11-21-2003 04:53 AM - edited 03-02-2019 11:53 AM
I need to connect 7513 to 7507 by 2*E1,I may the 2*e1 in a Multilink,and configure the Multilink to bridge-group,Interface Mutlilink can bundle ,I can Ping when the packets smaller than 1496Bytes ,when the Ping's packets begger than 1496(i.e.1500)Bytes ,then the Ping will timeout.
If the Multilink just have one E1,then they do well.
the 7513 config like that:
bridge cbr
bridge-group 1 protocol ieee
interface Multilink 1
ppp multilink
multilink-group 1
ppp multilink interleave
bridge-group 1
interface s8/1/3:0
en ppp
ppp multilink
multilink-group 1
interface s8/1/4:0
en ppp
ppp multillink
multilink-group 1
interface f4/0/1
bridge-group 1
And the 7507 just like that.
Anyone have some suggestions will very thanks .
11-27-2003 10:39 PM
If the packets bigger than 1496 bytes are being dropped, it should be a problem with MTU or fragmentation. Check if the DF bit is set and hence packets are dropped. Increasing the mtu should solve the problem.
11-30-2003 06:18 PM
Thank your reply.
I note when the PING TIMEOUT then the lost fragments will increase ,just like that:
sh pp multilink
Multilink1, bundle name is backup
Bundle up for 00:27:17
Bundle is Distributed
33 lost fragments, 1222 reordered, 0 unassigned
0 discarded, 0 lost received, 1/255 load
0x1F received sequence, 0x371 sent sequence
Member links: 2 active, 0 inactive (max not set, min not set)
Se8/1/4:0, since 00:28:07, no frags rcvd
Se8/1/3:0, since 00:01:00, no frags rcvd
The CISCO DE think that is a BUG,but i change the MTU(1498 or 1550)and the Symptoms persists ,the BUG is CSCed09364
.
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