You don't need to specify the 'soft-reconfiguration' under the bgp neighbor but I believe you still should do a
clear ip bgp nei <ip> soft in|out or clear ip bgp nei <ASN> soft in|out Kenny On Thu, Apr 1, 2010 at 11:45 AM, Dan Goldberg <[email protected]> wrote: > > I left out a detail that may be important: > This is on an MPLS WAN where I control all the CEs. The PEs are all > provider controlled. > The "hubs" I mentioned are just larger CEs with a broader BGP policy > permitting all my AS numbers. So each routers neighbor is not under my > control. > > Thanks again. > Dan > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Dan Goldberg > Sent: Thursday, April 01, 2010 1:10 PM > To: [email protected] > Subject: [c-nsp] BGP as-path access list question on 1841 routers > > Hi there, > I have what is probably a very simple BGP question which I wanted to ask. > The short version is how to refresh/reread an existing BGP as-path > access-list (with new permits added) without rebooting the router? > > The long version: > I run primarily IOS Version 12.4(15)T9 on 1841s with EBGP configured > largely as follows. I have roughly 100 sites like this. For the most part > all sites have connectivity to 2 "hubs", a NOC and an alternative (BCP) NOC. > Tail sites are not supposed to be able to reach each other or even know > about each other (through BGP) in most cases. That is what the as-path > access list provides. > > There are some cases where there are groups of ASes that I want to allow > BGP to learn about each other. These relationships are built sometimes > arbitrarily. > > <all numbers are faked> > router bgp 65534 > network blah mask 255.255.255.255 > neighbor www.xxx.yyy.zzz remote-as 65533 > neighbor www.xxx.yyy.zzz filter-list 1 in > ! > ip as-path access-list 1 permit 64542 > ip as-path access-list 1 permit 64543 > > I have found that if I start with the above as-path filter and then add a > new permit to the filter as below: > ip as-path access-list 1 permit 64551 > > #sho ip bgp neighbors shows: > Neighbor capabilities: > Route refresh: advertised and received(old & new) > > The question (finally): > Can I use a soft restart to re-read the as-path access-list? > Do I need to add a "neighbor soft-reconfiguration" statement to BGP first? > Is there another method to force a reread of the filter-list without losing > connectivity to the router? > > Thanks I appreciate your feedback. > > -- > Dan Goldberg > <title removed due to other thread> > Video Gaming Technologies, Inc. > 434-992-5450 > > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
