From: Alexey (Alexey.Yefremenko@incom.kiev.ua)
Date: Mon Aug 08 2005 - 07:19:33 GMT-3
Hi,
It should work if you use ppp reliable-link on both sides and enable
'compress predictor'. I already wrote about it in my previous post. You can
see it below. But, I do not understand why we have to use compression,
because of in DocCD it is not required.
You can check if reliable link is ok by entering sh int bri 0/0:1 (as I
remember).
I found cause of this problem:
Than you use 'ppp reliable-link' you must use compression 'compress
predictor'. But in documentation you can read:
http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps1835/products_conf
iguration_guide_chapter09186a00800ca724.html
Although LAPB protocol overhead consumes some bandwidth, you can offset that
consumption by the use of PPP compression over the reliable link. PPP
compression is separately configurable and is not required for use of a
reliable link.
--- Best regards, Alexey Yefremenko> -----Original Message----- > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of > eFREMENKO aLEKSEJ > Sent: Friday, July 29, 2005 11:59 AM > To: ccielab@groupstudy.com > Subject: ppp reliable-link quesion > > I use simple configuration ppp via BRI with callback capability. All works > fine until I add 'ppp reliable-link' command. > > When I try to ping remote end of ISDN connection, interface will come up > but packets is not going though. Routing is not a problem. I see it via > 'deb ip packet detail'. Reliable link is successfully negotiated via ppp. > Is any ideas on how to solve this? > > > Please see my configuration bellow: > > R2 -> CallBack Client > > ! > interface BRI0/0 > ip address 216.30.25.2 255.255.255.224 > encapsulation ppp > dialer idle-timeout 300 > dialer map ip 216.30.25.5 name R5 broadcast 9025001 > dialer-group 1 > isdn switch-type basic-net3 > isdn point-to-point-setup > ppp reliable-link > ppp callback request > ppp authentication pap > ppp pap sent-username R2 password 0 ipexpert > ! > dialer-list 1 protocol ip permit > ! > > R5 -> CallBack Server > > ! > interface BRI0/0 > ip address 216.30.25.5 255.255.255.224 > encapsulation ppp > dialer idle-timeout 300 > dialer map ip 216.30.25.2 name R2 class callback broadcast 9015001 > dialer callback-secure > dialer-group 1 > isdn switch-type basic-net3 > ppp reliable-link > ppp callback accept > ppp authentication pap > ppp pap sent-username R5 password 0 ipexpert > ! > map-class dialer callback > dialer callback-server username > dialer-list 1 protocol ip permit > ! > > > R2#ping 216.30.25.5 > > Type escape sequence to abort. > Sending 5, 100-byte ICMP Echos to 216.30.25.5, timeout is 2 seconds: > > *Mar 1 20:28:39.266: IP: tableid=0, s=216.30.25.2 (local), d=216.30.25.5 > (BRI0/0), routed via RIB > *Mar 1 20:28:39.266: IP: s=216.30.25.2 (local), d=216.30.25.5 (BRI0/0), > len 100, sending > *Mar 1 20:28:39.266: ICMP type=8, code=0. > *Mar 1 20:28:41.266: IP: tableid=0, s=216.30.25.2 (local), d=216.30.25.5 > (BRI0/0), routed via RIB > *Mar 1 20:28:41.266: IP: s=216.30.25.2 (local), d=216.30.25.5 (BRI0/0), > len 100, sending > Success rate is 0 percent (0/5) > R2#sh isdn ac > R2#sh isdn active > -------------------------------------------------------------------------- > ------ > ISDN ACTIVE CALLS > -------------------------------------------------------------------------- > ------ > Call Calling Called Remote Seconds Seconds Seconds Charges > Type Number Number Name Used Left Idle > Units/Currency > -------------------------------------------------------------------------- > -- > In ---N/A--- 9015001 R5 24 292 7 > -------------------------------------------------------------------------- > -- > > > --- > Alexey
--- Best regards, Alexey Yefremenko
> -----Original Message----- > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of > gladston@br.ibm.com > Sent: Saturday, August 06, 2005 12:26 AM > To: ccielab@groupstudy.com > Subject: Checking reliable-link > > Hi, > > Is there a way to test if reliable link is ok? > > This is the only message I get, from debug ppp negotiation: > > *Mar 1 20:45:48: BR3/0:1 LCP: ReliableLink window 7 addr 0 > (0x0B040700) > > This is the config: > > interface Dialer25 > ip address 148.5.24.2 255.255.255.0 > encapsulation ppp > dialer pool 25 > dialer remote-name Rack2R4 > dialer idle-timeout 10 > dialer string 8358662 > dialer-group 1 > compress stac > no cdp enable > ppp reliable-link > ppp authentication chap > ppp multilink > ppp multilink links minimum 2 mandatory > > It is configure just on this site. Remote site has this: > > interface Dialer25 > ip address 148.5.24.4 255.255.255.0 > encapsulation ppp > dialer pool 25 > dialer remote-name Rack2R2 > dialer idle-timeout 0 > dialer string 8358661 > dialer-group 1 > compress stac > no cdp enable > ppp authentication chap > ppp multilink > > If I configure 'reliable-link' on both sides, connectivity does not > occurs. > > And there is this note on Cisco doc: > > =================== > Restrictions > PPP reliable link does not work with Multilink PPP. > > PPP reliable link is not available on asynchronous serial interfaces, > including ISDN BRI and ISDN PRI interfaces > ================= > > Do you have experience with reliable link to confirm it? > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html
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