 19, interface ISDN Switchtype = basic-net3    Layer 1 Status:        DEACTIVATED    Layer 2 Status:        Layer 2 NOT Activated    Layer 3 Status:        0 Active Layer 3 Call(s)    Active dsl 19 CCBs = 0    The Free Channel Mask: 0x80000003    Total Allocated ISDN CCBs = 0Then once I clear the interfaces 2 of the 4 bri becomes active with Frame esatblishment, but that is also temporary, it will become deactivated after sometime, what is the cause for this problem, is ther any way to overcome it???, thanks in advanceRegardsKrishna
Do you have the correct ISDN switch type configured?
Basic-Net3 covers only a couple of countries in Europe and also New Zealand. I don't know where you are, but have you verified which type you need configured?
See the following URL for information on switch types.
http://www.cisco.com/en/US/docs/ios/11_3/feature/guide/natisdn.html#wp4291
Cheers.

Actively use Backup interface/Backup ISP

I have 5 IP addresses on my back up interface. I would like to test using remote desktop through my back up interface. I set up the security TCP 3389 and the NAT to the box I want test. But I think my routing is going back out my outside interface. I do not have a test box so I am not sure I want to start testing established routing. Can you give me an example.
I am using asa5520 version 7.2(3).

Use the following link here you will get example for ASA.
http://www.cisco.com/en/US/products/ps6120/prod_configuration_examples_list.html

Flex Links

Hello,
I want to implement a backup link between switches without enabling STP. I'm looking for something similar to Flex Links, but, to use Flex Links, the 2960 switch must be running the LAN Base Image, and the switches that I want to configure are running the LAN Lite Image.
Do you know something similar to Flex Links that I can use with Catalyst 2960 Lan Lite image switches?
Thanks in advance.

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A simple example of flexlink is:
Switch# configure terminal
Switch(conf)# interface gigabitethernet0/1
Switch(conf-if)# switchport backup interface gigabitethernet0/2
Switch(conf-if)# end
In this case, when the gigabitethernet01 (the active link) goes down, the gigabitethernet0/2 will forward traffic.
But, when the active link goes up again, it will not preempt the backup link (the backup link will forward traffic until it fails).
To avoid this, You can configure preemption:
Switch# configure terminal
Switch(conf)# interface gigabitethernet0/1
Switch(conf-if)#switchport backup interface gigabitethernet0/2 preemption mode forced
Switch(conf-if)#switchport backup interface gigabitethernet0/2 preemption delay 50
Switch(conf-if)# end
For more information, you can access this link:
http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_52_se/configuration/guide/swflink.html#wp1057556
Best regards,
César.

Flex backup interface

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