From: Peng Zheng (zpnist@yahoo.com)
Date: Sat Oct 19 2002 - 23:27:48 GMT-3
Thanks for all reply.
--- Brian Dennis <brian@5g.net> wrote:
> Sure ;-) Frame-Relay end-to-end keepalives are a
> good point.
>
> Brian Dennis, CCIE #2210 (R&S/ISP Dial)
>
> -----Original Message-----
> From: Fabrice Bobes [mailto:study@6colabs.com]
> Sent: Saturday, October 19, 2002 4:30 PM
> To: 'Brian Dennis'; ccielab@groupstudy.com
> Subject: RE: Backup interface
>
> Brian,
>
> If I may:
>
> 5) Frame-Relay Subinterfaces - Shutdown the physical
> interface on the
> side without backup command configured.
> 6) Frame-Relay Subinterfaces with end-to-end
> keepalive - Shutdown the
> subinterface on the side without backup command
> configured
>
> Fabrice Bobes, CCIE #8609 (R&S only)
>
> -----Original Message-----
> From: Brian Dennis [mailto:brian@5g.net]
> Sent: Saturday, October 19, 2002 4:18 PM
> To: 'Fabrice Bobes'; ccielab@groupstudy.com
> Subject: RE: Backup interface
>
>
> Actually...
>
> 5) Frame-Relay Subinterfaces - Shutdown the physical
> interface on the
> side without backup command configured.
>
> Once the DLCI goes inactive the subinterface will go
> into the down
> state. Of course if it is a multipoint subinterface
> and has more than
> one DLCI then all the DLCIs would have to go
> inactive.
>
> Brian Dennis, CCIE #2210 (R&S/ISP Dial)
>
> -----Original Message-----
> From: Fabrice Bobes [mailto:study@6colabs.com]
> Sent: Saturday, October 19, 2002 3:41 PM
> To: 'Brian Dennis'; ccielab@groupstudy.com
> Subject: RE: Backup interface
>
> Hmm, not sure that point 5) would work. I will check
> it. Shouldn't it
> be?
>
> 5) Frame-Relay Subinterfaces with end-to-end
> keepalive - Shutdown the
> subinterface on the side without backup command
> configured
>
> Fabrice
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of
> Brian Dennis
> Sent: Saturday, October 19, 2002 3:11 PM
> To: 'Peng Zheng'; ccielab@groupstudy.com
> Subject: RE: Backup interface
>
>
> Backup Interface Command Caveat:
> When an interface (i.e. serial) is configured for
> backup and the
> interface is administratively shutdown, the 'backup
> interface' (i.e.
> BRI) will not come out of the standby state. To test
> the backup
> interface command use one of the methods listed
> below:
>
> 1) Disconnect cable.
> 2) HDLC or PPP - Shutdown the side of the link that
> does not have the
> backup interface command configured.
> 3) HDLC or PPP - Change the encapsulation on only
> one side to create an
> encapsulation mismatch.
> 4) Frame-Relay Physical Interfaces - Shutdown the
> interface on
> Frame-Relay switch that is connected to the router
> with the backup
> interface command configured.
> 5) Frame-Relay Subinterfaces - Shutdown the
> subinterface on the side
> without backup command configured.
>
> Brian Dennis, CCIE #2210 (R&S/ISP Dial)
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of
> Peng Zheng
> Sent: Saturday, October 19, 2002 1:32 PM
> To: ccielab@groupstudy.com
> Subject: Backup interface
>
> I connect two 2520 though Serial and ISDN,
>
> R1(s3)---------------(s1)R2
> |(bri0) |(bri0)
> |______________________|
>
> I use crossover cable to connect serial port. R1 is
> DCE, R2 is DTE.
>
> Configuration on R1:
>
> interface Serial3
> ip address 192.168.100.1 255.255.255.0
> no ip route-cache
> no ip mroute-cache
> clockrate 64000
> !
> interface BRI0
> ip address 192.168.200.1 255.255.255.0
> encapsulation ppp
> no ip route-cache
> no ip mroute-cache
> dialer idle-timeout 180
> dialer map ip 192.168.200.2 name R2 broadcast
> 4082222222
> dialer load-threshold 1 either
> dialer-group 1
> isdn switch-type basic-ni
> isdn spid1 40811111111 4081111111
> isdn spid2 40811111112 4081111111
> ppp authentication chap
> ppp multilink
>
> On R2:
>
> interface Serial1
>
> ip address 192.168.100.2 255.255.255.0
> no ip route-cache
> no ip mroute-cache
>
>
> !
> interface BRI0
> ip address 192.168.200.2 255.255.255.0
> encapsulation ppp
> no ip route-cache
> no ip mroute-cache
> dialer idle-timeout 180
> dialer map ip 192.168.200.1 name R1 broadcast
> 4081111111
> dialer load-threshold 1 either
> dialer-group 1
> isdn switch-type basic-ni
> isdn spid1 40822222221 4082222222
> isdn spid2 40822222222 4082222222
> ppp authentication chap
> ppp multilink
>
>
> I can ping each other through both link.
>
> Then I added backup interface bri 0 under s1 of R2.
>
> Then I got:
>
> R2# sh isdn stat
> Global ISDN Switchtype = basic-ni
> ISDN BRI0 interface
> dsl 0, interface ISDN Switchtype = basic-ni
> Layer 1 Status:
> DEACTIVATED
> Layer 2 Status:
> Layer 2 NOT Activated
> TEI Not Assigned, ces = 1, state =
> 1(terminal
> down)
> spid1 configured, spid1 NOT sent, spid1
> NOT valid
> TEI Not Assigned, ces = 2, state = 5(init)
> spid2 configured, spid2 NOT sent, spid2
> NOT valid
> Layer 3 Status:
> 0 Active Layer 3 Call(s)
> Active dsl 0 CCBs = 0
> The Free Channel Mask: 0x80000003
> Total Allocated ISDN CCBs = 0
>
> When I shutdown the s1 of R2, nothing happened.
>
> What's the problem?
>
>
=== message truncated ===
This archive was generated by hypermail 2.1.4 : Tue Nov 05 2002 - 08:35:52 GMT-3